动态特性是理解质子交换膜燃料电池性能的重要参数之一.运用燃料电池测试系统、恒电流/恒电压多通道测试仪和燃料电池电流密度分布测试装置,试验测量了质子交换膜燃料电池在不同加湿温度、电池温度和压力下的电流分布动态响应和动态特性.研究发现:不同区域的局部电流达到新的平衡所需的时间不同;加湿温度变化时,不同区域的局部电流的变化趋势各不相同;电池温度从333 K升高到363 K时,在气体通道方向上,局部电流由降低的变化趋势转变为增大的变化趋势.研究结果对质子交换膜燃料电池性能的优化有重要的指导作用.
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