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首页> 外文期刊>International Journal of Electrochemical Science >Effect of Segmented Current Collection Contacts Attached to Gas Diffusion Layer in Micro PEM Fuel Cells with Ceramic Flow Field Plates
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Effect of Segmented Current Collection Contacts Attached to Gas Diffusion Layer in Micro PEM Fuel Cells with Ceramic Flow Field Plates

机译：分段电流收集触点与陶瓷流动场板的微PEM燃料电池中的气体扩散层附着的影响

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摘要

Proton exchange membrane fuel cells (PEMFCs) are very promising for power stationary applications.One of the key components of fuel cells is the flow field plate through which hydrogen fuel will reachthe anode and oxygen reach the cathode. Another function of the flow field plate is the electroncollection. Traditionally flow field plates are made of graphite which makes them good for currentcollection. But graphite is costly and the alternative steel is heavy. Thus with development of MEMStechnology it becomes important to have flow field plates made of silicon or ceramics. As silicon andceramics are not good electrical conductors, electrical contacts have to be attached to the GasDiffusion Layer (GDL) for taking the power to outside world. This is achieved by attaching contactpads to the GDL area which are not covered by flow plates. A reduction in the power output from thecell is observed with current collection from the GDL. Here we build a three dimensional model for afuel cell in which current collection is carried out by segmented contacts attached to the GDL and thereasons for drop in performance is studied. Also the current collection contact is segmented in order toincrease the power output from the cell.
机译：质子交换膜燃料电池（PEMFC）非常有希望用于电力静止应用。燃料电池的关键部件是流场板，氢燃料将到达阳极和氧气到达阴极。流场板的另一个功能是电子电镀。传统上流场板由石墨制成，使它们适用于电阻器。但石墨昂贵，替代钢材很重。因此，随着Memstechnology的发展，具有由硅或陶瓷制成的流场板变得重要。由于硅Andceramics不是良好的电导体，电触点必须连接到储气层（GDL）上，以便将电力带到外部世界。这是通过将接触器连接到未被流动板覆盖的GDL区域来实现的。从GDL的电流集合观察到Thecell的功率输出的减少。在这里，我们为AFUEL电池构建三维模型，其中通过附着于GDL的分段触点来进行电流收集，并且研究了用于性能下降的。此外，当前的收集触点被分割，以便促使来自电池的电源输出。

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