Recent advances in alkali-doped polybenzimidazole membranes for fuel cell applications

Q. X. Wu, Z. F. Pan, Liang An

Research output: Journal article publicationReview articleAcademic researchpeer-review

50 Citations (Scopus)


Polybenzimidazole (PBI), with a well-known excellent thermal stability, has been recognized as an alternative for anion exchange membrane fuel cells (AEMFC), primarily because it can serve as an ionic conductor after doping with inorganic hydroxides (typically KOH/NaOH) and thus allows fuel cells to be operated at high temperatures (currently as high as 120 °C). In addition, alkali-doped PBI membranes also offer many other favored physiochemical properties, such as high ionic conductivity. The objective of this article is to provide a review of recent research on the alkali-doped PBI membranes and their applications in fuel cells, including mechanisms of ion conduction through the alkali-doped PBI membranes, stability of the PBI membranes doped with alkali, strategies aiming at improving the ionic conductivity of the PBI membranes doped with alkali, as well as the performance of alkali-doped PBI membrane based fuel cells. Additionally, future perspectives relating to the development of alkali-doped PBI membranes and their applications in fuel cells are also highlighted.

Original languageEnglish
Pages (from-to)168-183
Number of pages16
JournalRenewable and Sustainable Energy Reviews
Publication statusPublished - 1 Jun 2018


  • Alkali-doped PBI membranes
  • Anion exchange membrane fuel cells
  • Fuel cells
  • Physiochemical properties
  • Polybenzimidazole
  • Single-cell performance

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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