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A Low-Density Graphite-Polymer Composite as a Bipolar Plate for Proton Exchange Membrane Fuel Cells
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  • Journal title : Carbon letters
  • Volume 14, Issue 1,  2013, pp.40-44
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2012.14.1.040
 Title & Authors
A Low-Density Graphite-Polymer Composite as a Bipolar Plate for Proton Exchange Membrane Fuel Cells
Dhakate, S.R.; Sharma, S.; Mathur, R.B.;
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 Abstract
The bipolar plate is the most important and most costly component of proton exchange membrane fuel cells. The development of a suitable low density bipolar plate is scientifically and technically challenging due to the need to maintain high electrical conductivity and mechanical properties. Here, bipolar plates were developed from different particle sizes of natural and expanded graphite with phenolic resin as a polymeric matrix. It was observed that the particle size of the reinforcement significantly influences the mechanical and electrical properties of a composite bipolar plate. The composite bipolar plate based on expanded graphite gives the desired mechanical and electrical properties as per the US Department of Energy target, with a bulk density of 1.55 as compared to that of ~1.87 for a composite plate based on natural graphite (NG). Although the bulk density of the expanded-graphite-based composite plate is ~20% less than that of the NG-based plate, the I-V performance of the expanded graphite plate is superior to that of the NG plate as a consequence of the higher conductivity. The expanded graphite plate can thus be used as an electromagnetic interference shielding material.
 Keywords
electrical conductivity;mechanical properties;bipolar plate;proton exchange membrane fuel cell;
 Language
English
 Cited by
1.
PEMFC용 탄성 탄소 복합재료 분리판의 기계적 강도 및 전기전도도에 미치는 탄소섬유 필라멘트와 흑연 섬유의 영향,이재영;이우금;임형렬;정규범;이홍기;

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