Using sputter deposition to increase CO tolerance in a proton-exchange membrane fuel cell

被引：29

作者：

Haug, AT ^{[1
]}

White, RE

Weidner, JW

Huang, W

Shi, S

Rana, N

Grunow, S

Stoner, TC

Kaloyeros, AE

机构：

[1] Univ S Carolina, Dept Chem Engn, Ctr Electrochem Engn, Columbia, SC 29208 USA

[2] Plug Power Inc, Latham, NY 12110 USA

[3] SUNY Albany, Sch Nanosci & Engn, Albany, NY 12203 USA

[4] SUNY Albany, Inst Math, Energy & Environm Applicat Ctr, Albany, NY 12203 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2002年 / 149卷 / 07期

关键词：

D O I：

10.1149/1.1479727

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Placing a layer of Ru atop a Pt anode increases the carbon monoxide tolerance of proton-exchange membrane fuel cells when oxygen is added to the fuel stream. Sputter-deposited Ru filter anodes composed of a single Ru layer and three Ru layers separated by Nafion-carbon ink, respectively, were compared to Pt, Pt: Ru alloy, and an ink-based Ru filter anodes. The amount of Pt in each anode was 0.15 mg/cm(2) and the amount of Ru in each Ru-containing anode was 0.080 mg/cm(2). For an anode feed consisting of hydrogen, 200 ppm CO, and 2% O-2 (in the form of an air bleed!, all Ru filter anodes outperformed the Pt: Ru alloy. The performance of the Pt + single-layer sputtered Ru filter was double that of the Pt: Ru alloy (0.205 vs. 0.103 A/cm(2) at 0.6 V). The performance was also significantly greater than that of the ink-based Ru filter (0.149 A/cm(2) at 0.6 V). Within the filter region of the anode, it is likely that the decreased hydrogen kinetics of the Ru (compared to Pt) allow for more of the OHads formed from oxygen in the fuel stream to oxidize adsorbed CO to CO2. (C) 2002 The Electrochemical Society.

引用

页码：A868 / A872

页数：5

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