The hydrated condition inside the catalyst layer of the Cathode of a PEMFC

• Main Authors: Hao-Quan Xie, 謝濠全
• Other Authors: Ming-San Lee
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/838ufz

碩士 === 國立中山大學 === 機械與機電工程學系研究所 === 101 === The hydrated condition of the electrode are crucial to the electrode performance. We analyze the pattern for development of generation water by the difference of transient responses between traditional electrodes and microstructure electrodes. A water surface formed in the catalyst layer of cathode, and the surface will vary according to the difference between the quantity of general water and removed water. The certain distance of the cathode layer is the major reaction area, and the distance is also affected by the quantity of Nafion. Experiments have corroborated that the quantity is decided by the volume of cathode layer, instead of the weight of Pt. The more direct method for measuring the position of water surface is already in development.