Preparation and characterization of modified Sulfonated Poly(ether sulfone) and its application to hydrogen production by water electrolysis at low applied voltage.

• Main Authors: Lin, Wen-Cheng, 林文政
• Other Authors: Liao, Wei-Tung
• Format: Others
• Language: zh-TW
• Published: 104
• Online Access: http://ndltd.ncl.edu.tw/handle/j2ay7q

碩士 === 南臺科技大學 === 化學工程與材枓工程系 === 103 === The aim of this study was mainly about designing a novel approach for water elelctrolysis at low voltage, the applied voltage could be lower to 1.2V or below. The application of Sulfonated Poly(ether sulfone) membrane to water elelctrolysis will improve the decrease of elelctrolysis performance by time. Under the different feeding molar ratio of conditions of BPA, 4-FPS, HPS,and PEG, 160℃ reaction temperature and 24 hours reaction time, 60% of theoretical degree of sulfonation copolymer were obtained. The testing showed that the water uptake of membranes were from 32.7% to 42.12% by increasing the content of PEG. And ion exchange capacity (IEC) of membranes were from 1.2091 (mmol/g) to 1.2669 (mmol/g). This study also varied different operating parameters in the experiments, such as pressure, concentration of electrolytes, applied voltage, and preparation of MEA. The stability of water elelctrolysis by using SPES membranes were batter than Nafion 212 membrane.