標題: Electrocatalytic activity of Pt nanoparticles on karst-rock shaped Ni thin films toward methanol and ethanol oxidation in alkaline solutions
作者: Chen, Chung-Shou
Pan, Fu-Ming
Yu, Hisn-Jung
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 2010
摘要: We prepared Ni thin films with a karst-rock topography on the Si substrate and used the thin film as the electrocatalyst support for the study of methanol and ethanol oxidation in alkaline media. Well-dispersed Pt nanoparticles were pulse-electrodeposited on the rugged Ni thin film, which provided a very large surface for the Pt loading. The cyclic voltammertry (CV) showed that the Pt/Ni electrode had a high electrocatalytic activity toward methanol oxidation compared with blanket Pt. Nanosized Pt particles electrodeposited on the rugged surface of the Ni thin film provide a large amount of electrocatalytic sites for methanol oxidation. Hydroxyl surface groups bound on the Ni karst-rock nanostructures in the alkaline solution may greatly enhance CO electro-oxidation in terms of the bifunctional mechanism. The study demonstrates that the karst-rock shaped Ni thin film is a potential candidate as the Pt electrocatalyst support for direct methanol alkali fuel cells.
URI: http://hdl.handle.net/11536/20992
http://dx.doi.org/10.1149/1.3484656
ISBN: 978-1-56677-820-6
ISSN: 1938-5862
DOI: 10.1149/1.3484656
期刊: POLYMER ELECTROLYTE FUEL CELLS 10, PTS 1 AND 2
Volume: 33
Issue: 1
起始頁: 1665
結束頁: 1671
顯示於類別:會議論文


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  1. 000313331100161.pdf