Ultrathin anion exchange membranes with an improved OH− transfer rate for high-performance AEMFCs

Wanjie Song; Xian Liang; Huaqing Zhang; Xiang Liu; Xin Zhang; Liang Wu; Xiaolin Ge; Tongwen Xu

doi:10.1039/D2TA05681J

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Ultrathin anion exchange membranes with an improved OH⁻ transfer rate for high-performance AEMFCs†

Wanjie Song,‡^a Xian Liang,‡^ab Huaqing Zhang,^a Xiang Liu,^a Xin Zhang,^a Liang Wu,

^a Xiaolin Ge*^a and Tongwen Xu

*^a

Author affiliations

* Corresponding authors

^a CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
E-mail: gexl@ustc.edu.cn, twxu@ustc.edu.cn

^b School of Chemistry and Material Engineering, Huainan Normal University, Huainan, Anhui 232001, P. R. China

Abstract

Anion exchange membranes (AEMs) as the key component of alkaline anion exchange membrane fuel cells (AEMFCs) are closely related to their performance. Reducing membrane thickness as much as possible on the premise of ensuring electrical conductivity and mechanical strength is of great significance in improving the performance of AEMFCs. As the membrane thickness decreases, the mass transfer resistance can be significantly reduced, while the energy conversion efficiency can be improved. Here we fabricated a freestanding AEM with excellent mechanical strength and ionic conductivity with a thickness of 10 μm, which can fulfill the fuel cell requirements. The fuel cell assembled from the fabricated freestanding ultrathin AEM presents an excellent power output of 1.8 W cm⁻² and a long-term stable operation of ∼140 h.

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Article information

DOI: https://doi.org/10.1039/D2TA05681J
Article type: Paper
Submitted: 18 Jul 2022
Accepted: 08 Sep 2022
First published: 10 Sep 2022

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J. Mater. Chem. A, 2022,10, 21503-21511

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Ultrathin anion exchange membranes with an improved OH⁻ transfer rate for high-performance AEMFCs

W. Song, X. Liang, H. Zhang, X. Liu, X. Zhang, L. Wu, X. Ge and T. Xu, J. Mater. Chem. A, 2022, 10, 21503 DOI: 10.1039/D2TA05681J

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Journal of Materials Chemistry A