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나노입자 연구단
나노입자 연구단
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Self-Assembled Dendritic Pt Nanostructure with High-Index Facets as Highly Active and Durable Electrocatalyst for Oxygen Reduction

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Title
Self-Assembled Dendritic Pt Nanostructure with High-Index Facets as Highly Active and Durable Electrocatalyst for Oxygen Reduction
Author(s)
Youngjin Jang; Kwang-Hyun Choi; Dong Young Chung; Ji Eun Lee; Namgee Jung; Yung-Eun Sung
Publication Date
2017-08
Journal
ChemSusChem, v.10, no.15, pp.3063 - 3068
Publisher
WILEY-V C H VERLAG GMBH
Abstract
The durability issues of Pt catalyst should be resolved for the commercialization of proton exchange membrane fuel cells. Nanocrystal structures with high-index facets have been recently explored to solve the critical durability problem of fuel cell catalysts as Pt catalysts with high-index facets can preserve the ordered surfaces without change of the original structures. However, it is very difficult to develop effective and practical synthetic methods for Pt-based nanostructures with high-index facets. The current study describes a simple one-pot synthesis of self-assembled dendritic Pt nanostructures with electrochemically active and stable high-index facets. Pt nanodendrites exhibited 2 times higher ORR activity and superior durability (only 3.0% activity loss after 10000 potential cycles) than a commercial Pt/C. The enhanced catalytic performance was elucidated by the formation of well-organized dendritic structures with plenty of reactive interfaces among 5 nm-sized Pt particles and the coexistence of low- and high-index facets on the particles. (c) 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
https://pr.ibs.re.kr/handle/8788114/4350
ISSN
1864-5631
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
26. Jang_et_al-2017-ChemSusChem.pdfDownload

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