本文利用直接甲醇燃料电池瞬态二维两相多组分质量传输模型,研究了电池电流密度阶跃变化时电池电压以及电池膜电极内组分传输的动态响应过程.研究发现当电流密度突然降低时,电池电压出现过脉冲现象,这是由阴阳极过电势不同的动态响应趋势和响应速度造成的.电压的长时间响应主要是因为膜电极内甲醇缓慢的传输过程引起的.
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