Electrocatalysts for methanol oxidation with ultra low content of Pt and Ru

被引：71

作者：

Ando, Yuji ^{[1
]}

Sasaki, Kotaro ^{[2
]}

Adzic, Radoslav ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058569, Japan

[2] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 06期

关键词：

Methanol oxidation; Platinum; Ruthenium; Under potential deposition; Direct methanol fuel cells; O-2; REDUCTION; MONOLAYER ELECTROCATALYSTS; PLATINUM MONOLAYER; CARBON-MONOXIDE; FUEL-CELL; METAL; ELECTROOXIDATION; NANOPARTICLES; CATALYSTS; SN;

D O I：

10.1016/j.elecom.2009.03.031

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We have developed efficient electrocatalysts for methanol oxidation using new synthetic method facilitating deposition of Pt-Ru very thin nanoplatelets on carbon nanoparticles The method involves oxidation of carbon support, adsorption of Pb(2+), its reduction and galvanic displacement of Pb(0) by Pt and/or Ru. The Pt mass activity of this catalyst is about 10 times higher than that of the commercial Pt-Ru/C. The catalyst with the 1:1 Pt/Ru ratio displayed the highest methanol oxidation activity per surface Pt atom. Our results demonstrate the new synthetic method that yields the catalyst with potential for solving the problem of high Pt loading in direct methanol fuel cell anodes. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1135 / 1138

页数：4

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