Double locked silver-coated silicon nanoparticle/graphene core/shell fiber for high-performance lithium-ion battery anodes

Minsu Gu, Seunghee Ko, Seungmin Yoo, Eunhee Lee, Sa Hoon Min, Soojin Park, Byeong Su Kim

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We present a fabrication of scalable coaxial core/shell silicon (Si)-graphene fiber prepared by dual-nozzle-induced wet-spinning assembly for high-performance Si anode. Over 50 wt% of Si nanoparticles mixed with graphene oxide suspension can be incorporated in the core with the outstanding dispersibility of unique silver-coated Si nanoparticles in aqueous media. The core fiber is further encapsulated by graphene shell which not only provides conducting pathways, but also alleviates severe volume expansion of Si core. This novel core/shell Si anode with double locked graphene architecture delivers more stable cycle performance and superior rate capability than anodes composed of simple mixture of Si-graphene composites.

Original languageEnglish
Pages (from-to)351-357
Number of pages7
JournalJournal of Power Sources
Volume300
DOIs
Publication statusPublished - 2015 Dec 30

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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