薄いマイクロチャンネル型セパレータを有するPEFCの性能に関する研究 : 凝縮水の生成と電池性能への影響(熱工学,内燃機関,動力など)

概要

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The fuel cell is developed as a power source which is friendly with the environment. To thin the fuel cell is useful to compactness and cost reduction. So, in this study, the fuel cell with thin separators of 0.6mm thickness including microchannels of 0.2mm was fabricated and experimented. Experimental results showed that the hydrophobic treatment of separators is indispensable to drain easily water condensed in the microchannels. Besides, as water produced at the cathode increases with current densities and fills some microchannels and the electrode pores the pressure loss at the cathode gas increases and the performance of the fuel cell decreases due to the reduction of gas diffusivity. However if the humidity of cathode inlet gas is controlled to vaporize produced water corresponding to current densities the thin separator with microchannels of 0.2mm thick could be used without any influence on the performance.
一般社団法人日本機械学会の論文
2003-03-25