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Reduction of methanol crossover by thin cracked metal barriers at the interface between membrane and electrode in direct methanol fuel cells

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Title
Reduction of methanol crossover by thin cracked metal barriers at the interface between membrane and electrode in direct methanol fuel cells
Author(s)
Sungjun Kim; Segeun Jang; Sang Moon Kim; Chi-Yeong Ahn; Wonchan Hwang; Yong-Hun Cho; Yung-Eun Sung; Mansoo Choi
Publication Date
2017-09
Journal
JOURNAL OF POWER SOURCES, v.363, no., pp.153 - 160
Publisher
ELSEVIER SCIENCE BV
Abstract
This work reports the successful reduction in methanol crossover by creating a thin cracked metal barrier at the interface between a Nafion® membrane and an electrode in direct methanol fuel cells (DMFCs). The cracks are generated by simple mechanical stretching of a metal deposited Nafion® membrane as a result of the elastic mismatch between the two attached surfaces. The cracked metal barriers with varying strains (∼0.5 and ∼1.0) are investigated and successfully incorporated into the DMFC. Remarkably, the membrane electrode assembly with the thin metal crack exhibits comparable ohmic resistance as well as reduction of methanol crossover, which enhanced the device performance. © 2017 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/4238
ISSN
0378-7753
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
22. Kim_et_al-2017-Journal of Power sources.pdfDownload

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