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Hyun Young Jung, Do Hyung Kim, Hyun Kyung Chun, Sang Hoon Kim, Chae Sun Lim, Ji Young Byun and Yung Joon Jung Towards Engineering Nanoporous Platinum Thin Films for Highly Efficient Catalytic Applications Advanced Energy Materials 1

Version of Record online: 7 SEP 2011 | DOI: 10.1002/aenm.201100402

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Highly engineered nanoporous Pt films formed by the dealloying of Pt-Si alloys have controlled pore morphologies and isotropic open nanopores. A larger porosity leads to the formation of a higher surface area, a higher current density and a lower charge-transfer resistance during methanol electro-oxidation. The Pt film with the highest surface area shows 32-times-higher catalytic activity than Pt/C films.

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