The use of lithium-ion batteries in portable electronic devices and electric vehicles has become well-established,and battery demand is rapidly increasing annually.While technological innovations in electrode material...The use of lithium-ion batteries in portable electronic devices and electric vehicles has become well-established,and battery demand is rapidly increasing annually.While technological innovations in electrode materials and battery performance have been pursued,the environmental threats and resource wastage posed by the resulting surge in used batteries have been overlooked.Spent batteries are technically inoperable but contain excess metal inside the structure,making recycling essential for environmental protection and recovery of scarce resources.The battery recycling industry has gradually emerged under the influence of government implementation and ecological protection trends.However,the annual recycling volume is still insufficient compared to the output volume of used batteries.Therefore,more recycling plants and advanced technologies are imperative to improve recycling efficiency.This article summarizes pretreatment,pyrometallurgical,and hydrometallurgical processes and technologies in three major parts,analyzes their applicability and environmental friendliness using industrial examples,highlights their technical shortcomings and problems,and emphasizes the bright future of battery recycling.展开更多
Graphdiyne(GDY),a rising star of carbon allotrope with sp-/sp?.hybridized one-atom-thick all-carbon two-dimensional(2D)network,has shown numerous unique structure and fascinating properties.Since the first successful ...Graphdiyne(GDY),a rising star of carbon allotrope with sp-/sp?.hybridized one-atom-thick all-carbon two-dimensional(2D)network,has shown numerous unique structure and fascinating properties.Since the first successful synthesis of GDY in 2010,GDY research has made a series of great progresses,and promoted the fundamental researches and practical applications in various fields of chemistry,physics,information science,material science,life science and environmental science and so on.展开更多
This study reports the synthesis of three sets of high-performance manganese(Mn)-doped Co_(3)O_(4)porous nanocrystals(PNCs)(5%Mn@Co_(3)O_(4),10%Mn@Co_(3)O_(4),and 15%Mn@Co_(3)O_(4))using a simple chemical co-precipita...This study reports the synthesis of three sets of high-performance manganese(Mn)-doped Co_(3)O_(4)porous nanocrystals(PNCs)(5%Mn@Co_(3)O_(4),10%Mn@Co_(3)O_(4),and 15%Mn@Co_(3)O_(4))using a simple chemical co-precipitation method.These catalysts were then used for the catalytic oxidation of carbon monoxide(CO).This investigation focused on the effects of Co^(2+)or Co^(3+)substitution by Mn^(2+)or Mn^(3+)within the Co_(3)O_(4)matrix on various properties of the PNCs,including their physicochemical characteristics,morphology,microstructure,reducibility,thermal stability,and their impact on the catalytic performance.Comprehensive characterization using techniques such as X-ray diffraction(XRD),scanning electron microscopy(SEM),Brunauer-Emmett-Teller(BET)analysis,X-ray photoelectron spectroscopy(XPS),Hydrogen-Temperature Programmed Reduction and(H_(2)-TPR),was employed to elucidate the factors responsible for effective CO oxidation.Compared to pure Mn3 O4 and Co_(3)O_(4),the Mn@Co_(3)O_(4)PNCs catalysts exhibited a more controllable microstructure and better dispersion of the active phase.The 5%Mn@Co_(3)O_(4)catalyst demonstrated the highest activity,achieving 90%CO oxidation at 197°C.This superior performance is attributed to its large specific surface area,excellent reduction capacity,and abundant oxygen species and vacancies.H_(2)-TPR and XPS analyses provided further insights into the reaction mechanism.Density functional theory calculations showed that the formation of bulk oxygen vacancies is more favorable when Mn^(3+)is substituted at the Co^(2+)sites.Overall,the chemical coprecipitation method offers a straightforward and cost-effective approach for producing Mn@Co_(3)O_(4)catalysts suitable for CO abatement in exhaust and flue gases.展开更多
Interfacial engineering,particularly the design of artificial solid-electrolyte interphases(SEIs),has been successfully applied in all-solid-state batteries(ASSLBs)for industrial applications.However,a fundamental und...Interfacial engineering,particularly the design of artificial solid-electrolyte interphases(SEIs),has been successfully applied in all-solid-state batteries(ASSLBs)for industrial applications.However,a fundamental understanding of the synthesis and mechanism models of artificial SEIs in all-solid-state Li-ion batteries remains limited.In this review,recent advances in designing and synthesizing artificial SEIs for ASSLBs to solve interfacial issues are thoroughly discussed,covering three main preparation methods and their technical routes:1)atomic layer deposition,2)sol-gel methods,and 3)mechanical ball-milling methods.Moreover,advanced ex-situ characterization techniques for artificial SEIs are comprehensively summarized.Finally,this review provides perspectives on techniques for the interface engineering of artificial SEIs for ASSLBs,with focus on promising methods for industrial applications.展开更多
This study focused on the synthesis of cerium oxide(CeO_(2))electrodes using the Successive Ionic Layer Adsorption and Reaction(SILAR)method to enhance supercapacitor performance.The fabricated thin films exhibited a ...This study focused on the synthesis of cerium oxide(CeO_(2))electrodes using the Successive Ionic Layer Adsorption and Reaction(SILAR)method to enhance supercapacitor performance.The fabricated thin films exhibited a face-centered cubic structure of cerium oxide with a distinctive cauliflower-like nanostructure.This unique morphology increased the surface area,facilitated efficient ion diffusion,and significantly improved the electrochemical performance.The CeO_(2)electrodes achieved a high specific capacitance of 659 F/g at a scan rate of 5 mV/s,as measured by cyclic voltammetry.The electrodes delivered a maximum energy density of 64 Wh/kg and a power density of 3499 W/kg.These results demonstrated that CeO_(2)thin films are promising candidates for advanced supercapacitors and hold great potential for future energy storage applications.展开更多
Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction(ORR)are indispensable for future fuel cells.Herein,we describe a heterostructure of Pd nanocrystals(PdNCs)on N-doped Ag nanowires(NWs)synthes...Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction(ORR)are indispensable for future fuel cells.Herein,we describe a heterostructure of Pd nanocrystals(PdNCs)on N-doped Ag nanowires(NWs)synthesized using a direct epitaxial growth strategy with a Pd loading of only 9.5 wt.%.The PdAg bimetallic heterostructure showed the highest mass activity among reported PdAg-based ORR electrocatalysts and exhibited excellent stability,with only a 1.5 mV decay in the half-wave potential even after 20000 cycles of continuous testing.The remarkably enhanced activity and durability can be attributed to the distinct advantages of the ultrasmall PdNCs,cocatalysts of N-doped AgNWs,and their heterointerfaces.This work reveals that the epitaxial growth of a heterostructure on a stable support is a promising strategy for promoting catalytic performance.展开更多
Nickel/cobalt-based materials are promising cathodes owing to the high redox potential,high specific capacity,and long cycling performance.However,with the mass-loading of the electrode increasing,it greatly hinders t...Nickel/cobalt-based materials are promising cathodes owing to the high redox potential,high specific capacity,and long cycling performance.However,with the mass-loading of the electrode increasing,it greatly hinders the ion diffusion and charge transport,resulting in serious decrease of the electrode capacity.Herein,a hierarchical nickel-cobalt-based porous nanoflower structure(NiCo-Nanoflower)composed of numerous ultrathin nanosheets is synthesized,which significantly enhances the surface area and provides additional active sites.Besides,the abundant oxygen defects in NiCo-Nanoflower significantly enhance its electrical conductivity.Therefore,the NiCo-Nanoflower electrode exhibits a high reversible capacity of up to 210.4 mAh g^(−1)at 0.5 A g^(−1)and excellent rate retention of 180.4 mAh g^(−1)at 8 A g^(−1)(104 mA cm^(−2))even under high areal mass loading of 13 mg cm^(−2).Upon assembly in a NiCo//Zn battery system,the configuration demonstrates exceptional electrochemical stability,maintaining 74.3%capacity retention after 5000 cycles.This work demonstrates that NiCo-Nanoflower,equipped with three-dimensional microstructure and oxygen-enriched defects,holds significant potential for application in high-mass-loading cathodes for alkaline aqueous zinc batteries.展开更多
Positive electrodes play a decisive role in exploring the Zn^(2+)storage mechanism and improving the electrochemical performance of aqueous Zn-ion batteries(AZIBs).Feasible design and preparation of cathode materials ...Positive electrodes play a decisive role in exploring the Zn^(2+)storage mechanism and improving the electrochemical performance of aqueous Zn-ion batteries(AZIBs).Feasible design and preparation of cathode materials have been crucial for AZIBs in recent years.Herein,taking the advantage of the tunnel structure of VO_(2),which can withstand volume change during charging/discharging,VO_(2)doped with Ce ions is synthesized by a simple one-step hydrothermal method and oxygen vacancies are synchronously generated during synthesis.It delivers a capacity of 158.5 mAh g^(−1)at the current density of 5 A g^(−1)after 1000 cycles and exhibits an excellent energy density of 312.8 Wh kg^(−1)at the power density of 142 W kg^(−1).The structural modification and prospect of enhancing its conductivity by doping with rare-earth metals and introducing oxygen vacancies may aid in improving the stability of AZIBs in the future.展开更多
Metal-cation doping is a fundamental strategy for enhancing catalyst performance.Fe-doped Ni_(0.85)Se/NF(Fe-Ni_(0.85)Se/NF)nanoparticles were prepared at 80°C via Fe^(2+)etching method.The addition of Fe altered ...Metal-cation doping is a fundamental strategy for enhancing catalyst performance.Fe-doped Ni_(0.85)Se/NF(Fe-Ni_(0.85)Se/NF)nanoparticles were prepared at 80°C via Fe^(2+)etching method.The addition of Fe altered the coordination environment of the Ni species along with the catalyst's morphology,creating additional active sites.Notably,the synergistic interaction between the bimetallic components augmented the built-in activity and accelerated reaction kinetics.The Fe-Ni_(0.85)Se/NF electrocatalysts demonstrated remarkable catalytic activity for the oxygen evolution reaction(OER),with an acceptable overpotential of 276 mV and a Tafel slope of 58.1 mV dec^(−1)at 100 mA cm^(−2).Moreover,they demonstrated exceptional durability.In situ Raman and X-ray photoelectron spectroscopy(XPS)analyses showed that the excellent OER performance stemmed from the reconstruction-induced hydroxyl oxide.This study offers a novel approach for streamlining the synthesis procedures and reducing the experimental costs for developing high-efficiency electrocatalysts.展开更多
Nanomaterials have emerged as an active area of research.This is because of their broad spectrum of applications such as sensors,white light emitting diodes(LEDs),electronic displays,and other optoelectronic devices i...Nanomaterials have emerged as an active area of research.This is because of their broad spectrum of applications such as sensors,white light emitting diodes(LEDs),electronic displays,and other optoelectronic devices in the optics and electronic industries owing to their size-and shape-dependent properties.The synthesis technique plays a crucial role in tuning the size and shape of the materials.Herein,we briefly describe these nanomaterials'fundamental aspects,properties,and applications.Various nanomaterial synthesis methods are discussed.Their advantages and disadvantages are highlighted in conjunction with the criteria for selecting a synthesis method.The principle underlying the sonochemical method and its applicability in synthesizing diverse sub-15 nm size nanoparticles(NPs)are presented.The main objective of this article is to review recent studies on lanthanide-doped nanophosphors and the various parameters that play key roles in achieving optimum luminescence emission.Both down-conversion and up-conversion mechanisms are discussed.The importance of the combinations and concentrations of the synthesizer/activator,color tuning,and host material are emphasized.展开更多
Herein N_(2)O decomposition over LaMO_(3)(M:Fe,Co,Ni)mixed oxides with perovskite structures has been optimized.The influence of the organic additive and the additive to(La^(3+)+Co^(2+))molar ratio on phase compositio...Herein N_(2)O decomposition over LaMO_(3)(M:Fe,Co,Ni)mixed oxides with perovskite structures has been optimized.The influence of the organic additive and the additive to(La^(3+)+Co^(2+))molar ratio on phase composition,particle aggregate size,textural properties,and catalytic activity of LaCoO_(3)has been determined for the first time.Glycine improved the phase purity of LaCoO_(3),enhanced the specific surface area and pore volume,and shifted the pore size distribution to the wider mesopore and macropore regions.LaCoO_(3)showed better activity than LaFeO_(3)and LaNiO_(3)owing to the greater reducibility of Co^(3+)and its large specific surface area,and correlations between the La^(3+):Co^(2+)molar ratio,particle aggregate size,pore volume for pores larger than 25 nm,and N_(2)O decomposition activity for LaCoO_(3)have been determined.Changes in the LaCoO_(3)textural properties following catalytic experiments with 10%water vapor added to the feed have also been analyzed here-in.展开更多
The evolution of the structural and electronic properties of the van der Waals layered ferromagnet CrBrs across the semiconductor-metal transition was investigated using X-ray powder diffraction and Raman spectroscopy...The evolution of the structural and electronic properties of the van der Waals layered ferromagnet CrBrs across the semiconductor-metal transition was investigated using X-ray powder diffraction and Raman spectroscopy at high pressures up to 38 GPa and by density functional theory(DFT)calculations at high pressures up to 120 GPa.The pressure behavior of the structural parameters and vibrational modes revealed a crossover from the quasi-two-dimensional system with weakly interacting atomic layers to the three-dimensional-like system with strongly interacting layers at P~15 GPa.This resulted in a significant modification of the pressure coefficients of the lattice parameters and interlayer distances.DFT calculations using first-principles generalized gradient ap-proximations of the Perdew-Burke-Ernzerhof(PBE)and Perdew-Burke-Ernzerhof-sol(PBEsol)functionals qual-itatively reproduced the high pressure effects on the structural and electronic properties of CrBr3,with more accurately results obtained by PBEsol.The relative increase of the binding energy absolute value between the van der Waals layers by 75 times in the pressure range up to 60 GPa was evaluated.Band gap closure associ-ated with the semiconductor-metal transition was found at P=6o GPa,which is higher than the experimentally determined value.展开更多
The field of tissue engineering has witnessed significant progress with the emergence of three-dimensional(3D)printing technologies.The ability to fabricate precise structures with complex geometries combined with the...The field of tissue engineering has witnessed significant progress with the emergence of three-dimensional(3D)printing technologies.The ability to fabricate precise structures with complex geometries combined with the in-tegration of two-dimensional(2D)materials,including graphene,graphene oxide,and transition metal dichalco-genides,has provided novel opportunities.This integration enables the fabrication of functional structures with tailored properties,leveraging the exceptional mechanical,electrical,and chemical characteristics of these mate-rials,in conjunction with the design flexibility offered by 3D printing.Herein,we review the recent advancements in the selection of appropriate 2D materials,diverse 3D printing methods employed for integration,and charac-terization techniques used to evaluate the performance of the resulting constructs.The successful integration of 3D printing and 2D materials holds immense potential for advancing tissue engineering and paving the way for personalized medicine,regenerative therapies,and point-of-care diagnostics.展开更多
Enhancing the activity ofα-secretase has emerged as a potential therapeutic strategy for treating Alzheimer’s disease(AD).The exploration of small molecules that can enhance α-secretase activity and their mechanism...Enhancing the activity ofα-secretase has emerged as a potential therapeutic strategy for treating Alzheimer’s disease(AD).The exploration of small molecules that can enhance α-secretase activity and their mechanisms provides insights for future AD treatments and the development of novel activators.In this study,ADAM10,a major α-secretase,is used as a model and is bound with the ligands(−)-epigallocatechin-3-gallate(EGCG)and ferulic acid(FA)in a 1:2 ratio(ADAM10:EGCG/FA=1:2/2)and equimolar ratio(ADAM10:EGCG:FA=1:1:1)to investigate the effects on ADAM10 activation and reveal the synergistic mechanism of the EGCG and FA combi-nation.The activity of ADAM10 was enhanced by the combination of EGCG and FA,compared to that achieved with EGCG or FA alone,where EGCG plays a dominant role,whereas FA plays a supportive role.The combined use of EGCG induces strong hydrophobic interactions between ADAM10 and FA,causing FA to dissociate from the S1 domain,thereby preventing the inhibition of ADAM10 activity by pure FA.The presence of FA allows EGCG to bind more precisely within the active cavity of ADAM10,thereby increasing the binding strength.Overall,the combination of EGCG and FA significantly increased the distance between the S1 domain and the cysteine-rich C-terminus,further opening up the cavity containing the active sites,consequently exposing more active sites and enhancing the activity of ADAM10.展开更多
Graphdiyne(GDY)is a novel carbon allotrope that has attracted significant attention owing to its unique structural and electronic properties.Comprising sp2-and sp-hybridized carbon atoms,GDY forms a two-dimensional st...Graphdiyne(GDY)is a novel carbon allotrope that has attracted significant attention owing to its unique structural and electronic properties.Comprising sp2-and sp-hybridized carbon atoms,GDY forms a two-dimensional structure via conjugated-C=C=C=C-linkages.These linkages result in a highlyπ-conjugated system with a natural bandgap that distinguishes GDY from other carbon materials such as graphene.This review systematically provides an overview of GDY,with a focus on its intrinsic properties and synthesis strategies,techniques to characterize its structure,and recent advanced applications.First,we summarize several GDY synthesis strategies,providing a detailed discussion of the advantages and disadvantages associated with each approach.Subsequently,several practical and precise techniques,including solid nuclear magnetic resonance,Raman,Fourier-transform infrared,and X-ray photoelectron spectroscopies,transmission electron microscopy,and selected area electron diffraction,to characterize the GDY structure are discussed.Next,we elucidate the unique structural and electronic properties of GDY using both theoretical frameworks and experimental methodologies.Finally,we comprehensively discuss the recent applications of GDY in various fields,including biomedicine,electronics,optoelectronics,energy storage,and catalysis.展开更多
Sodium-ion batteries(SIBs)have emerged as a promising alternative to lithium-ion batteries for sustainable energy storage.Its widespread availability and lower cost make it an attractive option for future energy stora...Sodium-ion batteries(SIBs)have emerged as a promising alternative to lithium-ion batteries for sustainable energy storage.Its widespread availability and lower cost make it an attractive option for future energy storage solutions.This review provides an analysis of the key materials in SIBs,including cathodes,anodes,electrolytes,and separators,highlighting recent advancements and existing challenges.The anode materials reviewed in this article include carbonaceous materials,metal alloys,and organic materials.These anode materials face constraints such as significant volume expansion and poor ionic conductivity.The cathode materials discussed include transition metal oxides,polyanionic compounds,and Prussian Blue analogues,which encounter challenges related to structural stability and ionic conductivity.Exploring the combination of these materials presents a promising strategy for producing high-performance sodium-ion batteries with the potential for future energy storage.The review also discusses electrolyte and separator materials,examining the advantages and disadvantages of liquid,solid,and semi-solid electrolytes.Finally,it addresses the packaging and safety challenges of SIBs.展开更多
Transition metal oxides hold promise as electrode materials for energy-storage devices such as batteries and supercapacitors.However,achieving ideal electrode materials with high capacity,long-term cycling stability,a...Transition metal oxides hold promise as electrode materials for energy-storage devices such as batteries and supercapacitors.However,achieving ideal electrode materials with high capacity,long-term cycling stability,and superb rate capability remains a challenge.In this study,we present a self-assembled heterogeneous structure consisting of TiO_(2)nanosheets derived from Ti_(3)C_(2)T_(x)MXene and reduced graphene oxide.This structure facilitates the formation of heterogeneous structures while establishing a conductive network.The restacking of porous TiO_(2)nanosheets and reduced graphene oxide within the heterostructure results in high porosity and excellent conductivity.Due to enhanced electron and Na^(+)transfer,as well as improved structural stability during the Na^(+)insertion/extraction process,this heterogeneous structure exhibited exceptional Na^(+)storage performance.Specifically,it exhibits a long-term cycling stability(217 mAh g^(−1)at 10 C,5000 cycles)and an ultrahigh rate capability(135 mAh g^(-1),40 C).Analysis of electrode reaction kinetics suggests that Na^(+)storage in the heterostructure is predominantly governed by a surface-controlled process.Our results provide a promising strategy for utilizing self-assembled heterostructures in advanced energy storage applications.展开更多
β-amyloid(Aβ)deposits are the leading cause of Alzheimer's disease.Many studies have confirmed that transthyretin(TTR)inhibits the cytotoxicity of Aβoligomers(AβOs)with various species(oligomers and protofibri...β-amyloid(Aβ)deposits are the leading cause of Alzheimer's disease.Many studies have confirmed that transthyretin(TTR)inhibits the cytotoxicity of Aβoligomers(AβOs)with various species(oligomers and protofibrils,but not monomers)through their interactions.Here,we investigated the mechanisms of interactions between the TTR tetramer and various Aβspecies,including two monomers with different morphologies and four oligomers with different molecular weights,by employing molecular dynamics simulations.From these results,we propose a clear interaction scenario:upon AβO binding,the dimer-dimer distance of TTR increases and the binding energy decreases,indicating an unfavorable effect on the TTR stability.Moreover,the larger the molecular weight(MW)of AβO,the greater the effect of interaction between the TTR tetramer and Aβoligomer,and consequently the worse the TTR stability.In turn,Aβ–Aβintermolecular distances in AβO grow and the hydrophobic solvent-accessible surface area(SASA)increases,whereas the number of intermolecular hydrogen bonds decreases,indicating AβO disaggregation induced by the TTR binding.Moreover,a trend is observed for the disaggregation to increase as the MW of the AβO species increases.Finally,we reveal that conformations rich in helical sections rather than the semi-extended conformation are favored upon binding with TTR.Overall,this study provides a comprehensive molecular-level insight to better understand the mechanism and principles of interaction between the TTR tetramer and AβOs.展开更多
Electrocatalytic reduction of nitrates plays a crucial role in ammonia(NH3)production.In this study,a novel cuprous oxide/graphdiyne(Cu2O/GDY)electrocatalyst was synthesized by growing Cu2O/GDY on a Cu substrate with ...Electrocatalytic reduction of nitrates plays a crucial role in ammonia(NH3)production.In this study,a novel cuprous oxide/graphdiyne(Cu2O/GDY)electrocatalyst was synthesized by growing Cu2O/GDY on a Cu substrate with a porous architecture capable of increasing the number of active sites and enhancing mass transfer ability.The sp-C–Cu bonds between Cu2O and GDY facilitate rapid charge transfer and promote direct electron transport from active sites to reaction intermediates.Consequently,the electrocatalyst exhibits high NH_(3)production performance with a yield rate(YNH3)of 652.82µmol h^(-1)cm^(-2)and Faradaic efficiency of 82.98%at-1.8 V(vs.SCE)under ambient conditions in an aqueous solution.This work introduces a novel and efficient approach for the in situ fabrication of self-supported heterostructures,thereby enabling high-performance ammonia production under ambient conditions.展开更多
Perovskite solar cells(PSCs)have emerged as a transformative technology in photovoltaics due to their high absorption coefficient and potential for low-cost,high-efficiency solar energy conversion.Optimizing the elect...Perovskite solar cells(PSCs)have emerged as a transformative technology in photovoltaics due to their high absorption coefficient and potential for low-cost,high-efficiency solar energy conversion.Optimizing the electron transport layer(ETL)remains a critical challenge,as it significantly influences charge carrier dynamics and overall device performance.This study explores strontium(Sr)doped hydrothermally synthesized molybdenum diselenide(MoSe_(2))as ETL to enhance the power conversation efficiency(PCE)of the PSCs.The encapsulation of Sr within MoSe_(2)(Sr@MoSe_(2))demonstrates a notable enhancement in photovoltaic parameters,achieving a short-circuit current density(J_(sc))of 13.73 mA/cm^(2),an open-circuit voltage(V_(oc))of 1.04 V,a fill factor(FF)of 82%,and a power conversion efficiency(PCE)of 10.12%,compared to pristine MoSe_(2)(J_(sc)=11.05 mA/cm^(2),V_(oc)=1.03 V,FF=70%,PCE=7.97%).Transient photovoltage and impedance spectroscopy analysis confirm that Sr modification facilitates improved charge extraction and reduces recombination losses at the ETL perovskite interface.These results underscore the effectiveness of Sr incorporation in enhancing both the efficiency and operational stability of perovskite solar cells.This work not only provides a promising strategy for ETL optimization but also opens avenues for future research into tailored material engineering for next-generation photovoltaic devices.展开更多
文摘The use of lithium-ion batteries in portable electronic devices and electric vehicles has become well-established,and battery demand is rapidly increasing annually.While technological innovations in electrode materials and battery performance have been pursued,the environmental threats and resource wastage posed by the resulting surge in used batteries have been overlooked.Spent batteries are technically inoperable but contain excess metal inside the structure,making recycling essential for environmental protection and recovery of scarce resources.The battery recycling industry has gradually emerged under the influence of government implementation and ecological protection trends.However,the annual recycling volume is still insufficient compared to the output volume of used batteries.Therefore,more recycling plants and advanced technologies are imperative to improve recycling efficiency.This article summarizes pretreatment,pyrometallurgical,and hydrometallurgical processes and technologies in three major parts,analyzes their applicability and environmental friendliness using industrial examples,highlights their technical shortcomings and problems,and emphasizes the bright future of battery recycling.
文摘Graphdiyne(GDY),a rising star of carbon allotrope with sp-/sp?.hybridized one-atom-thick all-carbon two-dimensional(2D)network,has shown numerous unique structure and fascinating properties.Since the first successful synthesis of GDY in 2010,GDY research has made a series of great progresses,and promoted the fundamental researches and practical applications in various fields of chemistry,physics,information science,material science,life science and environmental science and so on.
基金the Center for Computational Sciences and Simulation(CCSS)at Universität Duisburg-Essen and provided the supercomputer magnitude(DFG grants INST 20876/209-1 FUGG and INST 20876/243-1 FUGG)at the Zentrum fur Informations-und Mediendienste(ZIM).
文摘This study reports the synthesis of three sets of high-performance manganese(Mn)-doped Co_(3)O_(4)porous nanocrystals(PNCs)(5%Mn@Co_(3)O_(4),10%Mn@Co_(3)O_(4),and 15%Mn@Co_(3)O_(4))using a simple chemical co-precipitation method.These catalysts were then used for the catalytic oxidation of carbon monoxide(CO).This investigation focused on the effects of Co^(2+)or Co^(3+)substitution by Mn^(2+)or Mn^(3+)within the Co_(3)O_(4)matrix on various properties of the PNCs,including their physicochemical characteristics,morphology,microstructure,reducibility,thermal stability,and their impact on the catalytic performance.Comprehensive characterization using techniques such as X-ray diffraction(XRD),scanning electron microscopy(SEM),Brunauer-Emmett-Teller(BET)analysis,X-ray photoelectron spectroscopy(XPS),Hydrogen-Temperature Programmed Reduction and(H_(2)-TPR),was employed to elucidate the factors responsible for effective CO oxidation.Compared to pure Mn3 O4 and Co_(3)O_(4),the Mn@Co_(3)O_(4)PNCs catalysts exhibited a more controllable microstructure and better dispersion of the active phase.The 5%Mn@Co_(3)O_(4)catalyst demonstrated the highest activity,achieving 90%CO oxidation at 197°C.This superior performance is attributed to its large specific surface area,excellent reduction capacity,and abundant oxygen species and vacancies.H_(2)-TPR and XPS analyses provided further insights into the reaction mechanism.Density functional theory calculations showed that the formation of bulk oxygen vacancies is more favorable when Mn^(3+)is substituted at the Co^(2+)sites.Overall,the chemical coprecipitation method offers a straightforward and cost-effective approach for producing Mn@Co_(3)O_(4)catalysts suitable for CO abatement in exhaust and flue gases.
基金This research was supported by the National Key R&D Program of China(2022YFB3506300)National Natural Science Foundation of China(No.52176185)+2 种基金Guangdong-Foshan Joint Fund(2023A1515140091)Guangdong High-level Innovation Institute project(2021B090905000)Ningbo Yongjiang Talent Introduction Program(2023A-184-G)Eastern Institute of Technology,Ningbo.
文摘Interfacial engineering,particularly the design of artificial solid-electrolyte interphases(SEIs),has been successfully applied in all-solid-state batteries(ASSLBs)for industrial applications.However,a fundamental understanding of the synthesis and mechanism models of artificial SEIs in all-solid-state Li-ion batteries remains limited.In this review,recent advances in designing and synthesizing artificial SEIs for ASSLBs to solve interfacial issues are thoroughly discussed,covering three main preparation methods and their technical routes:1)atomic layer deposition,2)sol-gel methods,and 3)mechanical ball-milling methods.Moreover,advanced ex-situ characterization techniques for artificial SEIs are comprehensively summarized.Finally,this review provides perspectives on techniques for the interface engineering of artificial SEIs for ASSLBs,with focus on promising methods for industrial applications.
基金The authors extend their sincere appreciation to the Researchers Supporting Project No.RSP2025R370,King Saud University,Riyadh,Saudi ArabiaDr.Bidhan Pandit acknowledges the Iberdrola Foundation and European Commission MSCA-E4F program(Horizon 2020,Grant No.101034297)for support.
文摘This study focused on the synthesis of cerium oxide(CeO_(2))electrodes using the Successive Ionic Layer Adsorption and Reaction(SILAR)method to enhance supercapacitor performance.The fabricated thin films exhibited a face-centered cubic structure of cerium oxide with a distinctive cauliflower-like nanostructure.This unique morphology increased the surface area,facilitated efficient ion diffusion,and significantly improved the electrochemical performance.The CeO_(2)electrodes achieved a high specific capacitance of 659 F/g at a scan rate of 5 mV/s,as measured by cyclic voltammetry.The electrodes delivered a maximum energy density of 64 Wh/kg and a power density of 3499 W/kg.These results demonstrated that CeO_(2)thin films are promising candidates for advanced supercapacitors and hold great potential for future energy storage applications.
基金financial support from the National Natural Science Foundation of China(22379078).
文摘Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction(ORR)are indispensable for future fuel cells.Herein,we describe a heterostructure of Pd nanocrystals(PdNCs)on N-doped Ag nanowires(NWs)synthesized using a direct epitaxial growth strategy with a Pd loading of only 9.5 wt.%.The PdAg bimetallic heterostructure showed the highest mass activity among reported PdAg-based ORR electrocatalysts and exhibited excellent stability,with only a 1.5 mV decay in the half-wave potential even after 20000 cycles of continuous testing.The remarkably enhanced activity and durability can be attributed to the distinct advantages of the ultrasmall PdNCs,cocatalysts of N-doped AgNWs,and their heterointerfaces.This work reveals that the epitaxial growth of a heterostructure on a stable support is a promising strategy for promoting catalytic performance.
基金supported by the Joint Funds of the National Natural Science Foundation of China(No.U22A20140)University of Jinan Disciplinary Cross-Convergence Construction Project 2023(No.XKJC-202309)+4 种基金Jinan City-School Integration Development Strategy Project(No.JNSX2023015)National Natural Science Foundation of China(No.22409071)Natural Foundation of Shandong Province(No.ZR2024QB120)Youth Innovation Group Plan of Shandong Province(No.2024KJG046)Higher-Level Talent Initial Scientific Research and Discipline Construction Fund(511/1009530).
文摘Nickel/cobalt-based materials are promising cathodes owing to the high redox potential,high specific capacity,and long cycling performance.However,with the mass-loading of the electrode increasing,it greatly hinders the ion diffusion and charge transport,resulting in serious decrease of the electrode capacity.Herein,a hierarchical nickel-cobalt-based porous nanoflower structure(NiCo-Nanoflower)composed of numerous ultrathin nanosheets is synthesized,which significantly enhances the surface area and provides additional active sites.Besides,the abundant oxygen defects in NiCo-Nanoflower significantly enhance its electrical conductivity.Therefore,the NiCo-Nanoflower electrode exhibits a high reversible capacity of up to 210.4 mAh g^(−1)at 0.5 A g^(−1)and excellent rate retention of 180.4 mAh g^(−1)at 8 A g^(−1)(104 mA cm^(−2))even under high areal mass loading of 13 mg cm^(−2).Upon assembly in a NiCo//Zn battery system,the configuration demonstrates exceptional electrochemical stability,maintaining 74.3%capacity retention after 5000 cycles.This work demonstrates that NiCo-Nanoflower,equipped with three-dimensional microstructure and oxygen-enriched defects,holds significant potential for application in high-mass-loading cathodes for alkaline aqueous zinc batteries.
基金supported by the National Natural Science Foundation of China(U21A2077)Natural Science Foundation of Shandong Province(ZR2021ZD05)Taishan Scholars Program of Shandong Province(ts20190908).
文摘Positive electrodes play a decisive role in exploring the Zn^(2+)storage mechanism and improving the electrochemical performance of aqueous Zn-ion batteries(AZIBs).Feasible design and preparation of cathode materials have been crucial for AZIBs in recent years.Herein,taking the advantage of the tunnel structure of VO_(2),which can withstand volume change during charging/discharging,VO_(2)doped with Ce ions is synthesized by a simple one-step hydrothermal method and oxygen vacancies are synchronously generated during synthesis.It delivers a capacity of 158.5 mAh g^(−1)at the current density of 5 A g^(−1)after 1000 cycles and exhibits an excellent energy density of 312.8 Wh kg^(−1)at the power density of 142 W kg^(−1).The structural modification and prospect of enhancing its conductivity by doping with rare-earth metals and introducing oxygen vacancies may aid in improving the stability of AZIBs in the future.
基金financial support provided by the National Natural Science Foundation of China(51801108)the Shandong Provincial Natural Science Foundation(ZR2023ME072)+3 种基金the Key Research and Development Program of Shandong Province(2019GGX103048)support from the Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology(BM2012110)the Open Foundation of Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials(2022GXYSOF16)the Open Fundation of the National Engineering Laboratory of Circular Economy at Sichuan University of Science and Engineering(XHJJ-2304).
文摘Metal-cation doping is a fundamental strategy for enhancing catalyst performance.Fe-doped Ni_(0.85)Se/NF(Fe-Ni_(0.85)Se/NF)nanoparticles were prepared at 80°C via Fe^(2+)etching method.The addition of Fe altered the coordination environment of the Ni species along with the catalyst's morphology,creating additional active sites.Notably,the synergistic interaction between the bimetallic components augmented the built-in activity and accelerated reaction kinetics.The Fe-Ni_(0.85)Se/NF electrocatalysts demonstrated remarkable catalytic activity for the oxygen evolution reaction(OER),with an acceptable overpotential of 276 mV and a Tafel slope of 58.1 mV dec^(−1)at 100 mA cm^(−2).Moreover,they demonstrated exceptional durability.In situ Raman and X-ray photoelectron spectroscopy(XPS)analyses showed that the excellent OER performance stemmed from the reconstruction-induced hydroxyl oxide.This study offers a novel approach for streamlining the synthesis procedures and reducing the experimental costs for developing high-efficiency electrocatalysts.
文摘Nanomaterials have emerged as an active area of research.This is because of their broad spectrum of applications such as sensors,white light emitting diodes(LEDs),electronic displays,and other optoelectronic devices in the optics and electronic industries owing to their size-and shape-dependent properties.The synthesis technique plays a crucial role in tuning the size and shape of the materials.Herein,we briefly describe these nanomaterials'fundamental aspects,properties,and applications.Various nanomaterial synthesis methods are discussed.Their advantages and disadvantages are highlighted in conjunction with the criteria for selecting a synthesis method.The principle underlying the sonochemical method and its applicability in synthesizing diverse sub-15 nm size nanoparticles(NPs)are presented.The main objective of this article is to review recent studies on lanthanide-doped nanophosphors and the various parameters that play key roles in achieving optimum luminescence emission.Both down-conversion and up-conversion mechanisms are discussed.The importance of the combinations and concentrations of the synthesizer/activator,color tuning,and host material are emphasized.
基金supported by the Russian Science Foundation(Grant No.23-73-30007).
文摘Herein N_(2)O decomposition over LaMO_(3)(M:Fe,Co,Ni)mixed oxides with perovskite structures has been optimized.The influence of the organic additive and the additive to(La^(3+)+Co^(2+))molar ratio on phase composition,particle aggregate size,textural properties,and catalytic activity of LaCoO_(3)has been determined for the first time.Glycine improved the phase purity of LaCoO_(3),enhanced the specific surface area and pore volume,and shifted the pore size distribution to the wider mesopore and macropore regions.LaCoO_(3)showed better activity than LaFeO_(3)and LaNiO_(3)owing to the greater reducibility of Co^(3+)and its large specific surface area,and correlations between the La^(3+):Co^(2+)molar ratio,particle aggregate size,pore volume for pores larger than 25 nm,and N_(2)O decomposition activity for LaCoO_(3)have been determined.Changes in the LaCoO_(3)textural properties following catalytic experiments with 10%water vapor added to the feed have also been analyzed here-in.
基金supported by the Vietnam National Foundation for Science and Technology Development(NAFOSTED)under grant number 103.02-2021.70.
文摘The evolution of the structural and electronic properties of the van der Waals layered ferromagnet CrBrs across the semiconductor-metal transition was investigated using X-ray powder diffraction and Raman spectroscopy at high pressures up to 38 GPa and by density functional theory(DFT)calculations at high pressures up to 120 GPa.The pressure behavior of the structural parameters and vibrational modes revealed a crossover from the quasi-two-dimensional system with weakly interacting atomic layers to the three-dimensional-like system with strongly interacting layers at P~15 GPa.This resulted in a significant modification of the pressure coefficients of the lattice parameters and interlayer distances.DFT calculations using first-principles generalized gradient ap-proximations of the Perdew-Burke-Ernzerhof(PBE)and Perdew-Burke-Ernzerhof-sol(PBEsol)functionals qual-itatively reproduced the high pressure effects on the structural and electronic properties of CrBr3,with more accurately results obtained by PBEsol.The relative increase of the binding energy absolute value between the van der Waals layers by 75 times in the pressure range up to 60 GPa was evaluated.Band gap closure associ-ated with the semiconductor-metal transition was found at P=6o GPa,which is higher than the experimentally determined value.
基金the ITB Research Fund 2023 scheme of the Institut Teknologi Bandung(PN-6-02-2023).
文摘The field of tissue engineering has witnessed significant progress with the emergence of three-dimensional(3D)printing technologies.The ability to fabricate precise structures with complex geometries combined with the in-tegration of two-dimensional(2D)materials,including graphene,graphene oxide,and transition metal dichalco-genides,has provided novel opportunities.This integration enables the fabrication of functional structures with tailored properties,leveraging the exceptional mechanical,electrical,and chemical characteristics of these mate-rials,in conjunction with the design flexibility offered by 3D printing.Herein,we review the recent advancements in the selection of appropriate 2D materials,diverse 3D printing methods employed for integration,and charac-terization techniques used to evaluate the performance of the resulting constructs.The successful integration of 3D printing and 2D materials holds immense potential for advancing tissue engineering and paving the way for personalized medicine,regenerative therapies,and point-of-care diagnostics.
基金supported by the Natural Science Foundation of Shan-dong Province,China(Grant No.:ZR2022MB073).
文摘Enhancing the activity ofα-secretase has emerged as a potential therapeutic strategy for treating Alzheimer’s disease(AD).The exploration of small molecules that can enhance α-secretase activity and their mechanisms provides insights for future AD treatments and the development of novel activators.In this study,ADAM10,a major α-secretase,is used as a model and is bound with the ligands(−)-epigallocatechin-3-gallate(EGCG)and ferulic acid(FA)in a 1:2 ratio(ADAM10:EGCG/FA=1:2/2)and equimolar ratio(ADAM10:EGCG:FA=1:1:1)to investigate the effects on ADAM10 activation and reveal the synergistic mechanism of the EGCG and FA combi-nation.The activity of ADAM10 was enhanced by the combination of EGCG and FA,compared to that achieved with EGCG or FA alone,where EGCG plays a dominant role,whereas FA plays a supportive role.The combined use of EGCG induces strong hydrophobic interactions between ADAM10 and FA,causing FA to dissociate from the S1 domain,thereby preventing the inhibition of ADAM10 activity by pure FA.The presence of FA allows EGCG to bind more precisely within the active cavity of ADAM10,thereby increasing the binding strength.Overall,the combination of EGCG and FA significantly increased the distance between the S1 domain and the cysteine-rich C-terminus,further opening up the cavity containing the active sites,consequently exposing more active sites and enhancing the activity of ADAM10.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korean Government(MSIT)(NRF-2022R1A2C2093415)partially supported by the Korea Basic Science Institute(National Research Facilities and Equipment Center)grant funded by the Ministry of Education(2022R1A6C101A751).
文摘Graphdiyne(GDY)is a novel carbon allotrope that has attracted significant attention owing to its unique structural and electronic properties.Comprising sp2-and sp-hybridized carbon atoms,GDY forms a two-dimensional structure via conjugated-C=C=C=C-linkages.These linkages result in a highlyπ-conjugated system with a natural bandgap that distinguishes GDY from other carbon materials such as graphene.This review systematically provides an overview of GDY,with a focus on its intrinsic properties and synthesis strategies,techniques to characterize its structure,and recent advanced applications.First,we summarize several GDY synthesis strategies,providing a detailed discussion of the advantages and disadvantages associated with each approach.Subsequently,several practical and precise techniques,including solid nuclear magnetic resonance,Raman,Fourier-transform infrared,and X-ray photoelectron spectroscopies,transmission electron microscopy,and selected area electron diffraction,to characterize the GDY structure are discussed.Next,we elucidate the unique structural and electronic properties of GDY using both theoretical frameworks and experimental methodologies.Finally,we comprehensively discuss the recent applications of GDY in various fields,including biomedicine,electronics,optoelectronics,energy storage,and catalysis.
基金supported by the Centre for Higher Education Funding and Assessment(PPAPT),the Ministry of Higher Education,Science,and Technology of the Republic of Indonesia,for providing the Indonesia Education Scholarship(BPI)funded by the Indonesia Endowment Fund for Education Agency(LPDP).
文摘Sodium-ion batteries(SIBs)have emerged as a promising alternative to lithium-ion batteries for sustainable energy storage.Its widespread availability and lower cost make it an attractive option for future energy storage solutions.This review provides an analysis of the key materials in SIBs,including cathodes,anodes,electrolytes,and separators,highlighting recent advancements and existing challenges.The anode materials reviewed in this article include carbonaceous materials,metal alloys,and organic materials.These anode materials face constraints such as significant volume expansion and poor ionic conductivity.The cathode materials discussed include transition metal oxides,polyanionic compounds,and Prussian Blue analogues,which encounter challenges related to structural stability and ionic conductivity.Exploring the combination of these materials presents a promising strategy for producing high-performance sodium-ion batteries with the potential for future energy storage.The review also discusses electrolyte and separator materials,examining the advantages and disadvantages of liquid,solid,and semi-solid electrolytes.Finally,it addresses the packaging and safety challenges of SIBs.
文摘Transition metal oxides hold promise as electrode materials for energy-storage devices such as batteries and supercapacitors.However,achieving ideal electrode materials with high capacity,long-term cycling stability,and superb rate capability remains a challenge.In this study,we present a self-assembled heterogeneous structure consisting of TiO_(2)nanosheets derived from Ti_(3)C_(2)T_(x)MXene and reduced graphene oxide.This structure facilitates the formation of heterogeneous structures while establishing a conductive network.The restacking of porous TiO_(2)nanosheets and reduced graphene oxide within the heterostructure results in high porosity and excellent conductivity.Due to enhanced electron and Na^(+)transfer,as well as improved structural stability during the Na^(+)insertion/extraction process,this heterogeneous structure exhibited exceptional Na^(+)storage performance.Specifically,it exhibits a long-term cycling stability(217 mAh g^(−1)at 10 C,5000 cycles)and an ultrahigh rate capability(135 mAh g^(-1),40 C).Analysis of electrode reaction kinetics suggests that Na^(+)storage in the heterostructure is predominantly governed by a surface-controlled process.Our results provide a promising strategy for utilizing self-assembled heterostructures in advanced energy storage applications.
基金supported by the Shandong Provincial Natural Science Foundation(ZR2022MB073)of China.
文摘β-amyloid(Aβ)deposits are the leading cause of Alzheimer's disease.Many studies have confirmed that transthyretin(TTR)inhibits the cytotoxicity of Aβoligomers(AβOs)with various species(oligomers and protofibrils,but not monomers)through their interactions.Here,we investigated the mechanisms of interactions between the TTR tetramer and various Aβspecies,including two monomers with different morphologies and four oligomers with different molecular weights,by employing molecular dynamics simulations.From these results,we propose a clear interaction scenario:upon AβO binding,the dimer-dimer distance of TTR increases and the binding energy decreases,indicating an unfavorable effect on the TTR stability.Moreover,the larger the molecular weight(MW)of AβO,the greater the effect of interaction between the TTR tetramer and Aβoligomer,and consequently the worse the TTR stability.In turn,Aβ–Aβintermolecular distances in AβO grow and the hydrophobic solvent-accessible surface area(SASA)increases,whereas the number of intermolecular hydrogen bonds decreases,indicating AβO disaggregation induced by the TTR binding.Moreover,a trend is observed for the disaggregation to increase as the MW of the AβO species increases.Finally,we reveal that conformations rich in helical sections rather than the semi-extended conformation are favored upon binding with TTR.Overall,this study provides a comprehensive molecular-level insight to better understand the mechanism and principles of interaction between the TTR tetramer and AβOs.
基金supported by the National Key Research and Development Project of China(2024YFA1509403,2022YFA1204503)Basic Science Center Project of the National Natural Science Foundation of China(22388101)+1 种基金Taishan Scholars Youth Expert Program of Shandong Province(tsqn201909050)Natural Science Foundation of Shandong Province(ZR2021JQ07,ZR2024ZD02).
文摘Electrocatalytic reduction of nitrates plays a crucial role in ammonia(NH3)production.In this study,a novel cuprous oxide/graphdiyne(Cu2O/GDY)electrocatalyst was synthesized by growing Cu2O/GDY on a Cu substrate with a porous architecture capable of increasing the number of active sites and enhancing mass transfer ability.The sp-C–Cu bonds between Cu2O and GDY facilitate rapid charge transfer and promote direct electron transport from active sites to reaction intermediates.Consequently,the electrocatalyst exhibits high NH_(3)production performance with a yield rate(YNH3)of 652.82µmol h^(-1)cm^(-2)and Faradaic efficiency of 82.98%at-1.8 V(vs.SCE)under ambient conditions in an aqueous solution.This work introduces a novel and efficient approach for the in situ fabrication of self-supported heterostructures,thereby enabling high-performance ammonia production under ambient conditions.
文摘Perovskite solar cells(PSCs)have emerged as a transformative technology in photovoltaics due to their high absorption coefficient and potential for low-cost,high-efficiency solar energy conversion.Optimizing the electron transport layer(ETL)remains a critical challenge,as it significantly influences charge carrier dynamics and overall device performance.This study explores strontium(Sr)doped hydrothermally synthesized molybdenum diselenide(MoSe_(2))as ETL to enhance the power conversation efficiency(PCE)of the PSCs.The encapsulation of Sr within MoSe_(2)(Sr@MoSe_(2))demonstrates a notable enhancement in photovoltaic parameters,achieving a short-circuit current density(J_(sc))of 13.73 mA/cm^(2),an open-circuit voltage(V_(oc))of 1.04 V,a fill factor(FF)of 82%,and a power conversion efficiency(PCE)of 10.12%,compared to pristine MoSe_(2)(J_(sc)=11.05 mA/cm^(2),V_(oc)=1.03 V,FF=70%,PCE=7.97%).Transient photovoltage and impedance spectroscopy analysis confirm that Sr modification facilitates improved charge extraction and reduces recombination losses at the ETL perovskite interface.These results underscore the effectiveness of Sr incorporation in enhancing both the efficiency and operational stability of perovskite solar cells.This work not only provides a promising strategy for ETL optimization but also opens avenues for future research into tailored material engineering for next-generation photovoltaic devices.
