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High-boiling-point solvent synthesis of mesoporous NiCo2S4 with high specific surface area as supercapacitor electrode material

Authors :
Jialin Yin
Hao Zhang
Mengqi Yao
Wencheng Hu
Jiaqiu Luo
Source :
Journal of Materials Science: Materials in Electronics. 28:2093-2099
Publication Year :
2016
Publisher :
Springer Science and Business Media LLC, 2016.

Abstract

A facile synthesis approach was successfully developed to synthesize mesoporous NiCo2S4 in ethylene glycol. X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and N2 adsorption–desorption experiment were conducted to examine the morphology and microstructure of the as-prepared NiCo2S4. Furthermore, electrochemical measurements, including cyclic voltammetry, galvanostatic charge–discharge tests, and electrochemical impedance spectroscopy, were carried out in a three-electrode system to evaluate the electrochemical properties of the mesoporous NiCo2S4. The as-prepared NiCo2S4 possessed a high specific surface area of 223.6 m2 g−1 with a high specific capacity of 406 C g−1 at 0.5 A g−1. In addition, only a 6.3 % loss of specific capacity was observed at 5 A g−1 after 20,000 GCD cycles, suggesting a long life cycle.

Details

ISSN :
1573482X and 09574522
Volume :
28
Database :
OpenAIRE
Journal :
Journal of Materials Science: Materials in Electronics
Accession number :
edsair.doi...........44993f646b09842f4f9205aa7284be96
Full Text :
https://doi.org/10.1007/s10854-016-5771-z