Journal
JOURNAL OF POWER SOURCES
Volume 427, Issue -, Pages 138-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2019.04.060
Keywords
NiCo2S4; Porous carbon; Asymmetrical supercapacitor
Funding
- National Key R&D Program of China [2016YFA0202900]
- National Natural Science Foundation of China [51672173, 51801121]
- Science and Technology Commission of Shanghai Municipality [17JC1400700, 18ZR1421000, 18520744700]
- Science and Technology Planning Project of Guangdong Province [2016A010103018]
- Shanghai Research institute of criminal science and technology [2016XCWZK15]
- Medical-Engineering Cross Research Funding of SJTU [YG2017QN11]
- NSERC CGS-D scholarship
- NSERC-MSFSS scholarship
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A NiCo2S4 nanoparticles composite, in-situ grown on rice husk hierarchical porous carbon, is synthesized through a facile one-step hydrothermal method for energy storage. The NiCo2S4 nanoparticles with a size of 20 +/- 10 nm are homogeneously distributed on the carbon matrix, leading to a high material utilization and high capacity, significantly outperformed the pure NiCo2S4. The chemical bonds of C-O-Co and C-O-Ni between the NiCo2S4 nanoparticles and the carbon matrix not only result in a superior power density, but also improve the cycling stability. An asymmetrical supercapacitor is assembled using the composite material and commercial YP-50 activated carbon and shows high energy density, high power density and excellent cycling stability. The hydrothermal method can be extended to synthesize other composite materials for energy storage devices.
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