Regeneration of spent cathodes of Li-ion batteries into multifunctional electrodes for overall water splitting and rechargeable Zn-air batteries by ultrafast carbothermal shock

作     者：Xuerong Zheng Xin Zhao Junda Lu Jihong Li Zhengpei Miao Wei Xu Yida Deng Andrey L.Rogach 郑学荣;赵鑫;芦俊达;李纪红;苗政培;许威;邓意达;罗德礼

作者机构：State Key Laboratory of Marine Resource Utilization in South China SeaSchool of Materials Science and EngineeringHainan UniversityHaikou 570228China Department of Materials Science and Engineeringand Center for Functional Photonics(CFP)City University of Hong KongHong Kong S.A.R.999077China School of Materials Science and EngineeringKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin 300072China Jiangsu Genox Environmental Engineering Technology Co.Ltd.Nanjing 210012China 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第9期

页      面：2393-2400页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(52177220) Hong Kong Scholar Program(XJ2020001) the State Key Laboratory of Electrical Insulation and Power Equipment of Xi’an University(EIPE21203) 

主　　题：lithium-ion battery waste management carbothermal shock overall water splitting Zn-air battery 

摘      要：Lithium-ion batteries(LIBs)are widely used in electric vehicles and consumer electronics and require reliable recycling *** this paper,we investigated how an ultrafast carbothermal shock treatment can be used to convert spent cathodes of LIBs(LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2))into Ni/Ni-Mn-Co-O(N/NMCO)composites with a remarkable electrocatalytic performance toward oxygen evolution,oxygen reduction,and hydrogen evolution *** converted spent cathodes can be employed as cathodes and anodes in an overall water-splitting system,and they displayed a low overpotential of 1.61 V and remarkable stability at different current ***,N/NMCO electrodes can be used as cathodes in rechargeable Zn-air batteries,which displayed long-term stability(30 h),high specific capacity(781 mA h g^(-1))and peak power density(137 mW cm^(-2)),as well as a small charge/discharge voltage gap of 0.71 ***,our study offers a“waste-to-treasurestrategy for the regeneration of spent cathodes of LIBs and their applications in other advanced energy storage and conversion technologies.