Recycling spent lithium-ion batteries is integral to today's low-carbon environmental protection efforts.The concept of direct regeneration,acknowledged for its environmental sustainability,economic viability,and ...Recycling spent lithium-ion batteries is integral to today's low-carbon environmental protection efforts.The concept of direct regeneration,acknowledged for its environmental sustainability,economic viability,and consistent performance of recycled materials,is gaining prominence.This study presents an efficient and nondestructive approach by utilizing an ultrafast microwave technology to directly regenerate spent lithium cobaltate(LCO)cathode materials.In contrast to conventional furnacebased processes,this method significantly reduces the regeneration timeframe.By subjecting the spent LCO mixed with lithium sources to three microwave heating cycles(at approximately 1,350 K),LCO regeneration is achieved,yielding a specific capacity of 140.8 mAh g^(-1)(0.2 C)with a robust cycle stability.With further environmental and economic benefits,the ultrafast microwave technology holds scientific promise for directly regenerating cathode materials,while establishing competitiveness for industrial applications.展开更多
Accurate detection of uric acid(UA)is crucial for diagnosing gout,yet traditional sweat-based UA sensors continue to face challenges posed by complex and costly electrode fabrication methods,as well as weakly hydrophi...Accurate detection of uric acid(UA)is crucial for diagnosing gout,yet traditional sweat-based UA sensors continue to face challenges posed by complex and costly electrode fabrication methods,as well as weakly hydrophilic substrates.Here,we designed and developed simple,low-cost,and hydrophilic sweat UA detection sensors constructed by carbon electrodes and cellulose paper substrates.The carbon electrodes were made by carbonized polyimide films through a simple,one-step laser engraving method.Our electrodes are porous,possess a large specific surface area,and are flexible and conductive.The substrates were composed of highly hydrophilic cellulose paper that can effectively collect,store,and transport sweat.The constructed electrodes demonstrate high sensitivity of 0.4μA Lμmol^(-1)cm^(-2),wide linear range of 2–100μmol/L.In addition,our electrodes demonstrate high selectivity,excellent reproducibility,high flexibility,and outstanding stability against mechanical bending,temperature variations,and extended storage periods.Furthermore,our sensors have been proven to provide reliable results when detecting UA levels in real sweat and on real human skin.We envision that these sensors hold enormous potential for use in the prognosis,diagnosis,and treatment of gout.展开更多
基金supported by the startup funding of Shanghai Jiao Tong Universitythe National Natural Science Foundation of Chinathe Ministry of Higher Education of Malaysia for the Fundamental Research Grant(FRGS/1/2022/STG05/UM/02/3)to Woo Haw Jiunn。
文摘Recycling spent lithium-ion batteries is integral to today's low-carbon environmental protection efforts.The concept of direct regeneration,acknowledged for its environmental sustainability,economic viability,and consistent performance of recycled materials,is gaining prominence.This study presents an efficient and nondestructive approach by utilizing an ultrafast microwave technology to directly regenerate spent lithium cobaltate(LCO)cathode materials.In contrast to conventional furnacebased processes,this method significantly reduces the regeneration timeframe.By subjecting the spent LCO mixed with lithium sources to three microwave heating cycles(at approximately 1,350 K),LCO regeneration is achieved,yielding a specific capacity of 140.8 mAh g^(-1)(0.2 C)with a robust cycle stability.With further environmental and economic benefits,the ultrafast microwave technology holds scientific promise for directly regenerating cathode materials,while establishing competitiveness for industrial applications.
基金funded by Guangdong Basic and Applied Basic Research Foundation(No.2023A1515011388)Guangzhou City Industrial Science&Technology Projects(No.202201010059)+2 种基金the fund from Guangxi China Tobacco Industry Co.,Ltd.(No.2022450000340057)the fund for the construction of Bengbu-SCUT Research Center for Advanced Manufacturing of Biomaterials(No.20210190)The National Key Research and Development Program of China(No.2018YFC1902102)。
文摘Accurate detection of uric acid(UA)is crucial for diagnosing gout,yet traditional sweat-based UA sensors continue to face challenges posed by complex and costly electrode fabrication methods,as well as weakly hydrophilic substrates.Here,we designed and developed simple,low-cost,and hydrophilic sweat UA detection sensors constructed by carbon electrodes and cellulose paper substrates.The carbon electrodes were made by carbonized polyimide films through a simple,one-step laser engraving method.Our electrodes are porous,possess a large specific surface area,and are flexible and conductive.The substrates were composed of highly hydrophilic cellulose paper that can effectively collect,store,and transport sweat.The constructed electrodes demonstrate high sensitivity of 0.4μA Lμmol^(-1)cm^(-2),wide linear range of 2–100μmol/L.In addition,our electrodes demonstrate high selectivity,excellent reproducibility,high flexibility,and outstanding stability against mechanical bending,temperature variations,and extended storage periods.Furthermore,our sensors have been proven to provide reliable results when detecting UA levels in real sweat and on real human skin.We envision that these sensors hold enormous potential for use in the prognosis,diagnosis,and treatment of gout.
