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나노입자 연구단
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Achieving breakthrough performance caused by optimized metal foam flow field in fuel cells

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Title
Achieving breakthrough performance caused by optimized metal foam flow field in fuel cells
Author(s)
Ji Eun Park; Wonchan Hwang; Myung Su Lim; Sungjun Kim; Chi-Yeong Ahn; Kim O.-H.; Shim J.-G.; Lee D.W.; Lee J.H.; Cho Y.-H.; Yung-Eun Sung
Publication Date
2019-08
Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.44, no.39, pp.22074 - 22084
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
© 2019 Hydrogen Energy Publications LLCEnhanced mass transport in polymer electrolyte membrane fuel cells (PEMFCs) is required for achieving high performance because concentration losses dominate cell performance. In particular, the flow field is crucial for mass transport. Recently, metal foam has been proposed as an alternative flow field owing to its three-dimensional pores, high porosity, and enhanced electrical conductivity. Here, we inspect the microstructure of various copper foams and investigate its effect as a flow field on PEMFCs. The PEMFCs with the optimized foam flow field deliver the highest performance reported to date. A large contact area and small ribs of the optimized foam flow field are advantageous for mass transfer and ohmic resistance. In addition, the internally generated pressure increases the partial pressure of the reactant, which leads to increased performance. This foam flow field has a significant potential for achieving high cell performance by enhancing the electrochemical reaction of the catalyst
URI
https://pr.ibs.re.kr/handle/8788114/6897
ISSN
0360-3199
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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