Journal
NANOTECHNOLOGY
Volume 29, Issue 29, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aac25f
Keywords
nanocomposites; energy storage and conversion; hydrothermal; MoS2; CoS2; graphene
Funding
- National Natural Science Foundation of China [21601147, 21671160]
- Long Shan Talent Project [17LZX306, 17LZXT04]
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A three-dimensional (3D) MoS2 coated CoS2-nitrogen doped graphene (NG) (CoS2@MoS2-NG) hybrid has been synthesized by a one step hydrothermal method as supercapacitor (SC) electrode material for the first time. Such a composite consists of NG embedded with stacked CoS2@MoS2-NG sheets. With a 3D skeleton, it prevents the agglomeration of CoS2@MoS2 nanoparticles, resulting in sound conductivity, rich porous structures and a large surface area. The results indicate that CoS2@MoS2-NG has higher specific capacitance (198 F g(-1) at 1 A g(-1)), better rate performance (with about 56.57% from 1 to 16 A g(-1)) and an improved cycle stability (with about 96.97% after 1000 cycles). It is an ideal candidate for SC electrode materials.
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