Synthesis and characterization of poly(benzimidazolium) membranes for anion exchange membrane fuel cells
- Synthesis and characterization of poly(benzimidazolium) membranes for anion exchange membrane fuel cells
- 이혜진; 최지은; 한준영; 김형준; 성영은; 김화용; 헨켄스마이어디억; 조은애; 장종현; 유성종
- polybenzimidazole; anion exchange; fuel cell; Anion exchange membrane; Anion exchange membrane fuel cell; Poly(dimethyl benzimidazolium)
- Issue Date
- Polymer bulletin
- VOL 70, NO 9, 2619-2631
- Poly(dimethyl benzimidazolium) iodides were synthesized from polybenzimidazole derivatives by permethylation. They were easily changed to OH−, CO3 2− and HCO3 − ion conducting electrolytes by immersing in 1 M of KOH, K2CO3 and KHCO3. Properties of polymers were changed by the ion exchange process. The anion conducting membranes showed tough and flexible properties. The water uptake, ion exchange capacity and conductivity varied depending on the counter anions. One of the poly(dimethyl benzimidazolium) carbonate membranes, Me-DAB-OBBA-carbonate showed the highest water uptake (59 %) as well as ion conductivity (33.74 mS/cm at 80 °C), and could be a good candidate for an anion exchange membrane for anion exchange membrane fuel cells.
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