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Title

Hybrid proton-conducting membranes for polymer electrolyte fuel cells Phosphomolybdic acid doped poly(2,5-benzimidazole)—(ABPBI-H3PMo12O40)

AuthorsGómez-Romero, P. CSIC ORCID ; Asensio, Juan Antonio; Borrós, Salvador
KeywordsPolybenzimidazole
PBI
ABPBI
Heteropolyacid
Polyoxometalate
Phosphomolybdic acid
Hybrid materials
Proton conductor
Fuel cell membrane
Proton exchange membranes
PEM fuel cells
Issue Date27-Apr-2005
PublisherElsevier
CitationElectrochimica Acta 50: 4715–4720 (2005)
AbstractThe synthesis and characterization of a novel hybrid organic–inorganic material formed by phosphomolybdic acid H3PMo12O40 (PMo12) and poly(2,5-benzimidazole) (ABPBI) is reported. This material, composed of two proton-conducting components, can be cast in the form of membranes from methanesulfonic acid (MSA) solutions. Upon impregnation with phosphoric acid, the hybrid membranes present higher conductivity than the best ABPBI polymer membranes impregnated in the same conditions. These electrolyte membranes are stable up to 200 ◦C, and have a proton conductivity of 3×10−2 S cm−1 at 185 ◦C without humidification. These properties make them very good candidates as membranes for polymer electrolyte membrane fuel cells (PEMFC) at temperatures of 100–200 ◦C.
Publisher version (URL)http://dx.doi.org/10.1016/j.electacta.2005.02.029
URIhttp://hdl.handle.net/10261/15004
DOI10.1016/j.electacta.2005.02.029
ISSN0013-4686
Appears in Collections:(ICMAB) Artículos

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