Synthesis and characterization of poly(benzimidazolium) membranes for anion exchange membrane fuel cells

Authors
Lee, Hye-JinChoi, JieunHan, Jun YoungKim, Hyoung-JuhnSung, Yung-EunKim, HwayongHenkensmeier, DirkCho, Eun AeJang, Jong HyunYoo, Sung Jong
Issue Date
2013-09
Publisher
Springer Verlag
Citation
Polymer Bulletin, v.70, no.9, pp.2619 - 2631
Abstract
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 A degrees C), and could be a good candidate for an anion exchange membrane for anion exchange membrane fuel cells.
Keywords
HYDROXIDE; Anion exchange membrane; Anion exchange membrane fuel cell; Polybenzimidazole; Poly(dimethyl benzimidazolium)
ISSN
0170-0839
URI
https://pubs.kist.re.kr/handle/201004/127722
DOI
10.1007/s00289-013-0978-0
Appears in Collections:
KIST Article > 2013
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