Synthesis and Characterization of Novel Anion Exchange Membrane Based on Imidazolium-Functionalized Block Copolymer for Solid Alkaline Fuel Cells

• Main Authors: Wei-Hau Wang, 王偉豪
• Other Authors: Ming-Chou Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/53427202848837515890

碩士 === 國立中央大學 === 化學研究所 === 100 === The hydroxide-conducting block copolymer membranes were synthesized by two steps. Firstly, atom transfer radical polymerization (ATRP) of styrene gave poly(styrene)-Br as a macroinitiator. Secondly, poly(styrene-b-[VBMI][BF4]) were synthesized by ATRP using the above macroinitiator with [VBMI][BF4], 1-(4-vinylbenzyl)-3-methyl- imidazolium tetrafluoroborate. Via controling the reaction time and temperature of the second ATRP, different ratio (hydrophobic block and hydrophilic block) of block copolymers were synthesized. At room temperature, the highest conductivity of the membranes can reach up to 0.074 S/cm (under DI H2O) and 0.107 S/cm (under 1M KOH solution). The results exhibit these block ionomeric membranes are potential new type anion exchange membranes in SAFCs (solid alkline fuel cells).