Detection of OH radicals as the effect of Pt particles in the membrane of polymer electrolyte fuel cells

被引：60
|
作者：
Ohguri, Nobuaki [1 ]
Nosaka, Atsuko Y. [1 ]
Nosaka, Yoshio [1 ]
机构：
[1] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan
来源：
JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 15期
关键词：
OH radical; Fluorescence probe; Polymer electrolyte fuel cell; Deterioration; Nafion; Pt dispersion; DEGRADATION MECHANISM; HYDROGEN-PEROXIDE; FLUORESCENCE; DURABILITY; CROSSOVER;
D O I：
10.1016/j.jpowsour.2010.02.010
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：
The formation of OH radicals ((OH)-O-center dot) for polymer electrolyte fuel cell (PEFC) was investigated with a home-made test cell by means of a fluorescence probe method for several kinds of membrane electrode assembly (MEA) consisting of Nation. After 12-h operation under open circuit condition, (OH)-O-center dot was detected at both the anode and the cathode sides but the amount was much larger for the anode side. The formation of (OH)-O-center dot considerably depended on the amount of Pt/C catalyst loaded in the MEA. Dispersion of Pt particles in Nation membranes increased the (OH)-O-center dot formation, but Pt ions did not. Based on the results, the formation mechanism was discussed. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：4647 / 4652
页数：6
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