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Title: Acid-doped polybenzimidazoles: A new polymer electrolyte

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/1.2044337· OSTI ID:99597
; ; ; ;  [1]
  1. Case Western Reserve Univ., Cleveland, OH (United States)

Polybenzimidazole films doped with phosphoric acid are being investigated as potential polymer electrolytes for use in hydrogen/air and direct methanol fuel cells. In this paper, the authors present experimental findings on the proton conductivity, water content, and methanol vapor permeability of this material, as well as preliminary fuel cell results. The low methanol vapor permeability of these electrolytes significantly reduces the adverse effects of methanol crossover typically observed in direct methanol polymer electrolyte membrane fuel cells.

Sponsoring Organization:
USDOE
OSTI ID:
99597
Journal Information:
Journal of the Electrochemical Society, Vol. 142, Issue 7; Other Information: PBD: Jul 1995
Country of Publication:
United States
Language:
English