Enhanced electrocatalytic activity for oxygen reduction over carbon-supported LaMnO3 prepared by reverse Micelle method

Masahiko Hayashi, Hiromi Uemura, Kengo Shimanoe, Norio Miura, Noboru Yamazoe

研究成果: ジャーナルへの寄稿記事

34 引用 (Scopus)

抜粋

Carbon-supported LaMnO3 was prepared by a reverse micelle method. Aqueous solutions of nitrates of La and Mn (A) and N(CH3)4OH (B) were brought into reverse micelle solutions by using NP-5 surfactant and cyclohexane solvent, respectively. Carbon powder was mixed with solution A and B stepwise, and the resulting suspension was subjected to a series of treatments to collect carbon powder loaded with a precursor of the oxide, which was calcined at 600°C under N2 flow to convert the precursor to LaMnO3. The gas diffusion-type oxygen electrode using the carbon-supported oxide thus prepared showed surprisingly high electrocatalytic activity for oxygen reduction. The current density was as high as 300 mA cm-2 at -80 mV vs. Hg/HgO in 8 M KOH at 60°C under air flow. This performance was maintained undisturbed for the 140 h testing period.

元の言語英語
ページ(範囲)268-270
ページ数3
ジャーナルElectrochemical and Solid-State Letters
1
発行部数6
出版物ステータス出版済み - 12 1 1998

    フィンガープリント

All Science Journal Classification (ASJC) codes

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

これを引用