期刊
MATERIALS LETTERS
卷 290, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.129489
关键词
Hybird-capacitance; Heterostructure; Ni3S4/Co3S4; Mesoporous carbon
资金
- National Natural Science Foundation of China [51972180, 51572134]
- Key Research & Development Project of Shandong Province [2019GGX102070]
- Qilu University of Technology
- Program for Scientific Research Innovation Team in Colleges and Universities of Jinan [2018GXRC006]
The Ni3S4/Co3S4 heterostructure@mesoporous carbon electrode material was successfully designed and synthesized using hydrothermal technology. Various tests confirmed its excellent electrochemical performance, providing an effective method for synthesizing high-performance electrode materials.
To obtain high-performance electrode materials, the Ni3S4/Co3S4 heterostructure@mesoporous carbon (MC) was designed and synthesized by hydrothermal technology. The X-ray powder diffraction (XRD), Raman, N-2 adsorption-desorption (BET) and transmission electron microscope (TEM) tests proved a certain degree of graphitization, mesoporosity, and Ni3S4/Co3S4 heterostructure of Ni3S4/Co3S4 @MC. The synergy of above structures delivered a good electrochemical reversibility and high charge transfer kinetics. As an electrode material with hybrid-capacitive of electrochemical double layer and battery-type capacitances, Ni3S4/Co3S4@MC displayed a specific capacitance of 1725.6 F g(-1) at 0.5 A g(-1) and a retention rate of 67.7% with a fading rate of 1.6% per cycle over 2000 cycles at 1.0 A g(-1). It provides an effective method to synthesize the high-performance electrode materials with hybrid-capacitance. (C) 2021 Elsevier B.V. All rights reserved.
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