Highly dispersed Co-Mo sulfide nanoparticles on reduced graphene oxide for lithium and sodium ion storage

Yuqing Liao, Chun Wu, Yaotang Zhong, Min Chen, Luyang Cai, Huirong Wang, Xiang Liu, Guozhong Cao, Weishan Li

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

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. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)188-195
Number of pages8
JournalNano Research
Volume13
Issue number1
DOIs
StatePublished - 1 Jan 2020

Keywords

  • Co-Mo sulfide
  • lithium and sodium ion storage
  • nanoparticle
  • reduced graphene oxide

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