被动式燃料电池动态性能传质影响实验研究  

EXPERIMENTAL INVESTIGATION OF INFLUENCE OF MASS TRANSFER ON DYNAMIC PERFORMANCE OF PASSIVE FUEL CELLS

作　　者：郭航[1] 吴晓晖[1] 叶芳[1] 裴媛[1] 马重芳[1] 

机构地区：[1]北京工业大学环境与能源工程学院传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室,北京100124

出　　处：《工程热物理学报》2010年第7期1178-1180,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50976006)

摘　　要：自行研制了可在任意角度下工作的小型被动式直接甲醇燃料电池。对被动式燃料电池在不同电流负载变化情况下的输出电压动态响应开展了实验研究工作。实验结果表明,在加载电流的时候,阳极甲醇溶液浓度为9 mol/L时燃料电池的输出电压明显高于溶液浓度为5 mol/L时的,而且变化比较平稳。在卸载电流以及低电流密度时,阳极燃料浓度为5mol/L的电压高于浓度为9 mol/L时的。放电电流密度越高,低浓度时的放电电压越不稳定。从被动式燃料电池内部传质过程与电化学反应耦合的角度对实验结果开展了分析。A small passive direct methanol fuel cell, which can operate in any orientation, has been developed. Dynamic response of cell voltage to current load variation of passive fuel cells has been studied experimentally. The experimental results show that when current is loaded, output voltage of fuel cells with methanol concentration of 9 mol/L is higher and steadier than that of fuel cells with methanol molarity of 5 mol/L. When the current is low or unloaded, the voltage of fuel cell with anode fuel concentration of 5 mol/L is higher than that with 9 mol/L molarity. When the solution concentration is low, the higher the discharge current density is, the unsteadier the output voltage is. The analysis and discussions of mass transfer coupling with electrochemical reactions inside passive fuel cell have been conducted to explain the experimental phenomena.

关 键 词：直接甲醇燃料电池 被动式供料 动态响应 传质 自呼吸 

分 类 号：TM911.4[电气工程—电力电子与电力传动]