Conductive Framework-Stabilized Zn-Metal Anodes for High-Performance Zn-Ion Batteries and Capacitors  

作　　者：Zhe Gong Zhuo Li Pengfei Wang Kai Jiang Zhaowen Bai Kai Zhu Jun Yan Ke Ye Guiling Wang Dianxue Cao Guohua Chen 

机构地区：[1]Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,P.R.China [2]Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province,School of Environmental and Chemical Engineering,Shenyang University of Technology,Shenyang 110870,P.R.China [3]Department of Mechanical Engineering,The Hong Kong Polytechnic University,Hung Hom,Kowloon,Hong Kong SAR,P.R.China [4]School of Energy and Environment,City University of Hong Kong,Hong Kong 999077,P.R.China

出　　处：《Energy Material Advances》2023年第1期272-280,共9页能源材料前沿（英文）

基　　金：Hong Kong Scholars Programs(Grant No.XJ2019024);Natural Science Foundation of Heilongjiang(LC2018004);Protective Materials Engineering Technology Research Center(002100130630D);Heilongjiang Province Marine New Energy;China Postdoctoral Science Foundation(2019T120254 and 2018M630340);Fundamental Research Funds for the Central University.

摘　　要：Aqueous zinc(Zn)-based energy storage devices possess promising applications for large-scale energy storage systems due to the advantage of high safety,low price,and environment-friendliness.However,their development is restricted by dendrite growth and hydrogen evolution issues from the Zn-metal anode.Herein,a facile stress-pressing method is reported for constructing a grid zinc anode(GZn)with a conductive framework.The highly conductive copper(Cu)-mesh framework reduces electrode hydrogen evolution and increases electrode conductivity.Meanwhile,the in situ-formed Cu-Zn nano-alloy stabilizes the Zn deposition interface.As a result,the GZn symmetrical cell presents a low overpotential of 49 mV after cycling for 1,200 h(0.2 mA∙cm^(-2)).In addition,GZn displays its potential application as a universal anode for Zn-ion capacitors and batteries.An activated carbon||GZn Zn-ion capacitor delivers a stable cycling performance after 10,000 cycles at 5 A∙g^(−1) and MnO2||GZn Zn-ion batteries exhibit satisfactory cycle stability and excellent rate performance.This demonstrates that GZn appears to be a promising universal anode for Zn-ion capacitors and batteries.

关 键 词：CYCLING electrode CONDUCTIVE 

分 类 号：TM912[电气工程—电力电子与电力传动]