Gas diffusion electrodes for polymer electrolyte fuel cells using novel organic/inorganic hybrid electrolytes: Effect of carbon black addition in the catalyst layer

Osamu Nishikawa, Kazuo Doyama, Kenji Miyatake, Hiroyuki Uchida, Masahiro Watanabe

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We have prepared novel gas diffusion electrodes for polymer electrolyte fuel cells (PEFC) using new organic/inorganic hybrid electrolytes. The catalyst layers were prepared by mixing 3-(trihydroxysilyl)-1-propanesulfonic acid [(THS)Pro-SO3H], 1,8-bis(triethoxysilyl) octane (TES-Oct), Pt loaded carbon black (Pt-CB) and water, followed by a sol-gel reaction. It was found that addition of uncatalyzed carbon black (u-CB) into the cathode catalyst layer enhanced the performance at high current density region, due to an increase in the gas diffusion rate. The optimum volume ratio of u-CB/Pt-CB was found to be 0.1, at which the gas diffusivity and the catalyst utilization are well balanced.

Original languageEnglish
Pages (from-to)2719-2723
Number of pages5
JournalElectrochimica Acta
Volume50
Issue number13
DOIs
Publication statusPublished - 2005 Apr 30
Externally publishedYes

Keywords

  • Carbon black
  • Fuel cell
  • Gas diffusion electrodes
  • Organic/inorganic hybrid materials
  • PEFC

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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