In situ raman spectroscopic study of LixCoO2 electrodes in propylene carbonate solvent systems

Takashi Itoh, Hajime Sato, Tatsuo Nishina, Tomokazu Matue, Isamu Uchida

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

Simultaneous measurements of in situ Raman spectroscopy and cyclic voltammetry have been carried out for thin film electrodes of LixCoO2 in propylene carbonate containing 1 M LiClO4. The Raman lines of 485 and 587 cm-1 observed at LixCoO2 electrodes were attributed to the A1g and Eg modes of the LiCoO2, respectively. The Raman intensity of two lines changed drastically during the insertion/extraction of lithium ions. This effect can be explained by the reduction of the optical skin depth due to the conductivity change of LixCoO2. Phase transition from Raman-active phase to Raman-inactive phase is also conceivable.

Original languageEnglish
Pages (from-to)333-337
Number of pages5
JournalJournal of Power Sources
Volume68
Issue number2
DOIs
Publication statusPublished - 1997 Oct

Keywords

  • Cobalt
  • Lithium insertion
  • Lithium intercalation
  • Lithium secondary batteries
  • Optical skin depth
  • Raman spectroscopy

ASJC Scopus subject areas

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

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