论文标题
具有振荡气流速度的PEM燃料电池的性能：基于电池阻抗的建模研究
Performance of a PEM fuel cell with oscillating air flow velocity: A modeling study based on cell impedance
论文作者
论文摘要
考虑到施加的谐波燃料电池阻抗模型，考虑到施加的谐波扰动对阴极通道中的空气流速。由于通道中的氧气传输而导致的电阻率$ r_H $，其幅度与AC振幅成正比的流速调制。当速度和潜在振荡的相对振幅相等时，会发生$ r_h $的完全补偿。这种效果解释了Kim等人的实验发现。 （doi：10.1016/j.jpowsour.2008.06.069）和Hwang等人（doi：10.1016/j.ijhydene.2010.01.064），他们在移动空气流量速度下显示出PEM燃料电池性能的显着改善。
A model of PEM fuel cell impedance is developed taking into account imposed harmonic perturbation of the air flow velocity in the cathode channel. The flow velocity modulation with the amplitude proportional to AC amplitude of the cell potential lowers the resistivity $R_h$ due to oxygen transport in channel. When relative amplitudes of velocity and potential oscillations are equal, a complete compensation of $R_h$ occurs. This effect explains experimental findings of Kim et al. (doi:10.1016/j.jpowsour.2008.06.069) and Hwang et al.(doi:10.1016/j.ijhydene.2010.01.064), who demonstrated significant improvement of PEM fuel cell performance under oscillating air flow velocity.
