Chiral electrolytes for rechargeable metal batteries  

作　　者：Lan-Qing Wu Yu-Jie Ning Zhen-Yu Fan Zhe Li Kun Li Jia Li Shuang-Xin Ren Dubin Huang Yang Yang Weiwei Xie Huan Wang Qing Zhao 

机构地区：[1]Frontiers Science Center for New Organic Matter,Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),State Key Laboratory of Advanced Chemical Power Sources,College of Chemistry,Nankai University,Tianjin 300071,China [2]Beijing Golden Feather New Energy Technology Co.,Ltd,Beijing 100080,China

出　　处：《Journal of Energy Chemistry》2025年第3期834-841,共8页能源化学(英文版)

基　　金：supported by the National Key R&D Program of China(2021YFB2500300);the National Natural Science Foundation of China(22372083,52201259);the Natural Science Foundation of Tianjin(22JCZDJC00380);Young Elite Scientist Sponsorship Program by CAST。

摘　　要：Charge transfer at the liquid(electrolyte)-solid(metal)interfaces is of fundamental importance to metal electrochemical deposition that further determines the reversibility and kinetics of energy-dense rechargeable metal batteries(RMBs).We demonstrate the fast charge transfer at the electrolyte-metal interfaces for lithium metal by designing and synthesizing electrolytes with chiral solvents:R(or S)-1,2-dimethoxy pro pane(R-DMP or S-DMP)and R(or S)-4-methyl-1,3-dioxolane(R-MDOL or S-MDOL).The chiral-induced spin selectivity is considered to produce spin-polarized metal surfaces,enabling the improvement in charge transfer rate and efficiency.The deposited Li metal in chiral electrolytes shows smooth and uniform morphologies,as well as high initial(>95%)and average(~99.2%)Coulombic efficiency for Li metal stripping/plating process,thus prolonging the life-span of batteries using thin lithium anode(50μm)to 400 cycles till 80%capacity retention.This work provides a distinct approach to regulate metal deposition beyond the limitation of ion de-solvation.

关 键 词：Chiral ether electrolytes Electrode kinetics Li metal batteries Metal deposition Solvation structures 

分 类 号：TM912[电气工程—电力电子与电力传动]