Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep26503
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Funding
- Global Frontier R&D Program of the Center for Multiscale Energy Systems - National Research Foundation under the Ministry of Education, Science and Technology, Korea [2011-0031561]
- Institute for Basic Science (IBS) in Korea [IBS-R006-G1]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) [2013R1A1A2061636]
- Ministry of Education
- National Research Foundation of Korea [2013R1A1A2061636] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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