The effect of gas diffusion layer on performance of high temperature proton exchange membrane fuel cells

• Main Authors: Yen-Liang Su, 蘇晏莨
• Other Authors: Hsiu-Li Lin
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/10457690649367178450

碩士 === 元智大學 === 化學工程與材料科學學系 === 103 === (Gas Diffusion Layer, GDL) is the essential key point of influence on the fuel cell and generate electricity stability of the entire system. GDL is an important catalyst layer supported, to provide the material required for the reaction, and the H2 and O2 diffusion. Due to the H2 and O2 generated after reaction with water, GDL can also function as water vapor and electron tunnel. In this study, used different GDL to research and analysis. For the first part, to observed each surface and thickness by SEM, to detect each contact angle of the surface, porosity analysis, to measure acid-containing rate. For the second part, to build up the electrode by ultrasound spray system, then to measure acid-containing, to analysis its cyclic voltammetry, to observe its surface by FE-SEM. For the third part, to assemble the electrode and membrane to MEA, Then analysis cell influence of the single fuel cell testing system. single fuel cell testing at 160℃, the result the carbon substrate have a small hole in microporous layer, so that the performance of fuel cell have been improved; carbon cloth of GDL have good performance on fuel cell in the air environment.