Performance optimization of aqueous Zn/MnO^(2)batteries through the synergistic effect of PVP intercalation and GO coating  

作　　者：Shilong Li Ming Zhao Yefei Xu Zhanyi Liu Mian Li Qing Huang Xiang Wu 

机构地区：[1]School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China [2]Zhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China

出　　处：《Chinese Chemical Letters》2025年第3期488-493,共6页中国化学快报(英文版)

基　　金：supported by National Natural Science Foundation of China(No.52172218).

摘　　要：Manganese dioxide(MnO_(2))electrode material possesses the advantages of high energy density,structural diversity and high modification potential.This allows it become one of the important cathodes for aqueous zinc ion battery.However,the applications are limited by the poor electrical conductivity,narrow layer spacing and the ease of dissolution.Herein,we prepare MnO_(2)-PVP@0.03GO composites by the co-modification of polyvinylpyrrolidone(PVP)pre-insertion layer and graphene oxide(GO)self-assembly layer.The Zn//MnO_(2)-PVP@0.03GO cells deliver a discharge specific capacity of 442 mAh/g at a current density of 0.2 A/g.It also maintains 100%capacity for 1000 times cycling at 1 A/g.The assembled soft package batteries demonstrate superior flexibility and adaptability under different bending conditions.

关 键 词：Aqueous zinc ion batteries CATHODE MnO_(2) Cycle stability High capacity 

分 类 号：TM911.41[电气工程—电力电子与电力传动] TM911.1