Journal
NANO RESEARCH
Volume 13, Issue 1, Pages 188-195Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-019-2594-2
Keywords
Co-Mo sulfide; nanoparticle; reduced graphene oxide; lithium and sodium ion storage
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Funding
- National Natural Science Foundation of China [21872058]
- Key Project of Science and Technology in Guangdong Province [2017A010106006]
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A novel hybrid, highly dispersed spinel Co-Mo sulfide nanoparticles on reduced graphene oxide (Co3S4/CoMo2S4@rGO), is reported as anode for lithium and sodium ion storage. The hybrid is synthesized by one-step hydrothermal method but exhibits excellent lithium and sodium storage performances. The as-synthesized Co3S4/CoMo2S4@rGO presents reversible capacity of 595.4 mA.h.g(-1) and 408.8 mA.h.g(-1) after 100 cycles at a current density of 0.2 A.g(-1) for lithium and sodium ion storages, respectively. Such superior performances are attributed to the unique composition and structure of Co3S4/CoMo2S4@rGO. The rGO provides a good electronically conductive network and ensures the formation of spinel Co3S4/CoMo2S4 nanoparticles, the Co3S4/CoMo2S4 nanoparticles provide large reaction surface for lithium and sodium intercalation/deintercalation, and the spinel structure allows fast lithium and sodium ion diffusion in three dimensions.
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