A study on cathode structure and water transport in air-breathing PEM fuel cells

Seong U. Jeong, Eun A. Cho, Hyoung Jhun Kim, Tae Hoon Lim, In Hwan Oh, Sung Hyun Kim

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

For portable electronics, air-breathing PEMFCs are being developed without external air-feeding and humidification systems. To optimize the cathode structure and to investigate characteristics of such air-breathing PEMFCs, the effects of catalyst loading and gas diffusion layer (GDL) properties on the cell performance are examined. Water transport in air-breathing PEMFCs is interpreted in terms of the net water drag coefficient, which was obtained by changing the current density, relative humidity, temperature and the hydrogen stoichiometry to understand the water transport phenomena under various conditions.

Original languageEnglish
Pages (from-to)1089-1094
Number of pages6
JournalJournal of Power Sources
Volume159
Issue number2
DOIs
Publication statusPublished - 2006 Sep 22

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Keywords

  • Air-breathing fuel cell
  • Cathode optimization
  • Dry operation
  • Water transport

ASJC Scopus subject areas

  • Electrochemistry
  • Energy (miscellaneous)
  • Fuel Technology
  • Materials Chemistry

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