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对自制可视化直接甲醇燃料电池单体阴极流场内液滴生长特性、氧气流量和氧气进气温度对流场水淹及电池性能的影响进行了实验研究.结果表明:平行流场中首个液滴大多在流场右上区域冒出;流场中新液滴的出现具有瞬间涌出特性,并优先在流场板和扩散层交界的夹角处及扩散层表面碳纤维束交叉处产生;液滴生长过程具有非连续性,与流道边壁相接触的液滴和液柱的生长速度均大于未接触流道边壁的液滴生长速度,而且液柱有逆气流方向反向生长现象.氧气流量及氧气进气温度的升高,均导致阴极流道内液态水和流场中大液滴数量及形成液柱的长度减少,促使电池性能提高.

参考文献

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