Poly(Ionic Liquid) as an Anion Exchange Membrane for a 3.3 V Copper–Lithium Battery

作     者：Kaiming Xue Yu Zhao Pui-Kit Lee Denis Y.W.Yu Kaiming Xue;Yu Zhao;Pui-Kit Lee;Denis Y.W.Yu

作者机构：School of Energy and EnvironmentCity University of Hong Kong83 Tat Chee AveKowloonHong KongChina 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2023年第6卷第4期

页      面：89-97页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 080501[工学-材料物理与化学] 0706[理学-大气科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by grant from the Research Grants Council(City U 11305220)of the Hong Kong Special Administrative Region China 

主　　题：anion exchange membrane copper cathode cycle stability ion transport metal-metal battery poly(ionic liquid) 

摘      要：Metal–metal battery bears great potential for next-generation large-scale energy storage system because of its simple manufacture process and low production ***,the cross-over of metal cations from the cathode to the anode causes a loss in capacity and influences battery ***,a coating of poly(ionic liquid)(PIL)with poly(diallyldimethylammonium bis(trifluoromethanesulfonyl)imide)(PDADMA^(+)TFSI^(−))on a commercial polypropylene(PP)separator serves as an anion exchange membrane for a 3.3 V copper–lithium *** PIL has a positively charged polymer backbone that can block the migration of copper ions,thus improving Coulombic efficiency,long-term cycling stability and inhibiting self-discharge of the *** can also facilitate the conduction of anions through the membrane and reduce polarization,especially for fast charging/***-Vincent method gives the transport number in the electrolyte to be 0.25 and 0.04 for PP separator without and with PIL coating,*** suggests that the PIL layer reduces the contribution of the internal current due to cation *** use of PIL as a coating layer for commercial PP separator is a cost-effective way to improve overall electrochemical performance of copper–lithium *** to PP and polyacrylic acid(PAA)/PP separators,the PIL/PP membrane raises the Coulombic efficiency to 99%and decreases the average discharge voltage drop to about 0.09 V when the current density is increased from 0.1 to 1 mA cm^(−2).