직접메탄올연료전지에서 메탄올 크로스오버에 미치는 인자 연구 = Investigation of Factors Influencing Methanol Crossover in Direct Methanol Fuel Cell

다국어 초록 (Multilingual Abstract)

The amount of methanol crossover was measured with changing the operating condition by using a liquid methanol concentration sensor. Appropriate operating condition was discussed in terms of methanol crossover. Mechanism of methanol crossover was classified into three items which are diffusion, convection and electro-osmosis. Contribution of each mechanism to methanol crossover and the effect of operating condition were analyzed with varying methanol concentration, pressure difference between anode and cathode, current, temperature, and stoichiometry of anode fuel. Among the three mechanisms diffusion affected mostly and electro-osmosis effect was observed only under high methanol concentration.

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