Standard Article

High-temperature polybenzimidazol-based membranes

Advances in Electrocatalysis, Materials, Diagnostics and Durability

Conductive membranes for low-temperature fuel cells

Novel materials

  1. D. C. Seel1,
  2. B. C. Benicewicz1,
  3. L. Xiao2,
  4. T. J. Schmidt3

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f500019

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Seel, D. C., Benicewicz, B. C., Xiao, L. and Schmidt, T. J. 2010. High-temperature polybenzimidazol-based membranes. Handbook of Fuel Cells. .

Author Information

  1. 1

    University of South Carolina, Columbia, SC, USA

  2. 2

    BASF Fuel Cell Inc., Somerset, NJ, USA

  3. 3

    BASF Fuel Cell GmbH, Frankfurt am Main, Germany

Publication History

  1. Published Online: 15 DEC 2010


High-temperature polybenzimidazole-based membranes Polybenzimidazole (PBI) is an excellent material for phosphoric acid-doped proton exchange membranes. PBI-based membranes can operate reliably at temperatures above 120 °C, which provides high CO tolerance, fast electrode kinetics, and simplified water and thermal management. PBI membranes prepared by the polyphosphoric acid (PPA) process exhibit improved mechanical properties, proton conductivities, and fuel cell operational characteristics at higher phosphoric acid loading levels compared to the conventionally prepared PBI-based membranes for high-temperature fuel cell applications.


  • high-temperature polymer electrolyte membrane (PEM);
  • phosphoric acid (PA);
  • polybenzimidazole (PBI);
  • PPA process