Electromotive force measurements of LiCoO2 electrode on a lithium ion-conducting glass ceramics under mechanical stress

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Abstract

Two LiCoO2 dense film electrodes were prepared on both surfaces of a lithium ion-conducting glass ceramics, and electromotive force measurements were preformed between the film electrodes under mechanical compressive and tensile stresses by four-point bending tests. Electromotive force appeared immediately after applying the stress and disappeared after releasing the stress. The larger stress was applied, the larger electromotive force was observed. These results clearly demonstrated that the lithium chemical potential in the LiCoO2 electrode varies under mechanical stress. The influence of the mechanical stress on the lithium chemical potential was discussed based on the relation between the CoO2 interlayer distance and the lithium concentration in LiCoO2.

Original languageEnglish
Pages (from-to)75-78
Number of pages4
JournalSolid State Ionics
Volume285
DOIs
Publication statusPublished - 2016 Feb 1

Keywords

  • All-solid-state lithium ion batteries
  • Electromotive force
  • Lithium chemical potential
  • Mechanical stress

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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