期刊
ELECTROCHEMICAL AND SOLID STATE LETTERS
卷 12, 期 6, 页码 B94-B96出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3106184
关键词
electrochemical electrodes; electrochemistry; fluorescence; free radical reactions; organic compounds; oxidation; proton exchange membrane fuel cells; reduction (chemical); spectrochemical analysis
资金
- New Energy and Industrial Technology Development Organization (NEDO), Japan
A fluorescence probe method, which enables highly sensitive detection of OH radicals (center dot OH) by forming a stable fluorescent product, was applied to a model reaction system of polymer electrolyte fuel cells (PEFCs). center dot OH was successfully detected under open-circuit condition with a homemade test cell having reservoirs of a coumarin probe solution at both anode and cathode electrodes. The experiments with H(2)O(2) and Fe(2+) in the probe solution suggested that the center dot OH is produced via electrode reduction and oxidation of H(2)O(2) at the anode and cathode, respectively.
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