6533b824fe1ef96bd127ff51

RESEARCH PRODUCT

Anion exchange membrane based on alkali doped poly(2,5-benzimidazole) for fuel cell

Bolade O. AgboolaMkhulu MatheShichun MuHongze LuoGuntars Vaivars

subject

inorganic chemicalsBenzimidazoleMaterials scienceIon exchangeInorganic chemistryDopingtechnology industry and agriculturesocial sciencesGeneral ChemistryConductivityCondensed Matter PhysicsAlkali metalIonchemistry.chemical_compoundMembranechemistrylipids (amino acids peptides and proteins)General Materials ScienceThermal stabilityhuman activities

description

Abstract The properties of alkali doped poly(2,5-benzimidazole) membrane with different alkali doping levels for fuel cell application are reported in this work. The alkali doping level played an important role for the ion conductivity of the membrane. The ion conductivity significantly increased with alkali doping level. The ion conductivity also increased with the temperature. The ion conductivity of the alkali doped ABPBI membrane (alkali doping level = 0.37), reached to 2.3 × 10 − 2  S cm − 1 at room temperature and 7.3 × 10 − 2  S cm − 1 at 100 °C. The water uptake of the alkali doped ABPBI membrane was increased from 9.1% to 19.2% with increasing alkali doping level at room temperature. The alkali doped poly(2,5-benzimidazole) membrane also showed excellent ion conducting stability and thermal stability as compared with the known quaternized anion exchange membranes.

yearjournalcountryeditionlanguage
2012-02-01Solid State Ionics
https://doi.org/10.1016/j.ssi.2011.11.029