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建立了一个新的二维、两相流模型来研究质子交换膜(PEM)燃料电池中的两相传质及其对质子膜阻抗和阴极性能的影响.模型不仅将催化剂层(CL)包含在电极中,还考虑了电池中相变及其对传质的影响.模型可同时使用在电池的阴极和阳极.主要模拟了电池阴极中两相传质、质子膜阻抗、阴极有效孔隙率和电流密度.模拟结果显示,提高加湿温度可以降低质子膜的阻抗,但过高的加湿温度会降低阴极气体扩散层(GDL)的有效孔隙率,降低阴极的性能.

参考文献

[1] Z.H.Wang;C.Y.Wang;K.S.Chen .Two-phase flow an transport in the air cathode of proton exchange membrane fuel cells[J].Journal of Power Sources,2001(1):40-50.
[2] Lixin You;Hongtan Liu .A two-phase flow and transport model for the cathode of PEM fuel cells[J].International Journal of Heat and Mass Transfer,2002(11):2277-2287.
[3] Wensheng He;Jung S.Yi;Trung Van Nguyen .Two-Phase Flow Model of the Cathode of PEM Fuel Cells Using Interdigitated Flow Fields[J].AIChE Journal,2000(10):2053-2064.
[4] Natarajan D;Nguyen T V .Three-Dimensional Effects of Liquid Water Flooding in the Cathode of a PEM Fuel Cell[J].Journal of Power Sources,2003,115(01):66-80.
[5] Hu M R;Gu A Z;Wang M H et al.Three Dimensional Two Phase Flow Mathematical Model for PEM Fuel Cell[J].Energy Conversion and Management,2004,45(11-12):1861-1882.
[6] Sun H;Liu H T;Guo L J .PEM Fuel Ccell Performance and its Two-Phase Mass Transport[J].Journal of Power Sources,2005,143(1-2):125-135.
[7] 孙红,郭烈锦,刘洪潭,张广升.操作参数对PEM燃料电池中水迁移的影响[J].工程热物理学报,2005(02):257-260.
[8] 孙红;郭烈锦;刘洪潭 .PEM燃料电池阴极中液态水及其影响因素[J].化工学报,2004,55(zk):215-219.
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