Hydrogen bond-induced elastic polyzwitterion electrolytes constructed by mussel-inspired autopolymerization for zinc-ion battery  

作　　者：Shi Wang Xinyi Wu Chao Liu Lingjun He Shuanghan Li Yuqi Miao Mingrui Cai Yi Li Zheng-Dong Huang Wen-Yong Lai 

机构地区：[1]State Key Laboratory of Organic Electronics and Information Displays(SKLOEID),Institute of Advanced Materials(IAM),School of Chemistry and Life Sciences,Nanjing University of Posts&Telecommunications,Nanjing 210023,China

出　　处：《Science China Chemistry》2024年第10期3438-3449,共12页中国科学（化学英文版）

基　　金：supported by the National Key Research and Development Program of China(2023YFB3608904);the National Natural Science Foundation of China(21835003,21674050,62274092);the Natural Science Foundation of Jiangsu Province(BK20210601,BE2019120);the Foundation of Key Laboratory of Flexible Electronics of Zhejiang Province(2023FE002);the Program for Jiangsu Specially-Appointed Professor(RK030STP15001);the Leading Talent of Technological Innovation of National Ten-Thousands Talents Program of China;the NUPT“1311 Project”and Scientific Foundation(NY219159,NY219021);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD,YX030003);the China Postdoctoral Science Foundation(2023M741624);the Project of State Key Laboratory of Organic Electronics and Information Displays(GZR2023010016);the Natural Science Foundation of Nanjing University of Posts and Telecommunications(NY223079)。

摘　　要：Aqueous zinc-ion batteries(ZIBs)have attracted much interest to realize safe rechargeable batteries with high safety and high energy density.However,it is still challenging to address dendrite growth and parasitic reactions in zinc anodes.We propose herein the design concept of hydrogen bond-induced elastic polyzwitterion electrolytes with zincophilic groups for achieving robust ZIBs.Mussel-inspired autopolymerization has been developed to construct the polyzwitterion electrolytes at room temperature by inducing electron density delocalization atα-position of C=C bond in zwitterion monomer by Zn^(2+).Specifically,the zwitterionic functional groups construct ion transport channels,and the unique–NH–and SO_(3)^(-)groups co-compete with H_(2)O for coordination with Zn^(2+)and promote the desolvation of hydrated Zn^(2+),thus achieving a high room temperature ionic conductivity(6.7 mS cm^(-1))and an increased Zn^(2+)migration number(0.65)for the polyzwitterion electrolytes.In addition,various interactions such as hydrogen bonding and electrostatic interactions between electrolyte ions and zwitterionic groups impart high stretchability and strength to the polyzwitterion electrolytes,which,combined with SO_(3)^(-)philic(002)crystallographic properties,effectively inhibit the growth of zinc dendrites.As a result,rigid/wearable solid-state ZIBs exhibit excellent cycling and C-rate performances.We believe that the strategy of constructing polyzwitterionic electrolytes with zincophilic groups and ion transport channels opens up a new direction in polymer electrolyte engineering towards safe and high energy batteries.

关 键 词：flexible electronics wearable electronics polyzwitterion electrolytes SELF-POLYMERIZATION zinc-ion batteries 

分 类 号：O646[理学—物理化学] TM912[理学—化学]