H2O2 Decomposition Reaction as Selecting Tool for Catalysts in Li-O-2 Cells

V. Giordani, S. A. Freunberger, P. G. Bruce, J-M Tarascon, D. Larcher

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)

Abstract

The decomposition reaction of H2O2 aqueous solutions (H2O2 -> H2O + 1/2O(2)) catalyzed by transition metal oxide powders has been compared with the charging voltage of nonaqueous Li-O-2 cells containing the same catalyst. An inverse linear relationship between Ln k (rate constant for the H2O2 decomposition) and the charging voltage has been found, despite differences in media and possible mechanistic differences. The results suggest that the H2O2 decomposition may be a reliable, useful, and fast screening tool for materials that promote the charging process of the Li-O-2 battery and may ultimately give insight into the charging mechanism. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3494045] All rights reserved.

Original languageEnglish
Pages (from-to)A180-A183
Number of pages4
JournalElectrochemical and Solid-State Letters
Volume13
Issue number12
DOIs
Publication statusPublished - 2010

Keywords

  • HYDROGEN-PEROXIDE
  • AIR BATTERIES
  • LITHIUM
  • ELECTROLYTE
  • PERFORMANCE
  • CO3O4

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