High-performance oxygen reduction catalyst using carbon-supported La-Mn-based perovskite-type oxide

Masayoshi Yuasa, Kengo Shimanoe, Yasutake Teraoka, Noboru Yamazoe

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

To obtain a highly active and low-cost oxygen reduction electrode, as compared with a Pt-loaded carbon electrode, a nano-sized La-Mn-based perovskite-type oxide on a carbon support was prepared through the reverse-micelle method. An gas diffusion oxygen reduction electrode using nano-sized La0.4Ca0.6Mn0.9Fe 0.1O3 as a electrocatalyst allowed a electrode potential as high as -50 mV (vs HgHgO) in 9 moll NaOH at 500 mA cm-2. This electrode potential is much higher than the electrode potential of carbon-supported Pt nanoparticles at the same current density. This result suggests that nano-sized La0.4Ca0.6Mn0.9Fe 0.1O3 is a promising candidate as an alternative oxygen reduction catalyst of Pt nanoparticles.

Original languageEnglish
Pages (from-to)A67-A69
JournalElectrochemical and Solid-State Letters
Volume14
Issue number5
DOIs
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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