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High-performance fuel cell with stretched catalyst-coated membrane: One-step formation of cracked electrode

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Title
High-performance fuel cell with stretched catalyst-coated membrane: One-step formation of cracked electrode
Author(s)
Kim S.M.; Chi-Yeong Ahn; Cho Y.-H.; Sungjun Kim; Wonchan Hwang; Jang S.; Shin S.; Lee G.; Yung-Eun Sung; Choi M.
Publication Date
2016-05
Journal
SCIENTIFIC REPORTS, v.6, no., pp.26503 -
Publisher
NATURE PUBLISHING GROUP
Abstract
We have achieved performance enhancement of polymer electrolyte membrane fuel cell (PEMFC) though crack generation on its electrodes. It is the first attempt to enhance the performance of PEMFC by using cracks which are generally considered as defects. The pre-defined, cracked electrode was generated by stretching a catalyst-coated Nafion membrane. With the strain-stress property of the membrane that is unique in the aspect of plastic deformation, membrane electrolyte assembly (MEA) was successfully incorporated into the fuel cell. Cracked electrodes with the variation of strain were investigated and electrochemically evaluated. Remarkably, mechanical stretching of catalyst-coated Nafion membrane led to a decrease in membrane resistance and an improvement in mass transport, which resulted in enhanced device performance.
URI
http://pr.ibs.re.kr/handle/8788114/3153
DOI
10.1038/srep26503
ISSN
2045-2322
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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