Chem. J. Chinese Universities

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Research Progress and Improvement Strategies of Phosphoric Acid-Doped High-Temperature Proton Exchange Membranes

LIU Binghui1,2, ZHAO Chengji1#br#   

  1. 1. College of Chemistry, Jilin University 2. College of Chemistry and Life Sciences, Changchun University of Technology

  • Received:2025-09-15 Revised:2025-11-11 Online First:2025-11-21 Published:2025-11-21
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.22579067)

Abstract: Proton exchange membrane fuel cell(PEMFC) has outstanding advantages such as high energy conversion efficiency, fast start-up speed, easy operation and maintenance. In the temperature range of 120 to 250 ℃, the operation of high-temperature proton exchange membrane fuel cells(HT-PEMFC) does not rely on the presence of water for proton conduction. This can effectively simplify the water management system, enhance the kinetics of electrode reactions, and strengthen the anti-poisoning ability of platinum-based electrocatalysts. At present, phosphoric acid(PA) doped polybenzimidazole(PBI) membrane is the preferred membrane material in HT-PEMFC, but it is faced with major problems such as poor antioxidant stability and PA loss. In this review, the transport mechanism of PA-doped high-temperature proton exchange membranes(HT-PEM) was first clarified, and such materials were systematically classified based on the research progress in the past 10 years. Finally, the key technical challenges and coping strategies of HT-PEM are analyzed, and the future development trend is prospected.

Key words: Phosphoric acid, Proton exchange membrane, Fuel cell, Antioxidant stability, Phosphoric acid loss

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