Novel Composites between Nano-Structured Nickel Sulfides and Three-Dimensional Graphene for High Performance Supercapacitors

Authors

Xiaomin Wang, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Follow
Huanglin Dou, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Zhen Tian, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Jiujun Zhang, College of Science, and Institute for Sustainable Energy, Shanghai University, Shanghai 200444, China;Follow

Corresponding Author

Xiaomin Wang(wangxiaomin@tyut.edu.cn);
Jiujun Zhang(jiujun@shaw.ca)

Abstract

In this paper, a three-dimensional graphene (3DG) network grown on nickel foam was employed as a template for synthesizing graphene-based composite materials of supercapacitor electrode. The composites (crystal Ni₃S₂ nanorods on the surface of 3DG (abbreviated as Ni₃S₂/3DG)) were obtained through a one-step hydrothermal reaction. The morphological and structural evolution of the Ni₃S₂/3DG composites were investigated by SEM, TEM, XRD and Raman spectroscopy. Detailed electrochemical characterization showed that the Ni₃S₂/3DG-coated electrodes exhibited both a specific capacitance as high as 1825 F·g^-1 at 5 mV·s^-1 and a discharge capacitance as high as 517 F·g^-1 at 10 mA. Remarkably, a high cycling performance (~ 100% capacitance retention after 1000 cycles) is achieved at a current density of 20 mA.

Graphical Abstract

Keywords

three-dimensional graphene, nickel sulfide, supercapacitor, electrochenical energy storage

DOI Link

https://doi.org/10.13208/j.electrochem.161246

Publication Date

2017-04-28

Online Available Date

2017-02-09

Revised Date

2017-01-15

Received Date

2016-12-06

Recommended Citation

Xiaomin Wang, Huanglin Dou, Zhen Tian, Jiujun Zhang. Novel Composites between Nano-Structured Nickel Sulfides and Three-Dimensional Graphene for High Performance Supercapacitors[J]. Journal of Electrochemistry, 2017 , 23(2): 217-225.
DOI: 10.13208/j.electrochem.161246
Available at: https://jelectrochem.xmu.edu.cn/journal/vol23/iss2/11

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