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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201703460
|2 doi
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|a pubmed24n0924.xml
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|a (DE-627)NLM277213444
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|a (NLM)29052926
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Ma, Yanling
|e verfasserin
|4 aut
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|a Platinum-Based Nanowires as Active Catalysts toward Oxygen Reduction Reaction
|b In Situ Observation of Surface-Diffusion-Assisted, Solid-State Oriented Attachment
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Facile fabrication of advanced catalysts toward oxygen reduction reaction with improving activity and stability is significant for proton-exchange membrane fuel cells. Based on a generic solid-state reaction, this study reports a modified hydrogen-assisted, gas-phase synthesis for facile, scalable production of surfactant-free, thin, platinum-based nanowire-network electrocatalysts. The free-standing platinum and platinum-nickel alloy nanowires show improvements of up to 5.1 times and 10.9 times for mass activity with a minimum 2.6% loss after an accelerated durability test for 10k cycles; 8.5 times and 13.8 times for specific activity, respectively, compared to commercial Pt/C catalyst. In addition, combined with a wet impregnation method, different substrate-materials-supported platinum-based nanowires are obtained, which paves the way to practical application as a next-generation supported catalyst to replace Pt/C. The growth stages and formation mechanism are investigated by an in situ transmission electron microscopy study. It reveals that the free-standing platinum nanowires form in the solid state via metal-surface-diffusion-assisted oriented attachment of individual nanoparticles, and the interaction with gas molecules plays a critical role, which may represent a gas-molecular-adsorbate-modified growth in catalyst preparation
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|a Journal Article
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|a in situ TEM
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|a oriented attachment
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|a oxygen reduction reaction
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|a platinum-based nanowires
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|a solid-state reaction
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|a Gao, Wenpei
|e verfasserin
|4 aut
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1 |
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|a Shan, Hao
|e verfasserin
|4 aut
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|a Chen, Wenlong
|e verfasserin
|4 aut
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|a Shang, Wen
|e verfasserin
|4 aut
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|a Tao, Peng
|e verfasserin
|4 aut
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|a Song, Chengyi
|e verfasserin
|4 aut
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|a Addiego, Chris
|e verfasserin
|4 aut
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|a Deng, Tao
|e verfasserin
|4 aut
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|a Pan, Xiaoqing
|e verfasserin
|4 aut
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|a Wu, Jianbo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 46 vom: 14. Dez.
|w (DE-627)NLM098206397
|x 1521-4095
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|g volume:29
|g year:2017
|g number:46
|g day:14
|g month:12
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|u http://dx.doi.org/10.1002/adma.201703460
|3 Volltext
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