Preparation and Pseudo-capacitance Performance of NiCo2O4 Nanosheets  

作　　者：ZHOU Qi JIAO Sunzhi ZHENG Bin LI Zhiyang 

机构地区：[1]School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,P.R.China [2]State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals^Lanzhou University of Technology,Lanzhou 730050,P.R.China

出　　处：《Chemical Research in Chinese Universities》2019年第6期957-961,共5页高等学校化学研究（英文版）

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

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.

关 键 词：RAPID-SOLIDIFICATION DEALLOYING Nickel COBALTATE NANOSHEET PSEUDO-CAPACITANCE 

分 类 号：TB3[一般工业技术—材料科学与工程]