The problem of Ru dissolution from Pt-Ru catalysts during fuel cell operation: analysis and solutions

被引：90

作者：

Antolini, Ermete ^{[1
,2
]}

机构：

[1] Scuola Sci Mat, I-16016 Genoa, Italy

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2011年 / 15卷 / 03期

关键词：

Pt-Ru catalysts; PEM fuel cells; Direct methanol fuel cells; Ruthenium dissolution; Durability; HYDROUS RUTHENIUM OXIDE; SUPPORTED PLATINUM CATALYSTS; PERFORMANCE DEGRADATION; METHANOL ELECTROOXIDATION; OXYGEN-REDUCTION; PTRU/C CATALYSTS; ANODE CATALYST; IN-SITU; ELECTROCATALYSTS; OXIDATION;

D O I：

10.1007/s10008-010-1124-7

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Platinum-ruthenium catalysts are widely used as anode materials in polymer electrolyte fuel cells (PEMFCs) operating with reformate gas and in direct methanol fuel cells (DMFCs). Ruthenium dissolution from the Pt-Ru anode catalyst at potentials higher than 0.5 V vs. DHE, followed by migration and deposition to the Pt cathode can give rise to a decrease of the activity of both anode and cathode catalysts and to a worsening of cell performance. A major challenge for a suitable application of Pt-Ru catalysts in PEMFC and DMFC is to improve their stability against Ru dissolution. The purpose of this paper is to provide a better knowledge of the problem of Ru dissolution from Pt-Ru catalysts and its effect on fuel cell performance. The different ways to resolve this problem are discussed.

引用

页码：455 / 472

页数：18

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