Development of the variable gas channel which can carry out dynamic control of the amount of water content inside a Polymer Electrolyte Fuel Cell

水管理在pefc中很重要，因为氢和氧之间的反应产生水，并且在阴极发生冷凝。我们开发了可以改变肋部位置的可变气体通道。在本研究中，通过数值和实验研究来考察具有可变气道的PEFC的水行为和电池性能。由于肋部改变了气流，可以抑制干燥，使发电时间长。实验结果表明，在MEA干燥条件下，可变气通道可以控制电池的水分行为，提高电池的性能。

Water management is important in the PEFCs because the reaction between hydrogen and oxygen produces water and condensation occurs in the cathode. We have developed the variable gas channel which can change the position of the rib. In this study, numerical and experimental studies were performed to examine the water behavior and the cell performance of the PEFC with the variable gas channel. Since the rib changes the gas flow, we can suppress the dry out and enables the long-time power generation. It is confirmed that the variable gas channel can control water behavior and improve the cell performance at the dry condition of MEA.