The hydrogen-bonded organic frameworks(HOFs)as a new type of porous framework materials have been widely studied in various areas.However,the lack of appropriate active sites,low intrinsic conductivity,and poor stabil...The hydrogen-bonded organic frameworks(HOFs)as a new type of porous framework materials have been widely studied in various areas.However,the lack of appropriate active sites,low intrinsic conductivity,and poor stability limited their performance in the field of electrocatalysis.Herein,we designed two 2D metal hydrogen-bonded organic frameworks(2D–M–HOF,M=Cu^(2+)or Ni^(2+))with coordination compounds based on 2,3,6,7,14,15-hexahydroxyl cyclotricatechylene and transition metal ions(Cu^(2+)and Ni^(2+)),respectively.The crystal structure of 2D–Cu–HOF is determined by continuous rotation electron diffraction,indicating an undulated 2D hydrogen-bond network with interlayeredπ-πstacking.The flexible structure of 2D–M–HOF leads to the formation of self-adaption interlayered sites,resulting in superior activity and selectivity in the electrocatalytic conversion of CO_(2) to C_(2) products,achieving a total Faradaic efficiency exceeding 80%due to the high-efficiency C–C coupling.The experimental results and density functional calculations verify that the undulated 2D–M–HOF enables the energetically favorable formation of*OCCHO intermediate.This work provides a promising strategy for designing HOF catalysts in electrocatalysis and related processes.展开更多
The complex distribution of gas hydrate in sediments makes understanding the mechanical properties of hydrate-bearing sediments a challenging task.The mechanical behaviors of hydrate-bearing interlayered sediments are...The complex distribution of gas hydrate in sediments makes understanding the mechanical properties of hydrate-bearing sediments a challenging task.The mechanical behaviors of hydrate-bearing interlayered sediments are still poorly known.A series of triaxial shearing tests were conducted to investigate the strength parameters and deformation properties of methane hydrate-bearing interlayered sediments at the effective pressure of 1 MPa.The results indicate that the stress-strain curves of hydrate-bearing interlayered sediments are significantly different from that of hydrate-bearing sediments.The peak strength,Young's modulus,initial yielding modulus,and failure mode are deeply affected by the methane hydrate distribution.The failure behaviors and mechanism of strain softening and hardening patterns of the interlayered specimens are more complicated than those of the integrated specimens.This study compares the different mechanical behaviors between integrated and interlayered specimens containing gas hydrate,which can serve as a reference for the prediction and analysis of the deformation behaviors of natural gas hydrate reservoirs.展开更多
TC21 titanium alloy,as an important metal to fabricate the aircraft structural components,has attracted great attentions recently.A TC21 titanium alloy with widmanst?tten structure was isothermally compressed.Based on...TC21 titanium alloy,as an important metal to fabricate the aircraft structural components,has attracted great attentions recently.A TC21 titanium alloy with widmanst?tten structure was isothermally compressed.Based on the microstructure observation,the evolution of initialβgrain,Grain Boundaryαphase(α;),lamellar a and interlayeredβwas systematically investigated.The results showed that,with the increasing of height reduction,theα;underwent an evolution process from bending/kinking to breaking inducing the corresponding blurring of initial coarse b grain outline.Meanwhile,a significant phase transformation from a to b took place at the terminations of brokenα;.The evolution of lamellarαand interlayeredβin the colony was closely related to their deformation compatibility.In the a colony,the interlayered b experienced a larger deformation amount than lamellarα.The higher distortion energy promoted the occurrence of Dynamic Recovery(DRV)and Dynamic Recrystallization(DRX)to generate many Low Angle Boundaries(LABs)and High Angle Boundaries(HABs)in interlayered b,which induced an apparent grain refinement of b phase.On the contrary,the lower distortion energy and low deformation temperature suppressed the occurrence of DRV/DRX and restrained the globularization of lamellarα.Furthermore,the microstructure observation clearly revealed that the shearing separation mechanism dominated the evolution of the a phase from lamellar to short bar-like morphology.展开更多
Al-pillared interlayered montmorillonite (Al-PILM) was prepared using the artificial Na-montmorillonite from the Qingfengshan bentonite mine as a starting material mixed with Al-pillaring solutions.The microstructure ...Al-pillared interlayered montmorillonite (Al-PILM) was prepared using the artificial Na-montmorillonite from the Qingfengshan bentonite mine as a starting material mixed with Al-pillaring solutions.The microstructure of the materials was studied by an X-ray powder diffractometer and a Fourier transform infrared (FTIR) spectrometer.The results indicated that the basal spacing [d(001) value] of the materials was increased significantly to 1.9194 nm relative to Na-montmorillonite (1.2182 nm).After calcined for 2 h at 300℃,the basal spacing was stabilized at 1.8394 nm and the layered structure of the materials was not destroyed.Thermal analysis was conducted by a thermal gravimetry and differential thermal analysis (TG-DTA) instrument,it showed that Al-PILM lost physically adsorbed water below 230.6℃ and water formed by dehydroxylation of the pillars at around 497.1℃, with a peak of the phase transformation at 903.0℃.展开更多
Protonic solid oxide electrolysis cells(P-SOECs)are a promising technology for water electrolysis to produce green hydrogen.However,there are still challenges related key materials and anode/electrolyte interface.P-SO...Protonic solid oxide electrolysis cells(P-SOECs)are a promising technology for water electrolysis to produce green hydrogen.However,there are still challenges related key materials and anode/electrolyte interface.P-SOECs with Zr-rich electrolyte,called Zr-rich side P-SOECs,possess high thermodynamically stability under high steam concentrations but the large reaction resistances and the current leakage,thus the inferior performances.In this study,an efficient functional interlayer Ba_(0.95)La_(0.05)Fe_(0.8)Zn_(0.2)O_(3-δ)(BLFZ)in-between the anode and the electrolyte is developed.The electrochemical performances of P-SOECs are greatly enhanced because the BLFZ can greatly increase the interface contact,boost anode reaction kinetics,and increase proton injection into electrolyte.As a result,the P-SOEC yields high current density of 0.83 A cm^(-2) at 600℃ in 1.3 Vamong all the reported Zr-rich side cells.This work not only offers an efficient functional interlayer for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability.展开更多
Interlayer is an important factor affecting the distribution of remaining oil.Accurate identification of interlayer distribution is of great significance in guiding oilfield production and development.However,the trad...Interlayer is an important factor affecting the distribution of remaining oil.Accurate identification of interlayer distribution is of great significance in guiding oilfield production and development.However,the traditional method of identifying interlayers has some limitations:(1)Due to the existence of overlaps in the cross plot for different categories of interlayers,it is difficult to establish a determined model to classify the type of interlayer;(2)Traditional identification methods only use two or three logging curves to identify the types of interlayers,making it difficult to fully utilize the information of the logging curves,the recognition accuracy will be greatly reduced;(3)For a large number of complex logging data,interlayer identification is time-consuming and laborintensive.Based on the existing well area data such as logging data and core data,this paper uses machine learning method to quantitatively identify the interlayers in the single well layer of CIII sandstone group in the M oilfield.Through the comparison of various classifiers,it is found that the decision tree method has the best applicability and the highest accuracy in the study area.Based on single well identification of interlayers,the continuity of well interval interlayers in the study area is analyzed according to the horizontal well.Finally,the influence of the continuity of interlayers on the distribution of remaining oil is verified by the spatial distribution characteristics of interlayers combined with the production situation of the M oilfield.展开更多
A functional interlayer based on two-dimensional(2D)porous modified vermiculite nanosheets(PVS)was obtained by acid-etching vermiculite nanosheets.The as-obtained 2D porous nanosheets exhibited a high specific surface...A functional interlayer based on two-dimensional(2D)porous modified vermiculite nanosheets(PVS)was obtained by acid-etching vermiculite nanosheets.The as-obtained 2D porous nanosheets exhibited a high specific surface area of 427 m^(2)·g^(-1)and rich surface active sites,which help restrain polysulfides(LiPSs)through good physi-cal and chemical adsorption,while simultaneously accelerating the nucleation and dissolution kinetics of Li_(2)S,effec-tively suppressing the shuttle effect.The assembled lithium-sulfur batteries(LSBs)employing the PVS-based inter-layer delivered a high initial discharge capacity of 1386 mAh·g^(-1)at 0.1C(167.5 mAh·g^(-1)),long-term cycling stabil-ity,and good rate property.展开更多
Due to its unique layered structure and excellent electrochemical properties,molybdenum disulfide(MoS_(2))demonstrates significant potential for applications in the energy storage field,particularly in supercapacitors...Due to its unique layered structure and excellent electrochemical properties,molybdenum disulfide(MoS_(2))demonstrates significant potential for applications in the energy storage field,particularly in supercapacitors.It is widely regarded as one of the most representative transition metal dichalcogenides.MoS_(2)possesses a high theoretical specific capacitance,abundant edge active sites,and favorable tunability and structural diversity,which provide it with a distinct advantage in the construction of advanced electrode structures.Additionally,the anisotropic characteristics of MoS_(2)concerning electron and ion transport offer more dimensions for regulating its electrochemical behavior.This work will systematically review various synthesis strategies for MoS_(2)and its recent advancements in energy storage,with a particular focus on the mechanisms by which interlayer spacing modulation affects energy storage behavior in supercapacitor configurations.The discussion will encompass a comprehensive logical framework that spans material structure modifications,electronic configuration evolution,and enhancements in macroscopic device performance.This review aims to provide theoretical support and practical guidance for the application of MoS_(2)in the next generation of highperformance energy storage devices.展开更多
The transient liquid-phase(TLP)diffusion bonding of GH5188 with a BNi-5 interlayer was focused on.Parameters were chosen and optimized for GH5188 alloy according to the TLP joining mechanism.The microstructure evoluti...The transient liquid-phase(TLP)diffusion bonding of GH5188 with a BNi-5 interlayer was focused on.Parameters were chosen and optimized for GH5188 alloy according to the TLP joining mechanism.The microstructure evolution and mechanical properties of the joints were studied.Results show that the relatively complete isothermal solidification zone(ISZ)ensures a reliable connection of the base metal(BM).Within the temperature range of 1110–1190°C,higher bonding temperatures can widen ISZ and promote joint composition homogenization,thus improving mechanical properties.However,the increase in precipitated phase has an adverse effect on the mechanical properties of the joint.The maximum shear strength,reaching 482 MPa,is achieved at 1130°C,representing 84.6%of BM strength.Within the pressure range of 5–15 MPa,both precipitated phases in adiabatic solidification zone(ASZ)and voids generated by partial melting increase.On the contrary,their sizes decrease significantly under higher bonding pressure,resulting in an upward trend in alloy mechanical properties.The maximum shear strength of 490 MPa is attained at a bonding pressure of 15 MPa.The joint exhibits a typical mixed fracture pattern,with the small brittle M_(23)C_(6) phase and voids significantly impacting mechanical properties.Nano-indentation tests indicate that ASZ is a potential source of cracks.展开更多
Due to the weak interlayer interactions,the binary Ⅲ-Ⅵ chalcogenides Ga Se can exist in several distinct polymorphs.Among them,the so-called β-and ε-phases simultaneously exhibit favorable total energies and moder...Due to the weak interlayer interactions,the binary Ⅲ-Ⅵ chalcogenides Ga Se can exist in several distinct polymorphs.Among them,the so-called β-and ε-phases simultaneously exhibit favorable total energies and moderate band gaps,which offer a good platform to explore their thermoelectric properties.Here,we demonstrate by first-principles calculations that the two systems have very similar band structures and phonon dispersions,despite different stacking sequences between adjacent layers.Interestingly,the lattice thermal conductivity of ε-GaSe is obviously lower than that of β-GaSe,which is inherently tied to stronger lattice anharmonicity caused by bonding heterogeneity.Besides,both systems exhibit higher p-type power factors due to doubly degenerate bands with weaker dispersions around the valence band maximum.As a consequence,a significantly enhanced p-type figure-of-merit of 2.1 can be realized at 700 K along the out-of-plane direction of theε-phase.展开更多
Earth-abundant,layered birnessite is promising cathode for electrochemical capacitors due to the presence of confined nanofluids in interlayers for rapid ion storage.Previous work has demonstrated the capacitive co-in...Earth-abundant,layered birnessite is promising cathode for electrochemical capacitors due to the presence of confined nanofluids in interlayers for rapid ion storage.Previous work has demonstrated the capacitive co-intercalation of water and K+ions into birnessite in aqueous electrolytes,but in-depth quantitative investigations of the interactions between confined water and an external organic electrolyte are still lacking.In this work,we reveal the intercalation pseudocapacitance of hydrated birnessite(Na_(0.4)MnO_(2)·0.53H_(2)O)in sodium-based organic electrolytes via operando electrochemical quartz crystal microbalance(EQCM),and ex situ X-ray diffraction and Raman spectroscopy.The Na+ions are completely desolvated at the Na_(0.4)MnO_(2)·0.53H_(2)O-organic electrolyte interfaces and intercalate into the interlayers,while the confined water does not co-extract.The net Na+intercalation is a pseudocapacitive behavior without phase changes,displaying a high capacitive contribution of 85.6%at 1.0 m V/s.Additionally,EQCM results indicate the contributions of cation-dominated electric double layer(EDL)adsorption to the total charge storage.By replacing different solvents and anions in sodium-based organic electrolytes,we verify that Na+pseudocapacitive intercalation dominates the charge storage properties.展开更多
The potential of the vertical-horizontal well hybrid SAGD technique for developing shallow heavy oil reservoirs is gradually being realized.However,challenges remain in terms of low thermal efficiency and high carbon ...The potential of the vertical-horizontal well hybrid SAGD technique for developing shallow heavy oil reservoirs is gradually being realized.However,challenges remain in terms of low thermal efficiency and high carbon emissions in reservoirs with interlayers.Currently,there is limited research on the low-carbon strategy of coupling exhaust gas from steam boilers with the VH-SAGD technique.Herein,considering heterogeneity,a series of flue gas-assisted VH-SAGD experiments were conducted employing a high-performance 2D visualization model.The mechanism of enhanced recovery of flue gas in VH-SAGD and the effect of its injection methods were studied,with a focus on steam chamber development and oil saturation distribution.Crucially,the interlayer length was optimized to enhance oil recovery,providing a new perspective for well location design in heavy oil reservoirs with interlayers.The results showed that flue gas,as an additive,could fully exploit the well-type advantage of VH-SAGD.By supplementing energy at the reservoir top,flue gas effectively promoted steam chamber development,expanded the oil drainage area of VH-SAGD,and increased the oil recovery from 58.9%to 71.7%.The flow channels formed by pre-injection flue gas accelerated the early-stage expansion of the steam chamber while also inducing lateral migration of steam,slowing steam rise,and consequently increasing the heating range within the low-permeability layer.When the distance between the vertical and horizontal wells was set to twice the interlayer length,the negative effects of the interlayer were more effectively turned into advantages.Because when the lateral development distance of the steam chamber in the low-permeability layer slightly exceeds the interlayer,enhanced heating of the lower part of the reservoir occurred through vertical convection of rising steam and returning condensate.The research results contribute to reducing carbon emissions from steam-based heavy oil extraction while advancing the maturity of VH-SAGD.展开更多
Predicting the gas diffusion coefficient of water-saturated Na-bentonite is crucial for the overall performance of the geological repository for isolating high-level radioactive waste(HLW).In this study,a conceptual m...Predicting the gas diffusion coefficient of water-saturated Na-bentonite is crucial for the overall performance of the geological repository for isolating high-level radioactive waste(HLW).In this study,a conceptual model that incorporates a multi-porosity system was proposed,dividing the pore space into free water pores,interlayer water pores,and diffuse double layer(DDL)water pores,to describe the molecular diffusion behaviour of the dissolved gas in saturated bentonite.In this model,gas diffusion in these three porosities is considered as independent and parallel processes.The apparent gas diffusion coefficient is quantified by applying weighted approximations that consider the specific porosity,tortuosity factor,and constrictivity factor within each porosity domain.For verification,experimental data from gas diffusion tests on saturated MX-80 and Kunipia-F bentonite specimens across a wide range of dry densities were utilized.The proposed model could successfully capture the overall trend of the apparent gas diffusion coefficient for bentonite materials across the partial dry density of montmorillonite ranging from 900 kg/m^(3)to 1820 kg/m^(3),by employing only one fitting parameter of the scaling factor.When the partial dry density of montmorillonite decreased to 800 kg/m^(3),the proposed model shows an underestimation of the apparent gas diffusion coefficient due to possible changes of the tortuosity factor.Model predictions indicate that gas diffusion in saturated bentonite is primarily controlled by the free pore domain,with minimal contributions from DDL pores.Despite being the dominant pore type,interlayer pores contribute limitedly to total Da/Dw values due to significant constrictivity effects.展开更多
Surface adsorption plays a crucial role in various natural and industrial processes,particularly in the field of energy storage.The adsorption of sodium atoms on 2D layered materials can significantly impact their per...Surface adsorption plays a crucial role in various natural and industrial processes,particularly in the field of energy storage.The adsorption of sodium atoms on 2D layered materials can significantly impact their performance as carriers and electrodes in ion batteries.While it is commonly acknowledged that pristine graphene is not favorable for sodium ion adsorption,the suitability of other 2D materials with similar honeycomb symmetry remains unclear.In this study,we employ systematic first-principles calculations to explore interlayer interactions and electron transfer effects on sodium adsorption on 2D van der Waals(vdW)heterostructures(HTSs)surfaces.Our results demonstrate that sodium adsorption is energetically favorable on these substrates.Moreover,we find that the adsorption strength can be effectively tuned by manipulation of the electron accumulation or depletion of the layer directly interacting with the sodium atom.By stacking these layered materials with different electron abundancy to form vd W HTSs,the charge density of the substrate becomes tunable through interlayer charge transfer.In these vdW HTSs,the adsorption behavior of sodium is primarily controlled by the absorption layer and exhibits a linear correlation with its pz-band center.Additionally,we identify linear correlations between the sodium adsorption energies,the electron loss of the sodium atom,the interlayer charge transfer,and the heights of the adsorbed sodium atom.These discoveries underscore the impact of interlayer electron transfer and interactions on sodium ion adsorption on 2D vd W HTSs and providing new insights into material design for alkali atom adsorption.展开更多
Incorporating organic bulky cations in the precursor or post-treatment to achieve two-dimensional/thr ee-dimensional(2D/3D)heterojunction is an effective strategy for enhancing the stability of perovskite materials.Ho...Incorporating organic bulky cations in the precursor or post-treatment to achieve two-dimensional/thr ee-dimensional(2D/3D)heterojunction is an effective strategy for enhancing the stability of perovskite materials.However,the issue of insufficient charge transport in 2D perovskites limits their development,and the fundamental mechanism of out-of-plane carrier transport remains unclear.This study designed and synthesized seven organic phenyl-core cations,differentiated at the 1-and 1,4-positions,and identified the impacts on the corresponding properties of the 2D crystalline perovskite.Shorter cations facilitated a more compact arrangement of adjacent inorganic layers,aligning to favor charge transport along the vertical direction.In addition,introducing high electronegativity led to increased intermolecular interactions,resulting in enhanced structural stability and improved phenyl ring π-orbital overlap and interlayer electron coupling,yielding efficient charge transport.Resilience to thermal stressing of the perovskite was strongly correlated with the carbon chain length of the spacer cations.The increase in cation length and the reduction in the rigidity of the amino-terminal both aided in the dispersion of thermal stress in the inorganic framework.Additional hydrogen bonding also contributed to mitigating structural disorder.展开更多
The diversity of interlayers in shale oil reservoir leads to a low degree of vertical reconstruction.This paper aims to propose a method to guide the synchronous initiation of hydraulic fractures in different layers b...The diversity of interlayers in shale oil reservoir leads to a low degree of vertical reconstruction.This paper aims to propose a method to guide the synchronous initiation of hydraulic fractures in different layers by drilling multi-layer radial wells in spatial positions,and to form a fracture network that satisfies the vertical propagation range and complexity.In this paper,a 3D(three-dimensional)multi-layer radial well fracturing model considering fluid-mechanics coupling is established and the properties of shale oil reservoir are characterized according to the field geological profile.The influences of radial well spacing,fracturing fluid injection rate,and fracturing fluid viscosity on vertical fracture communication in multilayer radial wells are investigated.The results show that the radial well has the characteristics of guiding fracture penetrating interlayers.Reducing radial well spacing and appropriately increasing injection rate and viscosity are beneficial to improving vertical fracture propagation ability.However,high fracture fluid viscosity under the same displacement will lead to a significant increase in fracture aperture and weaken the total fracture area.In addition,if the stress interference around the radial wells is low,the radial well can be located in the middle of each layer to minimize the fracture height limitation.This study can provide a solution idea for vertical propagation limitation of hydraulic fractures in shale oil reservoir.展开更多
Lithium-sulfur batteries(LSBs)are promising energy storage systems due to their low cost and high energy density.However,sluggish reaction kinetics and the“shuttle effect”of lithium polysulfides(LiPSs)from sulfur ca...Lithium-sulfur batteries(LSBs)are promising energy storage systems due to their low cost and high energy density.However,sluggish reaction kinetics and the“shuttle effect”of lithium polysulfides(LiPSs)from sulfur cathode hinder the practical application of LSBs.In this work,a separator loaded with the Eu_(2)O_(3-δ)nanoparticles/carbon nanotube interlayer is designed to immobilize Li PSs and catalyze their conversion reaction.The oxygen-deficient Eu_(2)O_(3-δ)nanoparticles,with abundant catalytic sites,promote Li PSs conversion kinetics even at high current densities.Moreover,the unique 4f electronic structure of Eu_(2)O_(3-δ)effectively mitigates undesired sulfur cathode crossover,significantly enhancing the cycling performance of LSBs.Specifically,a high capacity of 620.7 mAh/g at a rate of 5 C is achieved,maintaining at 545 mAh/g after 300 cycles at 1 C.This work demonstrates the potential application of rare earth catalysts in LSBs,offering new research avenues for promoting dynamic conversion design in electrocatalysts.展开更多
Cobalt phosphides are potential catalysts to assist the conversion of lithium polysulfides(LiPSs)in lithium-sulfur(Li-S)batteries.However,existing synthesis methods have difficulty precisely tuning their band valences...Cobalt phosphides are potential catalysts to assist the conversion of lithium polysulfides(LiPSs)in lithium-sulfur(Li-S)batteries.However,existing synthesis methods have difficulty precisely tuning their band valences,which is crucial to balancing intermediate products'adsorption and conversion abilities in Li-S batteries.Moreover,studies on the relationship between their band structures and electrochemical performance are limited.Herein,we report cobalt phosphides(Co_(x)P)with a heterogeneous interface of CoP/Co2P embedded in hollow carbon nanofibers(denoted as Co_(x)P@HCNF)via a one-step sequential phosphorization and carbonization strategy,which is applied as an effective interlayer for Li-S batteries.The Co band valence in CoxP was adjusted to regulate the d-p band gap.Theoretical calculations predict that Co_(x)P with a narrowed d-p band center can optimize the electron transfer kinetics and the adsorption affinity with LiPSs.Li-S full cells with a Co_(x)P@HCNF interlayer demonstrated a high specific capacity of1265 mA h g^(-1)at 0.2C and excellent cycle stability of 788 mA h g^(-1)over 400 cycles at 2.0C.A cell with a lean electrolyte(6.0μL mg^(-1))and a high sulfur loading(6.2 mg cm^(-2))delivered a high areal capacity of4.5 mA h cm^(-2)at 0.5C.This study demonstrates that bimetallic coupling-induced electronic-state modulation effectively balances the chemical adsorption and catalytic capability for developing high-performance Li-S batteries.展开更多
The recently discovered high-temperature superconductor La_(3)Ni_(2)O_(7)under high pressure has sparked considerable debate.Central controversies revolve around whether interlayer or intralayer pairing mechanisms dom...The recently discovered high-temperature superconductor La_(3)Ni_(2)O_(7)under high pressure has sparked considerable debate.Central controversies revolve around whether interlayer or intralayer pairing mechanisms dominate and whether hybridization plays a crucial role in establishing superconductivity.However,experimental clarification remains challenging due to the limitations of state-of-the-art techniques under high-pressure conditions.Here,we propose that quasiparticle tunneling and Andreev reflection could offer practical methods to differentiate pairing scenarios.Specifically,we predict that hybridization between the d_(x^(2)-y^(2))metallic bands and the strongly renormalized flat d_(z^(2))quasiparticle bands may induce an asymmetric Fano line shape.In the superconducting state,we show that Andreev reflection would be significantly suppressed in interlayer pairing superconductivity with limited interlayer hopping.We recommend future experiments to test these predictions and shed light on the fundamental physics of superconducting La_(3)Ni_(2)O_(7)and other multi-layer nickelate superconductors.展开更多
基金financially supported by the National Natural Science Foundation of China(nos.21971012,61933002,21601015,21625102,21674012,and 81601549)the National Key Research and Development Program of China(2020YFB1506300)Beijing Institute of Technology Research Fund Program for Young Scholars。
文摘The hydrogen-bonded organic frameworks(HOFs)as a new type of porous framework materials have been widely studied in various areas.However,the lack of appropriate active sites,low intrinsic conductivity,and poor stability limited their performance in the field of electrocatalysis.Herein,we designed two 2D metal hydrogen-bonded organic frameworks(2D–M–HOF,M=Cu^(2+)or Ni^(2+))with coordination compounds based on 2,3,6,7,14,15-hexahydroxyl cyclotricatechylene and transition metal ions(Cu^(2+)and Ni^(2+)),respectively.The crystal structure of 2D–Cu–HOF is determined by continuous rotation electron diffraction,indicating an undulated 2D hydrogen-bond network with interlayeredπ-πstacking.The flexible structure of 2D–M–HOF leads to the formation of self-adaption interlayered sites,resulting in superior activity and selectivity in the electrocatalytic conversion of CO_(2) to C_(2) products,achieving a total Faradaic efficiency exceeding 80%due to the high-efficiency C–C coupling.The experimental results and density functional calculations verify that the undulated 2D–M–HOF enables the energetically favorable formation of*OCCHO intermediate.This work provides a promising strategy for designing HOF catalysts in electrocatalysis and related processes.
基金supported by the National Natural Science Foundation of China (No. 41976074)National Key Research and Development Plan (No. 2017YFC030 7600)+2 种基金the Taishan Scholar Special Experts Project (No. ts201712079)Qingdao National Laboratory for Marine Science and Technology (No. QNLM2016ORP0207)the Graduate School Innovation Program of China University of Petroleum (East China) (No. YCX2019020)
文摘The complex distribution of gas hydrate in sediments makes understanding the mechanical properties of hydrate-bearing sediments a challenging task.The mechanical behaviors of hydrate-bearing interlayered sediments are still poorly known.A series of triaxial shearing tests were conducted to investigate the strength parameters and deformation properties of methane hydrate-bearing interlayered sediments at the effective pressure of 1 MPa.The results indicate that the stress-strain curves of hydrate-bearing interlayered sediments are significantly different from that of hydrate-bearing sediments.The peak strength,Young's modulus,initial yielding modulus,and failure mode are deeply affected by the methane hydrate distribution.The failure behaviors and mechanism of strain softening and hardening patterns of the interlayered specimens are more complicated than those of the integrated specimens.This study compares the different mechanical behaviors between integrated and interlayered specimens containing gas hydrate,which can serve as a reference for the prediction and analysis of the deformation behaviors of natural gas hydrate reservoirs.
基金supported by National Natural Science Foundation of China(No.51971046)Fundamental Research Funds for the Central Universities,China(No.2020CDJGFCL005)。
文摘TC21 titanium alloy,as an important metal to fabricate the aircraft structural components,has attracted great attentions recently.A TC21 titanium alloy with widmanst?tten structure was isothermally compressed.Based on the microstructure observation,the evolution of initialβgrain,Grain Boundaryαphase(α;),lamellar a and interlayeredβwas systematically investigated.The results showed that,with the increasing of height reduction,theα;underwent an evolution process from bending/kinking to breaking inducing the corresponding blurring of initial coarse b grain outline.Meanwhile,a significant phase transformation from a to b took place at the terminations of brokenα;.The evolution of lamellarαand interlayeredβin the colony was closely related to their deformation compatibility.In the a colony,the interlayered b experienced a larger deformation amount than lamellarα.The higher distortion energy promoted the occurrence of Dynamic Recovery(DRV)and Dynamic Recrystallization(DRX)to generate many Low Angle Boundaries(LABs)and High Angle Boundaries(HABs)in interlayered b,which induced an apparent grain refinement of b phase.On the contrary,the lower distortion energy and low deformation temperature suppressed the occurrence of DRV/DRX and restrained the globularization of lamellarα.Furthermore,the microstructure observation clearly revealed that the shearing separation mechanism dominated the evolution of the a phase from lamellar to short bar-like morphology.
文摘Al-pillared interlayered montmorillonite (Al-PILM) was prepared using the artificial Na-montmorillonite from the Qingfengshan bentonite mine as a starting material mixed with Al-pillaring solutions.The microstructure of the materials was studied by an X-ray powder diffractometer and a Fourier transform infrared (FTIR) spectrometer.The results indicated that the basal spacing [d(001) value] of the materials was increased significantly to 1.9194 nm relative to Na-montmorillonite (1.2182 nm).After calcined for 2 h at 300℃,the basal spacing was stabilized at 1.8394 nm and the layered structure of the materials was not destroyed.Thermal analysis was conducted by a thermal gravimetry and differential thermal analysis (TG-DTA) instrument,it showed that Al-PILM lost physically adsorbed water below 230.6℃ and water formed by dehydroxylation of the pillars at around 497.1℃, with a peak of the phase transformation at 903.0℃.
基金financial support from the JSPS KAKENHI Grant-in-Aid for Scientific Research(B),No.21H02035KAKENHI Grant-in-Aid for Challenging Research(Exploratory),No.21K19017+2 种基金KAKENHI Grant-in-Aid for Transformative Research Areas(B),No.21H05100National Natural Science Foundation of China,No.22409033 and No.22409035Basic and Applied Basic Research Foundation of Guangdong Province,No.2022A1515110470.
文摘Protonic solid oxide electrolysis cells(P-SOECs)are a promising technology for water electrolysis to produce green hydrogen.However,there are still challenges related key materials and anode/electrolyte interface.P-SOECs with Zr-rich electrolyte,called Zr-rich side P-SOECs,possess high thermodynamically stability under high steam concentrations but the large reaction resistances and the current leakage,thus the inferior performances.In this study,an efficient functional interlayer Ba_(0.95)La_(0.05)Fe_(0.8)Zn_(0.2)O_(3-δ)(BLFZ)in-between the anode and the electrolyte is developed.The electrochemical performances of P-SOECs are greatly enhanced because the BLFZ can greatly increase the interface contact,boost anode reaction kinetics,and increase proton injection into electrolyte.As a result,the P-SOEC yields high current density of 0.83 A cm^(-2) at 600℃ in 1.3 Vamong all the reported Zr-rich side cells.This work not only offers an efficient functional interlayer for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability.
基金supported by the Natural Science Basic Research Program of Shaanxi(2024JC-YBMS-202).
文摘Interlayer is an important factor affecting the distribution of remaining oil.Accurate identification of interlayer distribution is of great significance in guiding oilfield production and development.However,the traditional method of identifying interlayers has some limitations:(1)Due to the existence of overlaps in the cross plot for different categories of interlayers,it is difficult to establish a determined model to classify the type of interlayer;(2)Traditional identification methods only use two or three logging curves to identify the types of interlayers,making it difficult to fully utilize the information of the logging curves,the recognition accuracy will be greatly reduced;(3)For a large number of complex logging data,interlayer identification is time-consuming and laborintensive.Based on the existing well area data such as logging data and core data,this paper uses machine learning method to quantitatively identify the interlayers in the single well layer of CIII sandstone group in the M oilfield.Through the comparison of various classifiers,it is found that the decision tree method has the best applicability and the highest accuracy in the study area.Based on single well identification of interlayers,the continuity of well interval interlayers in the study area is analyzed according to the horizontal well.Finally,the influence of the continuity of interlayers on the distribution of remaining oil is verified by the spatial distribution characteristics of interlayers combined with the production situation of the M oilfield.
文摘A functional interlayer based on two-dimensional(2D)porous modified vermiculite nanosheets(PVS)was obtained by acid-etching vermiculite nanosheets.The as-obtained 2D porous nanosheets exhibited a high specific surface area of 427 m^(2)·g^(-1)and rich surface active sites,which help restrain polysulfides(LiPSs)through good physi-cal and chemical adsorption,while simultaneously accelerating the nucleation and dissolution kinetics of Li_(2)S,effec-tively suppressing the shuttle effect.The assembled lithium-sulfur batteries(LSBs)employing the PVS-based inter-layer delivered a high initial discharge capacity of 1386 mAh·g^(-1)at 0.1C(167.5 mAh·g^(-1)),long-term cycling stabil-ity,and good rate property.
文摘Due to its unique layered structure and excellent electrochemical properties,molybdenum disulfide(MoS_(2))demonstrates significant potential for applications in the energy storage field,particularly in supercapacitors.It is widely regarded as one of the most representative transition metal dichalcogenides.MoS_(2)possesses a high theoretical specific capacitance,abundant edge active sites,and favorable tunability and structural diversity,which provide it with a distinct advantage in the construction of advanced electrode structures.Additionally,the anisotropic characteristics of MoS_(2)concerning electron and ion transport offer more dimensions for regulating its electrochemical behavior.This work will systematically review various synthesis strategies for MoS_(2)and its recent advancements in energy storage,with a particular focus on the mechanisms by which interlayer spacing modulation affects energy storage behavior in supercapacitor configurations.The discussion will encompass a comprehensive logical framework that spans material structure modifications,electronic configuration evolution,and enhancements in macroscopic device performance.This review aims to provide theoretical support and practical guidance for the application of MoS_(2)in the next generation of highperformance energy storage devices.
基金National Natural Science Foundation of China(52075449,5197052086)。
文摘The transient liquid-phase(TLP)diffusion bonding of GH5188 with a BNi-5 interlayer was focused on.Parameters were chosen and optimized for GH5188 alloy according to the TLP joining mechanism.The microstructure evolution and mechanical properties of the joints were studied.Results show that the relatively complete isothermal solidification zone(ISZ)ensures a reliable connection of the base metal(BM).Within the temperature range of 1110–1190°C,higher bonding temperatures can widen ISZ and promote joint composition homogenization,thus improving mechanical properties.However,the increase in precipitated phase has an adverse effect on the mechanical properties of the joint.The maximum shear strength,reaching 482 MPa,is achieved at 1130°C,representing 84.6%of BM strength.Within the pressure range of 5–15 MPa,both precipitated phases in adiabatic solidification zone(ASZ)and voids generated by partial melting increase.On the contrary,their sizes decrease significantly under higher bonding pressure,resulting in an upward trend in alloy mechanical properties.The maximum shear strength of 490 MPa is attained at a bonding pressure of 15 MPa.The joint exhibits a typical mixed fracture pattern,with the small brittle M_(23)C_(6) phase and voids significantly impacting mechanical properties.Nano-indentation tests indicate that ASZ is a potential source of cracks.
基金supported by the National Natural Science Foundation of China(Grant Nos.62074114 and 12474019)。
文摘Due to the weak interlayer interactions,the binary Ⅲ-Ⅵ chalcogenides Ga Se can exist in several distinct polymorphs.Among them,the so-called β-and ε-phases simultaneously exhibit favorable total energies and moderate band gaps,which offer a good platform to explore their thermoelectric properties.Here,we demonstrate by first-principles calculations that the two systems have very similar band structures and phonon dispersions,despite different stacking sequences between adjacent layers.Interestingly,the lattice thermal conductivity of ε-GaSe is obviously lower than that of β-GaSe,which is inherently tied to stronger lattice anharmonicity caused by bonding heterogeneity.Besides,both systems exhibit higher p-type power factors due to doubly degenerate bands with weaker dispersions around the valence band maximum.As a consequence,a significantly enhanced p-type figure-of-merit of 2.1 can be realized at 700 K along the out-of-plane direction of theε-phase.
基金supported by the National Natural Science Foundation of China(No.22179113)the Guangdong High-Level Innovation Institute Project(No.2021B0909050001)the Fundamental Research Funds for the Central Universities(No.20720230028)。
文摘Earth-abundant,layered birnessite is promising cathode for electrochemical capacitors due to the presence of confined nanofluids in interlayers for rapid ion storage.Previous work has demonstrated the capacitive co-intercalation of water and K+ions into birnessite in aqueous electrolytes,but in-depth quantitative investigations of the interactions between confined water and an external organic electrolyte are still lacking.In this work,we reveal the intercalation pseudocapacitance of hydrated birnessite(Na_(0.4)MnO_(2)·0.53H_(2)O)in sodium-based organic electrolytes via operando electrochemical quartz crystal microbalance(EQCM),and ex situ X-ray diffraction and Raman spectroscopy.The Na+ions are completely desolvated at the Na_(0.4)MnO_(2)·0.53H_(2)O-organic electrolyte interfaces and intercalate into the interlayers,while the confined water does not co-extract.The net Na+intercalation is a pseudocapacitive behavior without phase changes,displaying a high capacitive contribution of 85.6%at 1.0 m V/s.Additionally,EQCM results indicate the contributions of cation-dominated electric double layer(EDL)adsorption to the total charge storage.By replacing different solvents and anions in sodium-based organic electrolytes,we verify that Na+pseudocapacitive intercalation dominates the charge storage properties.
基金support for this work is received from the National Natural Science Foundation of China(Grant No.U22B20144).
文摘The potential of the vertical-horizontal well hybrid SAGD technique for developing shallow heavy oil reservoirs is gradually being realized.However,challenges remain in terms of low thermal efficiency and high carbon emissions in reservoirs with interlayers.Currently,there is limited research on the low-carbon strategy of coupling exhaust gas from steam boilers with the VH-SAGD technique.Herein,considering heterogeneity,a series of flue gas-assisted VH-SAGD experiments were conducted employing a high-performance 2D visualization model.The mechanism of enhanced recovery of flue gas in VH-SAGD and the effect of its injection methods were studied,with a focus on steam chamber development and oil saturation distribution.Crucially,the interlayer length was optimized to enhance oil recovery,providing a new perspective for well location design in heavy oil reservoirs with interlayers.The results showed that flue gas,as an additive,could fully exploit the well-type advantage of VH-SAGD.By supplementing energy at the reservoir top,flue gas effectively promoted steam chamber development,expanded the oil drainage area of VH-SAGD,and increased the oil recovery from 58.9%to 71.7%.The flow channels formed by pre-injection flue gas accelerated the early-stage expansion of the steam chamber while also inducing lateral migration of steam,slowing steam rise,and consequently increasing the heating range within the low-permeability layer.When the distance between the vertical and horizontal wells was set to twice the interlayer length,the negative effects of the interlayer were more effectively turned into advantages.Because when the lateral development distance of the steam chamber in the low-permeability layer slightly exceeds the interlayer,enhanced heating of the lower part of the reservoir occurred through vertical convection of rising steam and returning condensate.The research results contribute to reducing carbon emissions from steam-based heavy oil extraction while advancing the maturity of VH-SAGD.
基金financial support from the National Natural Science Foundation of China(Grant No.42202304)is greatly acknowledged.
文摘Predicting the gas diffusion coefficient of water-saturated Na-bentonite is crucial for the overall performance of the geological repository for isolating high-level radioactive waste(HLW).In this study,a conceptual model that incorporates a multi-porosity system was proposed,dividing the pore space into free water pores,interlayer water pores,and diffuse double layer(DDL)water pores,to describe the molecular diffusion behaviour of the dissolved gas in saturated bentonite.In this model,gas diffusion in these three porosities is considered as independent and parallel processes.The apparent gas diffusion coefficient is quantified by applying weighted approximations that consider the specific porosity,tortuosity factor,and constrictivity factor within each porosity domain.For verification,experimental data from gas diffusion tests on saturated MX-80 and Kunipia-F bentonite specimens across a wide range of dry densities were utilized.The proposed model could successfully capture the overall trend of the apparent gas diffusion coefficient for bentonite materials across the partial dry density of montmorillonite ranging from 900 kg/m^(3)to 1820 kg/m^(3),by employing only one fitting parameter of the scaling factor.When the partial dry density of montmorillonite decreased to 800 kg/m^(3),the proposed model shows an underestimation of the apparent gas diffusion coefficient due to possible changes of the tortuosity factor.Model predictions indicate that gas diffusion in saturated bentonite is primarily controlled by the free pore domain,with minimal contributions from DDL pores.Despite being the dominant pore type,interlayer pores contribute limitedly to total Da/Dw values due to significant constrictivity effects.
基金the financial support by the National Key Research and Development Program of China(No.2019YFA0708700)the National Natural Science Foundation of China(Nos.62305196,U23B2087 and 62375158)+4 种基金the China Postdoctoral Science Foundation(No.GZC20231498)the Qingdao Postdoctoral Innovation Project(No.QDBSH20240102078)the Postdoctoral Innovation Program of Shandong Province(No.SDCX-ZG-202400318)Science and Technology Research Project of Hubei Provincial Department of Education(No.D20212603)Hubei University of Arts and Science(No.2020kypytd002)。
文摘Surface adsorption plays a crucial role in various natural and industrial processes,particularly in the field of energy storage.The adsorption of sodium atoms on 2D layered materials can significantly impact their performance as carriers and electrodes in ion batteries.While it is commonly acknowledged that pristine graphene is not favorable for sodium ion adsorption,the suitability of other 2D materials with similar honeycomb symmetry remains unclear.In this study,we employ systematic first-principles calculations to explore interlayer interactions and electron transfer effects on sodium adsorption on 2D van der Waals(vdW)heterostructures(HTSs)surfaces.Our results demonstrate that sodium adsorption is energetically favorable on these substrates.Moreover,we find that the adsorption strength can be effectively tuned by manipulation of the electron accumulation or depletion of the layer directly interacting with the sodium atom.By stacking these layered materials with different electron abundancy to form vd W HTSs,the charge density of the substrate becomes tunable through interlayer charge transfer.In these vdW HTSs,the adsorption behavior of sodium is primarily controlled by the absorption layer and exhibits a linear correlation with its pz-band center.Additionally,we identify linear correlations between the sodium adsorption energies,the electron loss of the sodium atom,the interlayer charge transfer,and the heights of the adsorbed sodium atom.These discoveries underscore the impact of interlayer electron transfer and interactions on sodium ion adsorption on 2D vd W HTSs and providing new insights into material design for alkali atom adsorption.
基金financially supported by the Key Fund Project of Tianjin Natural Science Foundation(24JCZDJC00510)the Fundamental Research Funds for the Central Universitiespartially supported by the U.S.Department of Energy under Contract No.DE-AC3608GO28308 with Alliance for Sustainable Energy,Limited Liability Company(LLC),the Manager and Operator of the National Renewable Energy Laboratory,through Grant No.DE-SC0020718。
文摘Incorporating organic bulky cations in the precursor or post-treatment to achieve two-dimensional/thr ee-dimensional(2D/3D)heterojunction is an effective strategy for enhancing the stability of perovskite materials.However,the issue of insufficient charge transport in 2D perovskites limits their development,and the fundamental mechanism of out-of-plane carrier transport remains unclear.This study designed and synthesized seven organic phenyl-core cations,differentiated at the 1-and 1,4-positions,and identified the impacts on the corresponding properties of the 2D crystalline perovskite.Shorter cations facilitated a more compact arrangement of adjacent inorganic layers,aligning to favor charge transport along the vertical direction.In addition,introducing high electronegativity led to increased intermolecular interactions,resulting in enhanced structural stability and improved phenyl ring π-orbital overlap and interlayer electron coupling,yielding efficient charge transport.Resilience to thermal stressing of the perovskite was strongly correlated with the carbon chain length of the spacer cations.The increase in cation length and the reduction in the rigidity of the amino-terminal both aided in the dispersion of thermal stress in the inorganic framework.Additional hydrogen bonding also contributed to mitigating structural disorder.
基金financially supported by the National Natural Science Foundation of China(Grant Nos.52074315 and 52122401)Moreover,the authors also thank the financial support from China Scholarship Council(Grant No.202306440033).
文摘The diversity of interlayers in shale oil reservoir leads to a low degree of vertical reconstruction.This paper aims to propose a method to guide the synchronous initiation of hydraulic fractures in different layers by drilling multi-layer radial wells in spatial positions,and to form a fracture network that satisfies the vertical propagation range and complexity.In this paper,a 3D(three-dimensional)multi-layer radial well fracturing model considering fluid-mechanics coupling is established and the properties of shale oil reservoir are characterized according to the field geological profile.The influences of radial well spacing,fracturing fluid injection rate,and fracturing fluid viscosity on vertical fracture communication in multilayer radial wells are investigated.The results show that the radial well has the characteristics of guiding fracture penetrating interlayers.Reducing radial well spacing and appropriately increasing injection rate and viscosity are beneficial to improving vertical fracture propagation ability.However,high fracture fluid viscosity under the same displacement will lead to a significant increase in fracture aperture and weaken the total fracture area.In addition,if the stress interference around the radial wells is low,the radial well can be located in the middle of each layer to minimize the fracture height limitation.This study can provide a solution idea for vertical propagation limitation of hydraulic fractures in shale oil reservoir.
基金the financial support from the National Natural Science Foundation of China(Nos.52104312,22278329,22271229,22105153)Qin Chuangyuan Talent Project of Shaanxi Province(Nos.2021QCYRC4-43,QCYRCXM-2022-308)the State Key Laboratory for Electrical Insulation and Power Equipment(No.EIPE23125)。
文摘Lithium-sulfur batteries(LSBs)are promising energy storage systems due to their low cost and high energy density.However,sluggish reaction kinetics and the“shuttle effect”of lithium polysulfides(LiPSs)from sulfur cathode hinder the practical application of LSBs.In this work,a separator loaded with the Eu_(2)O_(3-δ)nanoparticles/carbon nanotube interlayer is designed to immobilize Li PSs and catalyze their conversion reaction.The oxygen-deficient Eu_(2)O_(3-δ)nanoparticles,with abundant catalytic sites,promote Li PSs conversion kinetics even at high current densities.Moreover,the unique 4f electronic structure of Eu_(2)O_(3-δ)effectively mitigates undesired sulfur cathode crossover,significantly enhancing the cycling performance of LSBs.Specifically,a high capacity of 620.7 mAh/g at a rate of 5 C is achieved,maintaining at 545 mAh/g after 300 cycles at 1 C.This work demonstrates the potential application of rare earth catalysts in LSBs,offering new research avenues for promoting dynamic conversion design in electrocatalysts.
基金support from the National Natural Science Foundation of China(U21A20174)the Fundamental Research Program of Shanxi Province(202203021221049)+3 种基金the Science and Technology Innovation Talent Team Project of Shanxi Province(202304051001010)support from the Shenzhen Science and Technology Program(RCBS20221008093340100)support from the Australian Research Council(ARC)Discovery Early Career Researcher Award(DE230101068)support from the ARC Research Hub for Safe and Reliable Energy(IH200100035)。
文摘Cobalt phosphides are potential catalysts to assist the conversion of lithium polysulfides(LiPSs)in lithium-sulfur(Li-S)batteries.However,existing synthesis methods have difficulty precisely tuning their band valences,which is crucial to balancing intermediate products'adsorption and conversion abilities in Li-S batteries.Moreover,studies on the relationship between their band structures and electrochemical performance are limited.Herein,we report cobalt phosphides(Co_(x)P)with a heterogeneous interface of CoP/Co2P embedded in hollow carbon nanofibers(denoted as Co_(x)P@HCNF)via a one-step sequential phosphorization and carbonization strategy,which is applied as an effective interlayer for Li-S batteries.The Co band valence in CoxP was adjusted to regulate the d-p band gap.Theoretical calculations predict that Co_(x)P with a narrowed d-p band center can optimize the electron transfer kinetics and the adsorption affinity with LiPSs.Li-S full cells with a Co_(x)P@HCNF interlayer demonstrated a high specific capacity of1265 mA h g^(-1)at 0.2C and excellent cycle stability of 788 mA h g^(-1)over 400 cycles at 2.0C.A cell with a lean electrolyte(6.0μL mg^(-1))and a high sulfur loading(6.2 mg cm^(-2))delivered a high areal capacity of4.5 mA h cm^(-2)at 0.5C.This study demonstrates that bimetallic coupling-induced electronic-state modulation effectively balances the chemical adsorption and catalytic capability for developing high-performance Li-S batteries.
基金supported by the National Natural Science Foundation of China(Grant No.12474136)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB33010100)the National Key Research and Development Program of China(Grant No.2022YFA1402203)。
文摘The recently discovered high-temperature superconductor La_(3)Ni_(2)O_(7)under high pressure has sparked considerable debate.Central controversies revolve around whether interlayer or intralayer pairing mechanisms dominate and whether hybridization plays a crucial role in establishing superconductivity.However,experimental clarification remains challenging due to the limitations of state-of-the-art techniques under high-pressure conditions.Here,we propose that quasiparticle tunneling and Andreev reflection could offer practical methods to differentiate pairing scenarios.Specifically,we predict that hybridization between the d_(x^(2)-y^(2))metallic bands and the strongly renormalized flat d_(z^(2))quasiparticle bands may induce an asymmetric Fano line shape.In the superconducting state,we show that Andreev reflection would be significantly suppressed in interlayer pairing superconductivity with limited interlayer hopping.We recommend future experiments to test these predictions and shed light on the fundamental physics of superconducting La_(3)Ni_(2)O_(7)and other multi-layer nickelate superconductors.
