2510 固体高分子燃料電池単セルの負荷電流と供給ガス量に対する変化応答

概要

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The response times of current, voltage and temperature were measured for a small unit-cell with electrode area of 10(cm)^2. When the current was made to change, the voltage responded quickly within about 10ms, but cell temperature responded slowly for about 1 minute. The response time of gas outlet temperature was longer than that of cell holder. For the cell with 8 segmented electrode to measure the current distribution along gas stream, the response times of voltage, current and temperature are the same as the one piece electrode cell mentioned above. In the case where the hydrogen gas flow rate was made to change keeping the constant current, the voltage responses was about 6 minutes for each segmented electrode, and at the end of response time the current density is high at inlet and low at outlet. The experiments results show that, the electrical response time of PEFC is faster than fluid dynamic and thermal response times.
一般社団法人日本機械学会の論文
2000-07-31