AIMTo retrospectively evaluate the safety and feasibility of a new modified laparoscopic Sugarbaker repair in patients with parastomal hernias.METHODSA retrospective study was performed to analyze eight patients who u...AIMTo retrospectively evaluate the safety and feasibility of a new modified laparoscopic Sugarbaker repair in patients with parastomal hernias.METHODSA retrospective study was performed to analyze eight patients who underwent parastomal hernia repair between June 2016 and January 2018. All of these patients received modified laparoscopic Sugarbakerhernia repair treatment. This modifed technique included an innovative three-point anchoring and complete su-turing technique to fix the mesh. All procedures were performed by a skilled hernia surgeon. Demographic data and perioperative outcomes were collected to eva-luate the safety and effcacy of this modifed technique.RESULTSOf these eight patients, two had concomitant incisional hernias. All the hernias were repaired by the modifed laparoscopic Sugarbaker technique with no conversion to laparotomy. Three patients had in-situ reconstruc-tion of intestinal stoma. The median mesh size was 300 cm2, and the mean operative time was 205.6 min. The mean postoperative hospitalization time was 10.4 d, with a median pain score of 1 （visual analog scale method） at postoperative day 1. Two patientsdeveloped postoperative complications. One patient had a pocket of effusion surrounding the biologic mesh, and one patient experienced an infection around the reconstructed stoma. Both patients recovered after conservative management. There was no recurrence during the follow-up period （6-22 mo, average 13 mo）.CONCLUSIONThe modifed laparoscopic Sugarbaker repair could fx the mesh reliably with mild postoperative pain and a low recurrence rate. The technique is safe and feasible for parastomal hernias.展开更多
materials,despite its intensive application in Li/Na-ion batteries.The existing mechanisms of AVE's effects mainly focus on charge transfer but fail to clarify other critical issues.Here,we propose a new insight i...materials,despite its intensive application in Li/Na-ion batteries.The existing mechanisms of AVE's effects mainly focus on charge transfer but fail to clarify other critical issues.Here,we propose a new insight into AVE's effect on K-ion storage by introducing Te vacancies into a representative conversion-type NiTe.In addition to existing mechanisms,we demonstrate Te vacancies play three other unprecedented roles.(1)Te vacancies minimize the intrinsic volume strain from 15%to 6%,significantly suppressing anode pulverization and element dissolution.(2)Te vacancies induce the in-situ formation of a thin yet robust KF-based inorganic-rich solid electrolyte interphase,further accommodating volume strain and element dissolution.(3)Te vacancies reduce Ni-Te bond lengths and promote K-ion diffusion by modulating local atomic structure.Therefore,NiTe_(1-x)delivers an outstanding cycling performance(229.5 mAh g1 at 3.0 A g^(-1)for 1350 cycles)and rate capability(171.7 mAh g^(-1)at 5.0 A g^(-1)1).Furthermore,NiTe_(1-x)-based full cells showcase a remarkable energy density of 200.4 Wh kg^(-1).This work comprehensively elucidates the AVE's effects on alkali-ion storage,promoting the development of advanced conversion-type anode materials for practical applications.展开更多
The response of lake environments in arid Central Asia to climate change during the Late Holocene over the centennial to millennial timescales remains contentious.The reason that primarily paleoenvironmental proxies d...The response of lake environments in arid Central Asia to climate change during the Late Holocene over the centennial to millennial timescales remains contentious.The reason that primarily paleoenvironmental proxies diverse and the scarcity of accurate quantitative reconstruction records.In this study,we employed diatoms and pollen records from lacustrine sediment in the Aibi Lake of Southwest Junggar Basin to quantitatively reconstruct salinity and watershed precipitation amounts while exploring the associated forcing mechanisms.The results indicate that Aibi Lake salinity varied between 2 and 47 g/L during the Late Holocene Period,indicating a generally brackish environment,and corresponding to prevailing Tryblionella granulata diatom in the lake basin.Westerly-dominated annual precipitation varied between 250 and 320 mm during the Late Holocene Period in the basin,exhibiting a generally semi-arid environment and prevailing desert steppe vegetation.The Aibi Lake has a low salinity of average value of~15 g/L and exhibits elevated precipitation(average value of~280 mm)during the periods of the 2900-1990,1570-1140,and 590-120 cal yr BP.The reconstructed precipitation and salinity exhibit a periodicity of~200 years,which is consistent with the cycle of phase changes of the North Atlantic oscillation(NAO)and total solar irradiance(TSI).This correlation suggests that variations in NOA and TSI significantly influence the precipitation and salinity changes in Central Asia over centennial to millennial timescales.展开更多
Fluoropolymers promise all-solid-state lithium metal batteries(ASLMBs)but suffer from two critical challenges.The first is the trade-off between ionic conductivity(σ)and lithium anode reactions,closely related to hig...Fluoropolymers promise all-solid-state lithium metal batteries(ASLMBs)but suffer from two critical challenges.The first is the trade-off between ionic conductivity(σ)and lithium anode reactions,closely related to high-content residual solvents.The second,usually consciously overlooked,is the fluoropolymer's inherent instability against alkaline lithium anodes.Here,we propose indium-based metal-organic frameworks(In-MOFs)as a multifunctional promoter to simultaneously address these two challenges,using poly(vinylidene fluoride-hexafluoropropylene)(PVH)as the typical fluoropolymer.In-MOF plays a trio:(1)adsorbing and converting free residual solvents into bonded states to prevent their side reactions with lithium anodes while retaining their advantages on Li~+transport;(2)forming inorganic-rich solid electrolyte interphase layers to prevent PVH from reacting with lithium anodes and promote uniform lithium deposition without dendrite growth;(3)reducing PVH crystallinity and promoting Li-salt dissociation.Therefore,the resulting PVH/In-MOF(PVH-IM)showcases excellent electrochemical stability against lithium anodes,delivering a 5550 h cycling at 0.2 m A cm^(-2)with a remarkable cumulative lithium deposition capacity of 1110 m Ah cm^(-2).It also exhibits an ultrahighσof 1.23×10^(-3)S cm^(-1)at 25℃.Moreover,all-solid-state LiFePO_4|PVH-IM|Li full cells show outstanding rate capability and cyclability(80.0%capacity retention after 280 cycles at 0.5C),demonstrating high potential for practical ASLMBs.展开更多
为了探究栽培模式对阳光玫瑰葡萄花后12~17周挥发性风味物质的影响,采用顶空固相微萃取结合气相色谱-质谱联用(head space phase microextraction gas chromatography-mass spectrometry,HS-SPME-GC-MS)技术对促早栽培和避雨栽培下阳光...为了探究栽培模式对阳光玫瑰葡萄花后12~17周挥发性风味物质的影响,采用顶空固相微萃取结合气相色谱-质谱联用(head space phase microextraction gas chromatography-mass spectrometry,HS-SPME-GC-MS)技术对促早栽培和避雨栽培下阳光玫瑰葡萄挥发性风味物质进行检测。结果表明,2种栽培模式下的葡萄中共检测出104种挥发性物质,其中,醇类13种、醛类20种、酮类18种、酯类17种、烯烃类9种、烷类13种、醚类3种、酸类4种、其他化合物7种。促早栽培和避雨栽培模式下的葡萄中均检测出醇类6种、醛类8种、酮类3种、酯类3种、烯烃类1种;促早栽培模式下醇类、酮类、酯类、醛类挥发性风味物质相对含量显著高于避雨栽培模式(P<0.05);酸类仅在避雨栽培模式检测出。相较于避雨栽培,促早栽培更有利于提高阳光玫瑰葡萄果实品质,研究结果为提高阳光玫瑰葡萄果实品质的栽培及管理方式提供参考。展开更多
The ineluctable introduction of lithium salt to polymer solid-state electrolytes incurs a compromise between strength,ionic conductivity,and thickness.Here,we propose Al_(2)O_(3)-coated polyimide(AO/PI)porous film as ...The ineluctable introduction of lithium salt to polymer solid-state electrolytes incurs a compromise between strength,ionic conductivity,and thickness.Here,we propose Al_(2)O_(3)-coated polyimide(AO/PI)porous film as a high-strength substrate to support fast-ion-conducting polymer-in-salt(PIS)solid-state electrolytes,aiming to suppress lithium dendrite growth and improve full-cell performance.The Al_(2)O_(3)coating layer not only refines the wettability of polyimide porous film to PIS,but also performs as a high modulus protective layer to suppress the growth of lithium dendrites.The resulting PI/AO@PIS exhibits a small thickness of only 35μm with an outstanding tensile strength of 11.3 MPa and Young's modulus of 537.6 MPa.In addition,the PI/AO@PIS delivers a high ionic conductivity of 0.1 m S/cm at 25°C.As a result,the PI/AO@PIS enables symmetric Li cells to achieve exceptional cyclability for over 1000 h at 0.1 m A/cm2without noticeable lithium dendrite formation.Moreover,the PI/AO@PIS-based LiFePO4||Li full cells demonstrate outstanding rate performance(125.7 m Ah/g at 5 C)and impressive cycling stability(96.1%capacity retention at 1 C after 200 cycles).This work highlights the efficacy of enhancing the mechanical properties of polymer matrices and extending cell performance through the incorporation of a dense inorganic interface layer.展开更多
Composite solid electrolytes(CSEs)are promising for solid-state Li metal batteries but suffer from inferior room-temperature ionic conductivity due to sluggish ion transport and high cost due to expensive active ceram...Composite solid electrolytes(CSEs)are promising for solid-state Li metal batteries but suffer from inferior room-temperature ionic conductivity due to sluggish ion transport and high cost due to expensive active ceramic fillers.Here,a host–vip inversion engineering strategy is proposed to develop superionic CSEs using cost-effective SiO_(2) nanoparticles as passive ceramic hosts and poly(vinylidene fluoride-hexafluoropropylene)(PVH)microspheres as polymer vips,forming an unprecedented“polymer vip-in-ceramic host”(i.e.,PVH-in-SiO_(2))architecture differing from the traditional“ceramic vip-in-polymer host”.The PVH-in-SiO_(2) exhibits excellent Li-salt dissociation,achieving high-concentration free Li+.Owing to the low diffusion energy barriers and high diffusion coefficient,the free Li+is thermodynamically and kinetically favorable to migrate to and transport at the SiO_(2)/PVH interfaces.Consequently,the PVH-in-SiO_(2) delivers an exceptional ionic conductivity of 1.32.10−3 S cm−1 at 25℃(vs.typically 10−5–10−4 S cm−1 using high-cost active ceramics),achieved under an ultralow residual solvent content of 2.9 wt%(vs.8–15 wt%in other CSEs).Additionally,PVH-in-SiO_(2) is electrochemically stable with Li anode and various cathodes.Therefore,the PVH-in-SiO_(2) demonstrates excellent high-rate cyclability in LiFePO4|Li full cells(92.9%capacity-retention at 3C after 300 cycles under 25℃)and outstanding stability with high-mass-loading LiFePO4(9.2 mg cm−1)and high-voltage NCM622(147.1 mAh g−1).Furthermore,we verify the versatility of the host–vip inversion engineering strategy by fabricating Na-ion and K-ion-based PVH-in-SiO_(2) CSEs with similarly excellent promotions in ionic conductivity.Our strategy offers a simple,low-cost approach to fabricating superionic CSEs for large-scale application of solid-state Li metal batteries and beyond.展开更多
Halide solid-state electrolytes(HSSEs)with excellent ionic conductivity and high voltage stability are promising for all-solid-state Li-ion batteries(ASSLBs).However,they suffer from poor processability,mechanical dur...Halide solid-state electrolytes(HSSEs)with excellent ionic conductivity and high voltage stability are promising for all-solid-state Li-ion batteries(ASSLBs).However,they suffer from poor processability,mechanical durability and humidity stability,hindering their large-scale applications.Here,we introduce a dry-processing fibrillation strategy using hydrophobic polytetrafluoroethylene(PTFE)binder to encapsulate Li_(3)InCl_(6)(LIC)particles(the most representative HSSE).By manipulating the fibrillating process,only 0.5 wt%PTFE is sufficient to prepare free-standing LIC-PTFE(LIC-P)HSSEs.Additionally,LIC-P demonstrates excellent mechanical durability and humidity resistance.They can maintain their shapes after being exposed to humid atmosphere for 30 min,meanwhile still exhibit high ionic conductivity of>0.2m S/cm at 25℃.Consequently,the LIC-P-based ASSLBs deliver a high specific capacity of 126.6 m Ah/g at0.1 C and long cyclability of 200 cycles at 0.2 C.More importantly,the ASSLBs using moisture-exposed LIC-P can still operate properly by exhibiting a high capacity-retention of 87.7%after 100 cycles under0.2 C.Furthermore,for the first time,we unravel the LIC interfacial morphology evolution upon cycling because the good mechanical durability enables a facile separation of LIC-P from ASSLBs after testing.展开更多
Cement occupies a significant proportion in construction,serving as the primary material for components such as bricks and walls.However,its role is largely limited to load-bearing functions,with little exploration of...Cement occupies a significant proportion in construction,serving as the primary material for components such as bricks and walls.However,its role is largely limited to load-bearing functions,with little exploration of additional applications.Simultaneously,buildings remain a major contributor to global energy consumption,accounting for 40%of total energy use.Here,we for the first time endow cement with energy storage functionality by developing cement-based solid-state energy storage wallboards(CSESWs),which can utilize the ample idle surface areas of building walls to seamlessly store renewable energy from distributed photovoltaics without compromising building safety or requiring additional space.Owing to unprecedented microstructures and composition interactions,these CSESWs not only achieve a superionic conductivity of 101.1 mS cm^(−1)but also demonstrate multifunctionality,such as significant toughness,thermal insulation,lightweight,and adhesion.When integrated with asymmetrical electrodes,the CSESWs exhibit a remarkable capacitance(2778.9 mF cm^(−2))and high areal energy density(10.8 mWhcm^(−2)).Moreover,existing residential buildings renovated with our CSESWs can supply 98%of daily electricity needs,demonstrating their outstanding potential for realizing zero-carbon buildings.This study pioneers the use of cement in energy storage,providing a scalable and cost-effective pathway for sustainable construction.展开更多
文摘AIMTo retrospectively evaluate the safety and feasibility of a new modified laparoscopic Sugarbaker repair in patients with parastomal hernias.METHODSA retrospective study was performed to analyze eight patients who underwent parastomal hernia repair between June 2016 and January 2018. All of these patients received modified laparoscopic Sugarbakerhernia repair treatment. This modifed technique included an innovative three-point anchoring and complete su-turing technique to fix the mesh. All procedures were performed by a skilled hernia surgeon. Demographic data and perioperative outcomes were collected to eva-luate the safety and effcacy of this modifed technique.RESULTSOf these eight patients, two had concomitant incisional hernias. All the hernias were repaired by the modifed laparoscopic Sugarbaker technique with no conversion to laparotomy. Three patients had in-situ reconstruc-tion of intestinal stoma. The median mesh size was 300 cm2, and the mean operative time was 205.6 min. The mean postoperative hospitalization time was 10.4 d, with a median pain score of 1 （visual analog scale method） at postoperative day 1. Two patientsdeveloped postoperative complications. One patient had a pocket of effusion surrounding the biologic mesh, and one patient experienced an infection around the reconstructed stoma. Both patients recovered after conservative management. There was no recurrence during the follow-up period （6-22 mo, average 13 mo）.CONCLUSIONThe modifed laparoscopic Sugarbaker repair could fx the mesh reliably with mild postoperative pain and a low recurrence rate. The technique is safe and feasible for parastomal hernias.
基金support from the National Natural Science Foundation of China(No.U23A20574,52201242)the Natural Science Foundation of Jiangsu Province(No.BK20240179).
文摘materials,despite its intensive application in Li/Na-ion batteries.The existing mechanisms of AVE's effects mainly focus on charge transfer but fail to clarify other critical issues.Here,we propose a new insight into AVE's effect on K-ion storage by introducing Te vacancies into a representative conversion-type NiTe.In addition to existing mechanisms,we demonstrate Te vacancies play three other unprecedented roles.(1)Te vacancies minimize the intrinsic volume strain from 15%to 6%,significantly suppressing anode pulverization and element dissolution.(2)Te vacancies induce the in-situ formation of a thin yet robust KF-based inorganic-rich solid electrolyte interphase,further accommodating volume strain and element dissolution.(3)Te vacancies reduce Ni-Te bond lengths and promote K-ion diffusion by modulating local atomic structure.Therefore,NiTe_(1-x)delivers an outstanding cycling performance(229.5 mAh g1 at 3.0 A g^(-1)for 1350 cycles)and rate capability(171.7 mAh g^(-1)at 5.0 A g^(-1)1).Furthermore,NiTe_(1-x)-based full cells showcase a remarkable energy density of 200.4 Wh kg^(-1).This work comprehensively elucidates the AVE's effects on alkali-ion storage,promoting the development of advanced conversion-type anode materials for practical applications.
基金supported by the Gansu Province Outstanding Youth Fund(No.23JRRA1016)the National Natural Science Foundation of China(Nos.42422102,42071101,41907379)the National Key R&D Program of China(No.2022YFF0801501)。
文摘The response of lake environments in arid Central Asia to climate change during the Late Holocene over the centennial to millennial timescales remains contentious.The reason that primarily paleoenvironmental proxies diverse and the scarcity of accurate quantitative reconstruction records.In this study,we employed diatoms and pollen records from lacustrine sediment in the Aibi Lake of Southwest Junggar Basin to quantitatively reconstruct salinity and watershed precipitation amounts while exploring the associated forcing mechanisms.The results indicate that Aibi Lake salinity varied between 2 and 47 g/L during the Late Holocene Period,indicating a generally brackish environment,and corresponding to prevailing Tryblionella granulata diatom in the lake basin.Westerly-dominated annual precipitation varied between 250 and 320 mm during the Late Holocene Period in the basin,exhibiting a generally semi-arid environment and prevailing desert steppe vegetation.The Aibi Lake has a low salinity of average value of~15 g/L and exhibits elevated precipitation(average value of~280 mm)during the periods of the 2900-1990,1570-1140,and 590-120 cal yr BP.The reconstructed precipitation and salinity exhibit a periodicity of~200 years,which is consistent with the cycle of phase changes of the North Atlantic oscillation(NAO)and total solar irradiance(TSI).This correlation suggests that variations in NOA and TSI significantly influence the precipitation and salinity changes in Central Asia over centennial to millennial timescales.
基金the financial support from the 261 Project of MIITNatural Science Foundation of Jiangsu Province(No.BK20240179)。
文摘Fluoropolymers promise all-solid-state lithium metal batteries(ASLMBs)but suffer from two critical challenges.The first is the trade-off between ionic conductivity(σ)and lithium anode reactions,closely related to high-content residual solvents.The second,usually consciously overlooked,is the fluoropolymer's inherent instability against alkaline lithium anodes.Here,we propose indium-based metal-organic frameworks(In-MOFs)as a multifunctional promoter to simultaneously address these two challenges,using poly(vinylidene fluoride-hexafluoropropylene)(PVH)as the typical fluoropolymer.In-MOF plays a trio:(1)adsorbing and converting free residual solvents into bonded states to prevent their side reactions with lithium anodes while retaining their advantages on Li~+transport;(2)forming inorganic-rich solid electrolyte interphase layers to prevent PVH from reacting with lithium anodes and promote uniform lithium deposition without dendrite growth;(3)reducing PVH crystallinity and promoting Li-salt dissociation.Therefore,the resulting PVH/In-MOF(PVH-IM)showcases excellent electrochemical stability against lithium anodes,delivering a 5550 h cycling at 0.2 m A cm^(-2)with a remarkable cumulative lithium deposition capacity of 1110 m Ah cm^(-2).It also exhibits an ultrahighσof 1.23×10^(-3)S cm^(-1)at 25℃.Moreover,all-solid-state LiFePO_4|PVH-IM|Li full cells show outstanding rate capability and cyclability(80.0%capacity retention after 280 cycles at 0.5C),demonstrating high potential for practical ASLMBs.
文摘为了探究栽培模式对阳光玫瑰葡萄花后12~17周挥发性风味物质的影响,采用顶空固相微萃取结合气相色谱-质谱联用(head space phase microextraction gas chromatography-mass spectrometry,HS-SPME-GC-MS)技术对促早栽培和避雨栽培下阳光玫瑰葡萄挥发性风味物质进行检测。结果表明,2种栽培模式下的葡萄中共检测出104种挥发性物质,其中,醇类13种、醛类20种、酮类18种、酯类17种、烯烃类9种、烷类13种、醚类3种、酸类4种、其他化合物7种。促早栽培和避雨栽培模式下的葡萄中均检测出醇类6种、醛类8种、酮类3种、酯类3种、烯烃类1种;促早栽培模式下醇类、酮类、酯类、醛类挥发性风味物质相对含量显著高于避雨栽培模式(P<0.05);酸类仅在避雨栽培模式检测出。相较于避雨栽培,促早栽培更有利于提高阳光玫瑰葡萄果实品质,研究结果为提高阳光玫瑰葡萄果实品质的栽培及管理方式提供参考。
基金the financial support from the 261Project of MIIT and Natural Science Foundation of Jiangsu Province(No.BK20240179)。
文摘The ineluctable introduction of lithium salt to polymer solid-state electrolytes incurs a compromise between strength,ionic conductivity,and thickness.Here,we propose Al_(2)O_(3)-coated polyimide(AO/PI)porous film as a high-strength substrate to support fast-ion-conducting polymer-in-salt(PIS)solid-state electrolytes,aiming to suppress lithium dendrite growth and improve full-cell performance.The Al_(2)O_(3)coating layer not only refines the wettability of polyimide porous film to PIS,but also performs as a high modulus protective layer to suppress the growth of lithium dendrites.The resulting PI/AO@PIS exhibits a small thickness of only 35μm with an outstanding tensile strength of 11.3 MPa and Young's modulus of 537.6 MPa.In addition,the PI/AO@PIS delivers a high ionic conductivity of 0.1 m S/cm at 25°C.As a result,the PI/AO@PIS enables symmetric Li cells to achieve exceptional cyclability for over 1000 h at 0.1 m A/cm2without noticeable lithium dendrite formation.Moreover,the PI/AO@PIS-based LiFePO4||Li full cells demonstrate outstanding rate performance(125.7 m Ah/g at 5 C)and impressive cycling stability(96.1%capacity retention at 1 C after 200 cycles).This work highlights the efficacy of enhancing the mechanical properties of polymer matrices and extending cell performance through the incorporation of a dense inorganic interface layer.
基金financial support from the National Natural Science Foundation of China(Nos.52250010 and 52201242)the 261 Project of MIIT,Natural Science Foundation of Jiangsu Province(No.BK20240179)the Young Elite Scientists Sponsorship Program by CAST(No.2021QNRC001).
文摘Composite solid electrolytes(CSEs)are promising for solid-state Li metal batteries but suffer from inferior room-temperature ionic conductivity due to sluggish ion transport and high cost due to expensive active ceramic fillers.Here,a host–vip inversion engineering strategy is proposed to develop superionic CSEs using cost-effective SiO_(2) nanoparticles as passive ceramic hosts and poly(vinylidene fluoride-hexafluoropropylene)(PVH)microspheres as polymer vips,forming an unprecedented“polymer vip-in-ceramic host”(i.e.,PVH-in-SiO_(2))architecture differing from the traditional“ceramic vip-in-polymer host”.The PVH-in-SiO_(2) exhibits excellent Li-salt dissociation,achieving high-concentration free Li+.Owing to the low diffusion energy barriers and high diffusion coefficient,the free Li+is thermodynamically and kinetically favorable to migrate to and transport at the SiO_(2)/PVH interfaces.Consequently,the PVH-in-SiO_(2) delivers an exceptional ionic conductivity of 1.32.10−3 S cm−1 at 25℃(vs.typically 10−5–10−4 S cm−1 using high-cost active ceramics),achieved under an ultralow residual solvent content of 2.9 wt%(vs.8–15 wt%in other CSEs).Additionally,PVH-in-SiO_(2) is electrochemically stable with Li anode and various cathodes.Therefore,the PVH-in-SiO_(2) demonstrates excellent high-rate cyclability in LiFePO4|Li full cells(92.9%capacity-retention at 3C after 300 cycles under 25℃)and outstanding stability with high-mass-loading LiFePO4(9.2 mg cm−1)and high-voltage NCM622(147.1 mAh g−1).Furthermore,we verify the versatility of the host–vip inversion engineering strategy by fabricating Na-ion and K-ion-based PVH-in-SiO_(2) CSEs with similarly excellent promotions in ionic conductivity.Our strategy offers a simple,low-cost approach to fabricating superionic CSEs for large-scale application of solid-state Li metal batteries and beyond.
基金supported by the 261 Project of MIITthe National Natural Science Foundation of China(Nos.52250010,52201242,U23A20574)the Young Elite Scientists Sponsorship Program by CAST(No.2021QNRC001)。
文摘Halide solid-state electrolytes(HSSEs)with excellent ionic conductivity and high voltage stability are promising for all-solid-state Li-ion batteries(ASSLBs).However,they suffer from poor processability,mechanical durability and humidity stability,hindering their large-scale applications.Here,we introduce a dry-processing fibrillation strategy using hydrophobic polytetrafluoroethylene(PTFE)binder to encapsulate Li_(3)InCl_(6)(LIC)particles(the most representative HSSE).By manipulating the fibrillating process,only 0.5 wt%PTFE is sufficient to prepare free-standing LIC-PTFE(LIC-P)HSSEs.Additionally,LIC-P demonstrates excellent mechanical durability and humidity resistance.They can maintain their shapes after being exposed to humid atmosphere for 30 min,meanwhile still exhibit high ionic conductivity of>0.2m S/cm at 25℃.Consequently,the LIC-P-based ASSLBs deliver a high specific capacity of 126.6 m Ah/g at0.1 C and long cyclability of 200 cycles at 0.2 C.More importantly,the ASSLBs using moisture-exposed LIC-P can still operate properly by exhibiting a high capacity-retention of 87.7%after 100 cycles under0.2 C.Furthermore,for the first time,we unravel the LIC interfacial morphology evolution upon cycling because the good mechanical durability enables a facile separation of LIC-P from ASSLBs after testing.
基金supported by National Natural Science Foundation of China(52250010,52050128,52201242)the Natural Science Foundation of Jiangsu Province(BK20230086 and BK20240179).
文摘Cement occupies a significant proportion in construction,serving as the primary material for components such as bricks and walls.However,its role is largely limited to load-bearing functions,with little exploration of additional applications.Simultaneously,buildings remain a major contributor to global energy consumption,accounting for 40%of total energy use.Here,we for the first time endow cement with energy storage functionality by developing cement-based solid-state energy storage wallboards(CSESWs),which can utilize the ample idle surface areas of building walls to seamlessly store renewable energy from distributed photovoltaics without compromising building safety or requiring additional space.Owing to unprecedented microstructures and composition interactions,these CSESWs not only achieve a superionic conductivity of 101.1 mS cm^(−1)but also demonstrate multifunctionality,such as significant toughness,thermal insulation,lightweight,and adhesion.When integrated with asymmetrical electrodes,the CSESWs exhibit a remarkable capacitance(2778.9 mF cm^(−2))and high areal energy density(10.8 mWhcm^(−2)).Moreover,existing residential buildings renovated with our CSESWs can supply 98%of daily electricity needs,demonstrating their outstanding potential for realizing zero-carbon buildings.This study pioneers the use of cement in energy storage,providing a scalable and cost-effective pathway for sustainable construction.
