Platinized mesoporous tungsten carbide for electrochemical methanol oxidation

被引：127

作者：

Ganesan, Raman ^{[1
]}

Ham, Dong Jin ^{[1
]}

Lee, Jae Sung ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Ecofriendly Catalysis & Energy Lab NRL, Dept Chem Engn, Pohang 790784, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 10期

关键词：

Pt/WC; electrocatalysts; mesoporous; methanol; fuel cells;

D O I：

10.1016/j.elecom.2007.08.002

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Mesoporous WC with hexagonal crystal structure was synthesized by a surfactant-assisted polymer method. A new electrocatalyst composed of a small amount of Pt supported on the mesoporous WC exhibited higher activity for electrooxidation of methanol than microporous Pt/WC or Pt/W2C as well as commercial Pt-Ru(1:1)/C catalysts. The mesoporosity and the phase of WC appear important for the high activity. Compared to the commercial Pt-Ru/C catalyst, the Pt/WC (mesoporous) showed the higher activity per mass of Pt by a factor of six even without Ru. Since the catalyst is also stable in electrochemical environment, it could become an alternative electrocatalyst for direct methanol fuel cells. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：2576 / 2579

页数：4

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