dc.citation.conferencePlace |
KO |
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dc.citation.conferencePlace |
부산, 벡스코 |
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dc.citation.title |
2016 Fall Korean Chemical Society Meeting |
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dc.contributor.author |
Kim, Ho Young |
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dc.contributor.author |
Kim, Jae Hyung |
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dc.contributor.author |
Joo, Sang Hoon |
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dc.date.accessioned |
2023-12-19T20:07:02Z |
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dc.date.available |
2023-12-19T20:07:02Z |
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dc.date.created |
2017-01-08 |
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dc.date.issued |
2016-10-14 |
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dc.description.abstract |
Developing highly active and stable cathode catalysts is of pivotal importance for proton exchange membrane fuel cells (PEMFCs). While carbon-supported Pt-based catalysts have so far been the most active cathode catalysts, their durability and single-cell performance are yet to be improved. Herein, we report self-supported mesostructured Pt-based bimetallic (Meso-PtM; M = Ni, Fe, Co, Cu) nanospheres containing an intermetallic phase, combining the beneficial effects of transition metals (M), an intermetallic phase, a 3D interconnected framework, and a mesoporous structure. Meso-PtM nanospheres showed enhanced ORR activity, compared to Pt black and Pt/C catalysts. Notably, Meso-PtNi containing an intermetallic phase exhibited ultrahigh stability, showing enhanced ORR activity even after 50,000 potential cycles, whereas Pt black and Pt/C underwent dramatic degradation. Importantly, Meso-PtNi with an intermetallic phase also demonstrated superior activity and durability when used in a PEMFC single-cell, with record-high initial mass and specific activities. |
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dc.identifier.bibliographicCitation |
2016 Fall Korean Chemical Society Meeting |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/40185 |
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dc.identifier.url |
http://new.kcsnet.or.kr/?mid=abstract_view&uid=36811&page=1&qpage=&word=%EC%A3%BC%EC%83%81%ED%9B%88&wordfield=authorsub&main_number=118 |
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dc.language |
영어 |
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dc.publisher |
대한화학회 |
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dc.title |
Mesostructured Pt-Based Bimetallic Nanospheres Containing an Intermetallic Phase as Ultrastable Self-Supported Oxygen Reduction Electrocatalysts |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2016-10-12 |
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