An alternating pulse electrochemical methanol concentration sensor for direct methanol fuel cells

被引:19
作者
Geng, Jiangtao [1 ,2 ]
Li, Xiangyi [1 ]
Sun, Gongquan [1 ]
Yi, Baolian [1 ]
机构
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
关键词
Electrochemical methanol concentration sensor; Alternating pulse voltage; Stability; Direct methanol fuel cells; PERFORMANCE; CROSSOVER; DESIGN; DMFC;
D O I
10.1016/j.snb.2010.03.047
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An electrochemical methanol concentration sensor using an alternating pulse working voltage was developed for direct methanol fuel cells. The sensor was constructed based on the membrane electrode assemblies of fuel cells, but its two electrodes have the same structure and components, and methanol solution was fed into both of the electrodes simultaneously. Owing to the alternating pulse voltage and the special structure of the sensor, methanol oxidation and proton reduction reactions occur alternately at each of the two electrodes, which is favorable for self-cleaning the electrode surface and maintaining a catalytically active surface. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:612 / 617
页数:6
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