Effective ionic-liquid microemulsion based electrodeposition of mesoporous Co-Pt films for methanol oxidation catalysis in alkaline media
Serrà, Albert (Universitat de Barcelona. Institut de Nanociència i Nanotecnologia)
Gomez, Elvira (Universitat de Barcelona. Institut de Nanociència i Nanotecnologia)
Golosovsky, Igor V. (National Research Centre 'Kurchatov Institute')
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Vallés, Elisa (Universitat de Barcelona. Institut de Nanociència i Nanotecnologia)

Data:	2016
Resum:	Pt-based direct methanol fuel cells are attracting increasing interest as environmentally friendly alternative energy sources. However, the high price of Pt and the difficulty to prepare favourable morphologies for catalysis (e. g. , mesoporous materials) are hampering their development into feasible products. Here, we demonstrate a novel approach to efficiently grow mesoporous films of Pt-poor alloys (CoPt and CoPt), based on electrodeposition in ionic liquid-in-water (IL/W) microemulsions. The high proportion of the electrolytic aqueous solution in the IL/W microemulsion favors a significant deposition rate, while the presence of IL drops induces the formation of highly mesoporous films. The mesoporous alloys, with pores in the 8-11 nm range, exhibit excellent durability in acidic and alkaline aggressive media, maintaining their peculiar morphology. The structures are very efficient for the catalysis of methanol electro-oxidation in alkaline media, with minimal poisoning of the catalysts. These results pave the way to develop simple, versatile environmentally friendly fuel cell catalysts to commercialize new viable ecological alternative energy sources.
Ajuts:	Ministerio de Economía y Competitividad TEC2014-51940-C2-2-R Ministerio de Economía y Competitividad SEV-2013-0295 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014-SGR-1015
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Aggressive media ; Alternative energy source ; Environmentally friendly alternatives ; Environmentally friendly fuels ; Ionic liquid microemulsions ; Methanol electrooxidation ; Methanol Oxidation ; Peculiar morphology
Publicat a:	Journal of materials chemistry, Vol. 4, issue 20 (May 2016) , p. 7805-7814, ISSN 2050-7496

DOI: 10.1039/c6ta02035f

Preprint 17 p, 892.4 KB

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