Highly reversible li storage in hybrid NiO/Ni/graphene nanocomposites prepared by an electrical wire explosion process

Duk Hee Lee, Jae Chan Kim, Hyun Woo Shim, Dong-Wan Kim

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36 Citations (Scopus)

Abstract

NiO/Ni/graphene nanocomposites were prepared using a simple and environmentally friendly method comprising an electrical wire pulse technique in oleic acid containing graphenes and subsequent annealing to form anodes for Li ion batteries. The control product of NiO/Ni nanocomposite was prepared under the same conditions and characterized by structural and electrochemical analysis. The obtained NiO/Ni/graphene nanocomposite particles had sizes of 5-12 nm and a high surface area of 137 m2 g-1. In comparison to NiO/Ni, NiO/Ni/graphene exhibited improved cycling performance and good rate capability. Reversible capacity was maintained at over 600 mA h g-1 at 0.2 C and was attributed to the alleviation in volume change and improved electrical conductivity of NiO/Ni/graphene nanocomposites.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number1
DOIs
Publication statusPublished - 2014 Jan 8
Externally publishedYes

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Keywords

  • electrical wire explosion
  • Li ion battery
  • nanocomposites
  • NiO/Ni/graphene

ASJC Scopus subject areas

  • Materials Science(all)

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