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Graphite foil based assembled bipolar plates for polymer electrolyte fuel cells

Authors
  • Ji, Sanghoon1
  • Hwang, Yong-Sheen2
  • Park, Taehyun3
  • Lee, Yoon Ho3
  • Paek, Jun Yeol3
  • Chang, Ikwhang1
  • Lee, Min Hwan4
  • Cha, Suk Won3
  • 1 Seoul National University, Department of Intelligent Convergence Systems, Daehak-dong, Gwanak-gu, Seoul, 151-742, South Korea , Seoul (South Korea)
  • 2 Hyundai Motor Company, Fuel Cell Vehicle Team, 104 Mabuk-dong, Giheung-gu, Yongin, 446-912, South Korea , Yongin (South Korea)
  • 3 Seoul National University, School of Mechanical and Aerospace Engineering, Daehak-dong, Gwanak-gu, Seoul, 151-742, South Korea , Seoul (South Korea)
  • 4 University of California, Merced, School of Engineering, 5200 North Lake Road, Merced, CA, 95343, USA , Merced (United States)
Type
Published Article
Journal
International Journal of Precision Engineering and Manufacturing
Publisher
Korean Society for Precision Engineering
Publication Date
Nov 29, 2012
Volume
13
Issue
12
Pages
2183–2186
Identifiers
DOI: 10.1007/s12541-012-0289-7
Source
Springer Nature
Keywords
License
Yellow

Abstract

Graphite foil has been considered as a promising bipolar plate material in polymer electrolyte fuel cells due to its high electrical conductance and high corrosion resistance as well as low manufacturing costs. However, the highly flexible character of graphite foil led to physical deformation under external mechanical and thermal stimuli during fuel cell operations. In this study, we show a modified bipolar plate to overcome the weakness by combining with a mechanically sturdy component — polycarbonate plate. A unit cell with the assembled bipolar plates showed stable powering behaviors under thermal cycling. There was no significant difference in ohmic resistance between a unit cell with the assembled bipolar plates and a unit cell with graphite plates.

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