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  Bio-inspired Construction of Advanced Fuel Cell Cathode with Pt Anchored in Ordered Hybrid Polymer Matrix

Xia, Z., Wang, S., Jiang, L., Sun, H., Liu, S., Fu, X., et al. (2015). Bio-inspired Construction of Advanced Fuel Cell Cathode with Pt Anchored in Ordered Hybrid Polymer Matrix. Scientific Reports, 5: 16100. doi:10.1038/srep16100.

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 Urheber:
Xia, Zhangxun1, 2, Autor
Wang, Suli1, Autor
Jiang, Luhua1, Autor
Sun, Hai1, Autor
Liu, Shuang1, Autor
Fu, Xudong1, 2, Autor
Zhang, Bing Sen3, Autor           
Su, Dang Sheng4, Autor           
Wang, Jianqiang5, Autor
Sun, Gongquan1, Autor
Affiliations:
1Division of Fuel Cell & Battery, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China, ou_persistent22              
2University of Chinese Academy of Sciences, Beijing 100039, China, ou_persistent22              
3Shenyang National Laboratory for Materials Science Institute of Metal Research, Chinese Academy of Science, ou_persistent22              
4Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
5Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China, ou_persistent22              

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Schlagwörter: Electrocatalysis | Fuel cells | Nanowires
 Zusammenfassung: The significant use of platinum for catalyzing the cathodic oxygen reduction reactions (ORRs) has hampered the widespread use of polymer electrolyte membrane fuel cells (PEMFCs). The construction of well-defined electrode architecture in nanoscale with enhanced utilization and catalytic performance of Pt might be a promising approach to address such barrier. Inspired by the highly efficient catalytic processes in enzymes with active centers embedded in charge transport pathways, here we demonstrate for the first time a design that allocates platinum nanoparticles (Pt NPs) at the boundaries with dual-functions of conducting both electrons by aid of polypyrrole and protons via Nafion® ionomer within hierarchical nanoarrays. By mimicking enzymes functionally, an impressive ORR activity and stability is achieved. Using this brand new electrode architecture as the cathode and the anode of a PEMFC, a high mass specific power density of 5.23 W mg-1Pt is achieved, with remarkable durability. These improvements are ascribed to not only the electron decoration and the anchoring effects from the Nafion® ionomer decorated PPy substrate to the supported Pt NPs, but also the fast charge and mass transport facilitated by the electron and proton pathways within the electrode architecture.

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Sprache(n): eng - English
 Datum: 2015-06-122015-10-012015-11-05
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1038/srep16100
 Art des Abschluß: -

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Titel: Scientific Reports
  Kurztitel : Sci. Rep.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London, UK : Nature Publishing Group
Seiten: - Band / Heft: 5 Artikelnummer: 16100 Start- / Endseite: - Identifikator: Anderer: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322