標題: Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells
作者: Tiwari, Jitendra N.
Chen, Te-Ming
Pan, Fu-Ming
Lin, Kun-Lin
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: silicon nanocone arrays;Pt catalysts;mass activity;methanol oxidation
公開日期: 1-八月-2008
摘要: Platinum nanoparticles were electrodeposited on ordered silicon nanocones (SNCs) and used as the catalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs). Because of uniform dispersion of Pt nanoparticles and the high surface area, the Pt-SNC electrode exhibited superior electrocatalytic properties toward the methanol electro-oxidation, with the onset potential of 0.08 V (vs. SCE). According to chronoamperometric analysis and CO stripping cyclic voltammetric (CV) study, the Pt/SNC electrode had a stable electro-oxidation activity with a very good CO tolerance. The Si surface oxide surrounding the Pt nanoparticles on the SNCs was suggested to play a key role in improving the CO tolerance via the bifunctional mechanism. (c) 2008 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jpowsour.2008.04.058
http://hdl.handle.net/11536/29120
ISSN: 0378-7753
DOI: 10.1016/j.jpowsour.2008.04.058
期刊: JOURNAL OF POWER SOURCES
Volume: 182
Issue: 2
起始頁: 510
結束頁: 514
顯示於類別:會議論文


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  1. 000257599500015.pdf