【摘要】 为了探索PEM燃料电池堆的动态特性,对自制5kw PEM燃料电池堆进行了详尽的实验研究。实验结果表明,在所研究条件范围内,温度和压力越高电堆性能越好,而且电堆内阻不仅与工作温度有关,还显著地与操作压力有关。燃料电池堆对于大的负载突变反应能力强,负载变化时,在4s之内就能达到稳定状态,观察到动态极化曲线的不重合现象,它反映了电堆内部水的传质具有复杂机制。更多还原

【Abstract】 To explore the dynamic characteristics of PEM fuel cell stack, a self-fabricated 5 kW PEM fuel cell stack had been researched in detail.The experiment results showed that the inner resistance of a stack depended on not only the temperature but also the operating pressure of the stack. The PEMFC stack could work well under large load change, and it came to steady state within 4 seconds. A hysteresis was observed between the dynamic polarization curves.更多还原