The Effect of Catalyst Layer Composition on the Performance of PEM Water Electrolyzer

• Main Authors: Chi-Yuan Chang, 張繼元
• Other Authors: Hsiu-Li Lin
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/eqnq68

碩士 === 元智大學 === 化學工程與材料科學學系 === 106 === The Effect of Catalyst Layer Composition on the Performance of PEM Water Electrolyzer Student: Chi-Yuan Chang Advisor: Dr. Hsiu-Li Lin Department of Chemical Engineering & Materials Science Yuan Ze University Abstract The effect of the ratio of IrO2 to Nafion in catalyst layer on the performance of polymer electrolyte membrane water electrolysis (PEMWE) was investigated in this study. Anodes were prepared by mixing IrO2 powder, Nafion with the weight ratio of 1: 1, 1 : 0.5, 1 : 0.1 and 1 : 0.05, respectively. Cathode was prepared by mixing Pt/C powder, Nafion with the weight ratio of 1: 0.5. Metal loadings were 0.26 mg cm-2 of Pt at cathode and 1.5 mg cm-2 of IrO2 at anode, respectively. Membrane was Nafion®212. Activation area of MEA was 6.25 cm2. Membrane electrode assemblies were prepared using CCM method. The i-V curves were obtained at 30, 40, 60 and 80℃. It was found that the MEA prepared in the weight ratio of 1 : 0.5 had the best performance. 1.0 A cm-2 of current density was obtained at 80℃, 1.8 V. Keywords: PEMWE, Nafion 212, Pt/C, IrO2