期刊
CURRENT APPLIED PHYSICS
卷 20, 期 2, 页码 304-309出版社
ELSEVIER
DOI: 10.1016/j.cap.2019.11.023
关键词
NiCo2S4 nanospheres; Reduced graphene oxide; High specific capacitance; Electrode material
资金
- National Natural Science Foundation of China [51804275]
- China Postdoctoral Science Foundation [2018M632811, 2019T120638]
- Scientific Research Start-up Project of Zhengzhou University [32210793]
- Key scientific research project plan of Henan colleges and universities [19A45001]
- Modern Analysis and Computing Centre in Zhengzhou University
The NiCo2S4 nanospheres arrayed on the surface of reduced graphene oxide (rGO) was fabricated via one-step hydrothermal method. The effect of initial feeding mass of Ni(NO3)(2)center dot 6H(2)O and Co(NO3)(2)center dot 6H(2)O to rGO on the microstructure and electrochemical performance of the as-prepared composites was studied. The results indicated that the specific capacitances of the composites were first increased and then reduced due to the aggregation of NiCo2S4 nanospheres. NiCo2S4 nanospheres/rGO composites exhibited a remarkable specific capacitance of 1406 F/g and excellent cyclic stability of 82.36% at the current density of 1 A/g, which were better than those of individual NiCo2S4 (792 F/g and 64.77%) counterpart. These results showed that the as-prepared NiCo2S4 nanospheres/rGO composites were outstanding candidate for electrode material of supercapacitors.
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