Enhanced performance and improved interfacial properties of polymer electrolyte membrane fuel cells fabricated using sputter-deposited Pt thin layers |
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Authors: | Yong-Hun Cho Yoon-Hwan Cho In-Su Park Yung-Eun Sung |
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Affiliation: | a School of Chemical & Biological Engineering & Research Center for Energy Conversion and Storage, Seoul National University, San 56-1, Sillim-dong, Gwanak-gu, Seoul 151-744, Republic of Korea b Advanced Energy Materials Processing Laboratory, Korea Institute of Science & Technology, Seoul 130-650, South Korea |
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Abstract: | For this study, catalyst layers for polymer electrolyte membrane fuel cells (PEMFC) were prepared by spraying and sputtering to deposit Pt amount of 0.1 and 0.01 mg cm−2, respectively. These Pt layers were then assembled to fabricate membrane electrode assemblies (MEA) having either single- or double-layered catalysts. The PEM fuel cell with double layers showed a current density of 777 mA cm−2 at a cell voltage of 0.6 V, which is a higher current density than state-of-the-art fuel cells at 643 mA cm−2. These results indicate that Pt loading in state-of-the-art PEMFCs could be reduced by approximately 50% with no performance loss by using both spraying and sputtering method in the MEA fabrication process. |
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Keywords: | Polymer electrolyte membrane fuel cell Sputtering Membrane electrode assembly Catalyst layer Spraying |
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