Enhancing the stability of silicon nanosheets electrodes by fluoroethylene carbonate

Jeong Min Park, Sujin Kim, Jung Hoon Ha, Sung Wook Kim, Jaejun Lee, Sangwon Park, Byung Won Cho, Heon Jin Choi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Stabilization of the SEI layer that is formed by consuming active lithium in electrolytes is a critical issue for improving the cyclability of lithium ion batteries. We used SiNSs as anodes and investigated the effect of fluoroethylene carbonate (FEC) additives on the SEI layer. Our XPS, EIS and TEM analysis of C[sbnd]O and C[dbnd]O bonds, interfacial resistance and thickness of SEl layer, respectively, shows that the FEC produces electrochemically and mechanically stable SEI layer. The SiNSs with FEC showed the capacity of over 1500 mA h g−1 with 95% efficiency after 200 cycles.

Original languageEnglish
Pages (from-to)383-389
Number of pages7
JournalChemical Physics Letters
Volume684
DOIs
Publication statusPublished - 2017 Jan 1

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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