As the carrier of charge storage,the electrode determines the efficiency of the energy conversion reaction between the battery and the substance.However,with the continuous development of scientific research,electrode...As the carrier of charge storage,the electrode determines the efficiency of the energy conversion reaction between the battery and the substance.However,with the continuous development of scientific research,electrode preparation is still facing complex technical problems,and it is difficult to achieve a balance in performance,cost,and technology.Based on the ion dissolution and deposition behavior of Mn^(2+)/MnO_(2) and Al^(3+)/Al,a novel cathode-free aqueous ion dissolution/deposition battery is designed,which can contribute 15 mAh at 16 cm^(2) in a voltage window of 0.5-1.8 V.The charge storage and the attenuation mechanism are systematically investigated.The battery model with compensable electrolyte was constructed,and the cycle characteristics of the cathode-free aqueous ion dissolution/deposition battery were optimized,which could achieve 1000 h continuous operation.This system provides a low-cost and high-safety solution for future high-energy density and large-scale energy storage.Future research will focus on optimizing electrolytes,controlling deposition morphology,and improving interface stability to further promote the commercialization of cathode-free batteries.展开更多
Given the abundant solar light available on our planet,it is promising to develop an advanced fabric capable of simultaneously providing personal thermal management and facilitating clean water production in an energy...Given the abundant solar light available on our planet,it is promising to develop an advanced fabric capable of simultaneously providing personal thermal management and facilitating clean water production in an energy-efficient manner.In this study,we present the fabrication of a photothermally active,biodegradable composite cloth composed of titanium carbide MXene and cellulose,achieved through an electrospinning method.This composite cloth exhibits favorable attributes,including chemical stability,mechanical performance,structural flexibility,and wettability.Notably,our 0.1-mm-thick composite cloth(RC/MXene IV)raises the temperature of simulated skin by 5.6℃when compared to a commercially available cotton cloth,which is five times thicker under identical ambient conditions.Remarkably,the composite cloth(RC/MXene V)demonstrates heightened solar light capture efficiency(87.7%)when in a wet state instead of a dry state.Consequently,this cloth functions exceptionally well as a high-performance steam generator,boasting a superior water evaporation rate of 1.34 kg m^(-2)h^(-1)under one-sun irradiation(equivalent to 1000 W m^(-2)).Moreover,it maintains its performance excellence in solar desali-nation processes.The multifunctionality of these cloths opens doors to a diverse array of outdoor applications,including solar-driven water evaporation and personal heating,thereby enriching the scope of integrated functionalities for textiles.展开更多
基金support provided by the Natural Science Foundation of Jilin Province(YDZJ202401316ZYTS)the Innovation Laboratory Development Program of the Education Department of Jilin Province and the Industry and Information Technology Department of Jilin Province,China(The Joint Laboratory of MXene Materials)the MXene Research Support Plan of Jilin 11 Technology Co.,Ltd.,China,and Future(Jilin)Material Technology Co.,Ltd.
文摘As the carrier of charge storage,the electrode determines the efficiency of the energy conversion reaction between the battery and the substance.However,with the continuous development of scientific research,electrode preparation is still facing complex technical problems,and it is difficult to achieve a balance in performance,cost,and technology.Based on the ion dissolution and deposition behavior of Mn^(2+)/MnO_(2) and Al^(3+)/Al,a novel cathode-free aqueous ion dissolution/deposition battery is designed,which can contribute 15 mAh at 16 cm^(2) in a voltage window of 0.5-1.8 V.The charge storage and the attenuation mechanism are systematically investigated.The battery model with compensable electrolyte was constructed,and the cycle characteristics of the cathode-free aqueous ion dissolution/deposition battery were optimized,which could achieve 1000 h continuous operation.This system provides a low-cost and high-safety solution for future high-energy density and large-scale energy storage.Future research will focus on optimizing electrolytes,controlling deposition morphology,and improving interface stability to further promote the commercialization of cathode-free batteries.
基金support from ERC Consolidator Grant PARIS-101043485 from the European Research Council,Swedish Research Council Grant 2018-05351the Wallenberg Academy Fellow program(Grant KAW 2017.0166)in Sweden and the Wallenberg Initiative Materials Science for Sustainability(WISE)funded by the Knut and Alice Wallenberg Foundation(project number:WISE-AP01-D197)support from the Swedish Research Council(2021-05839)and Aforsk Foundation(22-274).
文摘Given the abundant solar light available on our planet,it is promising to develop an advanced fabric capable of simultaneously providing personal thermal management and facilitating clean water production in an energy-efficient manner.In this study,we present the fabrication of a photothermally active,biodegradable composite cloth composed of titanium carbide MXene and cellulose,achieved through an electrospinning method.This composite cloth exhibits favorable attributes,including chemical stability,mechanical performance,structural flexibility,and wettability.Notably,our 0.1-mm-thick composite cloth(RC/MXene IV)raises the temperature of simulated skin by 5.6℃when compared to a commercially available cotton cloth,which is five times thicker under identical ambient conditions.Remarkably,the composite cloth(RC/MXene V)demonstrates heightened solar light capture efficiency(87.7%)when in a wet state instead of a dry state.Consequently,this cloth functions exceptionally well as a high-performance steam generator,boasting a superior water evaporation rate of 1.34 kg m^(-2)h^(-1)under one-sun irradiation(equivalent to 1000 W m^(-2)).Moreover,it maintains its performance excellence in solar desali-nation processes.The multifunctionality of these cloths opens doors to a diverse array of outdoor applications,including solar-driven water evaporation and personal heating,thereby enriching the scope of integrated functionalities for textiles.
