Raman study of structural stability of LiCoPO 4 cathodes in LiPF 6 containing electrolytes

  • R. Sharabi
  • , E. Markevich
  • , V. Borgel
  • , G. Salitra
  • , G. Gershinsky
  • , D. Aurbach
  • , G. Semrau
  • , M. A. Schmidt
  • , N. Schall
  • , C. Stinner

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Micro-probe Raman spectroscopy investigation of LiCoPO 4 composite electrodes performed after prolonged cycling in LiPF 6 EC/DMC electrolyte solution revealed total structural degradation of the olivine structure of the electrodes. The electrodes cycled in the identical conditions but in the presence of the HF-scavenging glassy fiber (GF) separators retain their olivine structure unchanged. The reasons for this pronounced difference are discussed.

Original languageEnglish
Pages (from-to)109-114
Number of pages6
JournalJournal of Power Sources
Volume203
DOIs
StatePublished - 1 Apr 2012

Keywords

  • Lithium batteries, Structural degradation
  • Lithium-cobalt phosphate
  • Olivines
  • Raman spectroscopy

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