A durable PtRu/C catalyst with a thin protective layer for direct methanol fuel cells

被引：18

作者：

Shimazaki, Yuzuru ^{[2
]}

Hayasaka, Sho ^{[1
]}

Koyama, Tsubasa ^{[1
]}

Nagao, Daisuke ^{[1
]}

Kobayashi, Yoshio ^{[3
]}

Konno, Mikio ^{[1
]}

机构：

[1] Tohoku Univ, Dept Chem Engn, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Hitachi Ltd, Mat Res Lab, Hitachi, Ibaraki 3191292, Japan

[3] Ibaraki Univ, Dept Biomol Funct Engn, Coll Engn, Hitachi, Ibaraki 3168511, Japan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 351卷 / 02期

关键词：

Direct methanol fuel cell; Anode catalyst; PtRu nanoparticle; Silane-coupling agent; Durability; PLATINUM; NANOPARTICLES;

D O I：

10.1016/j.jcis.2010.07.067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A methanol oxidation catalyst with improved durability in acidic environments is reported. The catalyst consists of PtRu alloy nanoparticles on a carbon support that were stabilized with a silane-coupling agent. The catalyst was prepared by reducing ions of Pt and Ru in the presence of a carbon support and the silane-coupling agent. The careful choice of preparatory conditions such as the concentration of the silane-coupling agent and solution pH resulted in the preparation of catalyst in which the PtRu nanoparticles were dispersively adsorbed onto the carbon support. The catalytic activity was similar to that of a commercial catalyst and was unchanged after immersion in sulfuric acid solution for 1000 h, suggesting the high durability of the PtRu catalyst for the anode of direct methanol fuel cells. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：580 / 583

页数：4

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