New approach towards preparation of efficient gas diffusion-type oxygen reduction electrode

Jerzy P. Lukaszewicz, Shin Imaizumi, Masayoshi Yuasa, Kengo Shimanoe, Noboru Yamazoe

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A novel method by combining NAC-FAS (NAnometer-sized Crystal Formation in Alcoholic Solutions) method and mechanical milling treatment was successfully applied for dispersing perovskite type oxide LaMnO3 finely on carbon support. Microscopic observation revealed that nano-sized oxide particles were dispersed fairly well in the carbon support. The gas diffusion-type electrode prepared by means of reducing number and quantity of chemicals exhibited more excellent oxygen reduction activity than the electrodes containing LaMnO 3 prepared by RHP (Reverse Homogeneous Precipitation) method. It allowed current density as high as 300 mA cm-2 at -80 mV (vs. Hg/HgO) in 8 M KOH at 60 °C under air flow.

Original languageEnglish
Pages (from-to)6215-6220
Number of pages6
JournalJournal of Materials Science
Volume41
Issue number19
DOIs
Publication statusPublished - Oct 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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