Novel O2-enhanced methanol oxidation performance at Pt-Ru-C sputtered anode in direct methanol fuel cell

被引：9
作者：
Shironita, Sayoko [1 ]
Ueda, Masafumi [1 ]
Matsumoto, Yosuke [1 ]
Umeda, Minoru [1 ]
机构：
[1] Nagaoka Univ Technol, Fac Engn, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan
来源：
JOURNAL OF POWER SOURCES | 2013年 / 243卷
基金：
日本学术振兴会;
关键词：
Pt-Ru-C anode; Co-sputtering technique; O-2-enhanced methanol oxidation; Direct methanol fuel cell; Membrane electrode assembly; ELECTRODE; ELECTROOXIDATION; CATALYSTS; DEGRADATION; MECHANISM; ALLOYS;
D O I：
10.1016/j.jpowsour.2013.06.054
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：
We have developed a novel anode catalyst for the direct methanol fuel cell (DMFC). A Pt-Ru-C electrode was prepared by a co-sputtering technique and compared with Pt and Pt-Ru sputtered electrodes for the methanol electro-oxidation reaction. The prepared Pt-Ru-C electrode with a specific atomic ratio showed a remarkable O-2-enhanced methanol oxidation performance by O-2 addition to methanol as a fuel. For practical utilization, the relationship between the O-2-enhanced methanol oxidation activity and the thermal stability of the Pt-Ru-C sputtered electrode was evaluated using a post-annealing treatment. It is found that the O-2-enhanced methanol oxidation activity of the Pt-Ru-C electrodes is retained if the annealing temperature is less than or equal to 100 degrees C. Finally, the DMFC performance was assessed using a single DMFC cell incorporating a membrane electrode assembly with Pt-Ru-C which was hotpressed at 100 degrees C. The O-2-enhanced methanol oxidation was observed at a single DMFC cell also. Moreover, the enhanced reaction was recognized in DMFC power generation by feeding methanol and oxygen to the anode and oxygen to the cathode. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：635 / 640
页数：6
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