Preparation and Pseudo-capacitance Performance of NiCo2O4 Nanosheets

• 来源期刊: 高等学校化学研究（英文版）
• 年，卷（期）: 2019,（6）
• 页码范围: 957-961
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s40242-019-9172-8

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.