Preparation and Pseudo-capacitance Performance of NiCo2O4 Nanosheets

作     者：ZHOU Qi JIAO Sunzhi ZHENG Bin LI Zhiyang 

作者机构：School of Materials Science and EngineeringLanzhou University of TechnologyLanzhou 730050P.R.China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals^Lanzhou University of TechnologyLanzhou 730050P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2019年第35卷第6期

页      面：957-961页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China(No.51661018). 

主　　题：Rapid-solidification Dealloying Nickel cobaltate Nanosheet Pseudo-capacitance 

摘      要：Ternary nickel cobaltite(NiCo2O4),as a promising electrode material for supercapacitors,has attracted increasing attention for its excellent electrochemical properties.In this study,novel NiCo2O4 nanosheets were rationally designed and prepared using dealloying process,followed by an oxidation treatment.The as-prepared sample was characterized by microstructural and electrochemical techniques in view of its possible application in supercapacitors.The as-prepared sample exhibited high specific capacitance and excellent durability.The specific capacitance reached 663 F/g at 1 A/g and the rate capacitance high up to 73.6%when the current density increased from 1 A/g to 20 A/g.After 5000 cycles of galvanostatic charge-discharge durability test at 4 A/g,the capacity retention rate was 82.1%.The results indicate that versatile dealloying can be used to prepare robust electrode for supercapacitor application.