Anode Catalysts for the Direct Dimethyl Ether Fuel Cell

被引：6
|
作者：
Li, Qing [1 ]
Wu, Gang [1 ]
Johnston, Christina M. [1 ]
Zelenay, Piotr [1 ]
机构：
[1] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA
来源：
POLYMER ELECTROLYTE FUEL CELLS 11 | 2011年 / 41卷 / 01期
关键词：
METHANOL ELECTROOXIDATION; ELECTRODE; DME; CROSSOVER; MECHANISM;
D O I：
10.1149/1.3635726
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
For the last decade, dimethyl ether (DME) has been considered a promising alternative fuel for direct fuel cells because of several advantages over methanol. In this work, PtRu catalysts with a wide range of Pt-to-Ru ratios were screened for the direct DME fuel cell (DDMEFC) performance for the first time. Overall, Pt50Ru50 performs best in the high and middle voltage ranges, whereas Pt80Ru20 performs best at low voltages. A maximum power density of 0.10 W/cm(2) is achieved at a current density of 0.37 A/cm(2). In spite of using gaseous DME feed, the measured performance exceeds the best previously published results. The anode activity and fuel crossover of a DDMEFC were investigated in this work and compared to those of a DMFC. The adsorption and electrooxidation of DME on Pt black catalyst were also studied in half-cell electrochemical measurements.
引用
收藏
页码：1969 / 1977
页数：9
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