Characteristics of discharge products in all-solid-state Li-air batteries

Y. Suzuki, K. Kami, Ken Watanabe, N. Imanishi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Abstract The reaction product and reaction site for solid-state lithium-air batteries were examined using a platinum pattern electrode on a lithium conducting solid electrolyte. The cell consisted of a lithium metal anode, a protective layer consisting of polyethylene oxide with the Li(CF3SO2)2N lithium salt, a lithium conducting solid electrolyte of Li1 + x + yAlx(Ge,Ti)2 - xSiyP3 - yO12, and a sputtered platinum striped pattern air electrode. The cell was discharged at 1.0 μA cm- 2 for 300 h and the reaction product was analyzed using Raman spectroscopy and X-ray photoelectron spectroscopy. The reaction product of Li2O2 was observed at the triple phase boundaries of oxygen, platinum and electrolyte, in addition to on the platinum and solid electrolyte surfaces. This result suggests that the oxygen reduction reaction can proceed on the surface of the Li2O2 reaction product.

Original languageEnglish
Article number13707
Pages (from-to)222-227
Number of pages6
JournalSolid State Ionics
Volume278
DOIs
Publication statusPublished - Jul 6 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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