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  A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte

Li, G., Jiang, L., Zhang, B., Jiang, Q., Su, D. S., & Sun, G. (2013). A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in alkaline electrolyte. International Journal of Hydrogen Energy, 38(29), 12767-12773. doi:10.1016/j.ijhydene.2013.07.076.

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 Urheber:
Li, Guanglan1, 2, Autor
Jiang, Luhua1, Autor
Zhang, Bingsen3, Autor
Jiang, Qian1, 2, Autor
Su, Dang Sheng3, 4, Autor           
Sun, Gongquan1, Autor
Affiliations:
1Dalian 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              
3Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China, ou_persistent22              
4Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Schlagwörter: Alcohol electro-oxidation; Alkaline electrolyte; Electrocatalysts; Platinum–lead oxide
 Zusammenfassung: A highly active porous Pt–PbOx/C composite toward alcohol (methanol, ethanol and ethylene glycol) oxidation in alkaline media is synthesized via a modified polyol method. The crystalline structure, morphology, elemental distribution and the chemical state of metals on surface of the Pt–PbOx/C are evaluated by X-ray diffraction, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The large porous Pt–PbOx/C composite are composed of both Pt and PbOx primary nanoparticles of 1–2 nm which mixed geometrically with unchanged electronic environments of Pt and PbOx. The potentiodynamic and potentiostatic measurements for alcohol electro-oxidation over Pt–PbOx/C in alkaline media show that the activities toward C1–C2 alcohol electro-oxidation were improved remarkably compared to the commercial Pt/C due to both geometric effect, i.e., the addition of PbOx to Pt provides steric hindrance for CO adsorption, and bi-functional effect, i.e., OHad species could be generated over PbOx surface at lower potentials which facilitates the dehydrogenation of the intermediate methoxy.

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Sprache(n): eng - English
 Datum: 2013-05-272013-07-202013-08-202013-09-30
 Publikationsstatus: Erschienen
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.ijhydene.2013.07.076
 Art des Abschluß: -

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Titel: International Journal of Hydrogen Energy
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Oxford : Elsevier
Seiten: - Band / Heft: 38 (29) Artikelnummer: - Start- / Endseite: 12767 - 12773 Identifikator: ISSN: 0360-3199
CoNE: https://pure.mpg.de/cone/journals/resource/954925521672