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Título

Recent Developments on Proton Conducting Poly(2,5-benzimidazole) ABPBI Membranes for High Temperature Polymer Electrolyte Fuel Cells

AutorAsensio, Juan Antonio; Gómez-Romero, P.
Palabras claveABPBI
High Temperature PEM
Hybrids
Membrane
PBI
PEMFC
Fecha de publicación2-ene-2005
EditorJohn Wiley & Sons
CitaciónFuel Cells 5(3): 336-343 (2005)
ResumenCommercial polybenzimidazole (PBI) membranes impregnated with phosphoric acid have become a serious candidate as electrolytes for high temperature PEMFC. Much research effort has been devoted to the study of this proton conducting membrane.[1, 2] On the other hand, PBI is not the simplest nor the cheapest of this family and many other polybenzimidazoles would also be of great interest in this respect. Among them, poly(2,5-benzimidazole) (ABPBI) is one of the best choices [3]. ABPBI is easy to polymerize from a single monomer, even without previous purification, it absorbs more acid than PBI in the same bath concentration, and it has the same thermal stability and high proton conductivity at temperatures up to 200 °C. Here we review all the recent developments on the preparation of proton conducting ABPBI membranes, mainly by phosphoric acid impregnation, but also by sulfonation or doping with heteropolyacids to form hybrid organic-inorganic membranes.
DescripciónArticle is part of Topical Issue Polymer Membranes.
Versión del editorhttp://dx.doi.org/10.1002/fuce.200400081
URIhttp://hdl.handle.net/10261/15591
DOI10.1002/fuce.200400081
ISSN1615-6854 (Online)
1615-6846 (Print)
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