加湿对PEMFC性能的影响

The effect of humidification on the performance of PEMFC

研究了在重力作用下,反应气体的湿度对质子交换膜燃料电池(PEMFC)性能的影响。通过控制加湿温度,控制反应气体的相对湿度;通过改变阴极和阳极的相对位置,来改变PEMFC内部的水管理。阳极不加湿(阴极加湿)时,PEMFC的性能最差;阴极不加湿(阳极加湿)时,PEMFC的性能最好。阳极在上时,重力对阴极排水有积极的作用;阴极在上时,重力阻碍阴极排水。

The effect of reaction gas humidity on the performance of proton exchange membrane fuel cell （PEMFC） under gravity was studied. The relative humidity of reaction gas was controlled by humidification temperature. The internal water management of PEMFC was changed by the relative position of anode and cathode. When anode was not humidified （cathode was humidified）, the performance of PEMFC was the worst, When cathode was not humidified （anode was humidified）, the performance of PEMFC was the best, At anode-upward, gravity helped the cathode drainage. At cathode-upward, gravity blocked the cathode drainage.