Template-free Synthesis of Porous NiO Hierarchical Structure for High Performance Supercapacitors

Authors

Yun HUANG, Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130012, Jilin, China.
Zhong WU, Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Xin-Bo ZHANG, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.

Corresponding Author

Xin-Bo ZHANG(xbzhang@ciac.ac.cn)

Abstract

A facile and template-free hydrothermal method is proposed to successfully synthesize porous NiO hierarchical structure, which is found to be assembled from ultrathin NiO nanosheets. As for electrochemical pseudocapacitor application, the obtained material exhibits not only high specific capacitances of 435 F?g-1 at 20 mV?s-1 and 367 F?g-1 at 10 A?g-1, but also holds a good electrochemical stability over 1000 cycles at a current rate of 20 mV?s-1. These results suggest that the hierarchical structured porous NiO is a promising supercapacitor electrode material.

Graphical Abstract

Keywords

Supercapacitor, NiO, Hierarchical structure, Template-free, Electrochemical stability

DOI Link

https://doi.org/10.61558/2993-074X.2896

Publication Date

2012-04-28

Online Available Date

2012-02-25

Revised Date

2012-02-15

Received Date

2011-12-24

Recommended Citation

Yun HUANG, Zhong WU, Xin-Bo ZHANG. Template-free Synthesis of Porous NiO Hierarchical Structure for High Performance Supercapacitors[J]. Journal of Electrochemistry, 2012 , 18(2): Article 10.
DOI: 10.61558/2993-074X.2896
Available at: https://jelectrochem.xmu.edu.cn/journal/vol18/iss2/10