Issue 38, 2016
From the journal:

Journal of Materials Chemistry A

Cationic metal–organic framework porous membranes with high hydroxide conductivity and alkaline resistance for fuel cells†

Bin Wu,‡a   Liang Ge,‡a   Dongbo Yu, ORCID logo a   Linxiao Hou,a   Qiuhua Li,a   Zhengjin Yanga  and  Tongwen Xu*a  

* Corresponding authors

a CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center 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: twxu@ustc.edu.cn

Abstract

Hydroxide conductivity and alkaline stability are challenging issues for anion exchange membrane fuel cells (AEMFCs). Here, a novel sandwiched anion exchange membrane (AEM) was prepared from porous bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) entrapped cationic metal–organic frameworks (MOFs) with a polyvinyl alcohol (PVA) coating on the two sides. The porous BPPO matrix prepared by a non-solvent induced phase separation (NIPS) method provides numerous interconnected nanopores and sponge-like walls and enhanced uptake of alkali. The entrapped cationic MOFs can work as OH− conductive channels while the PVA coating can block the crossover of fuels such as methanol. The final membranes can reach an OH− conductivity of 145 mS cm−1 at 80 °C and a methanol permeability of 3.68 × 10−7 cm2 s−1, the performance of which is much higher than that in the existing literature.

Graphical abstract: Cationic metal–organic framework porous membranes with high hydroxide conductivity and alkaline resistance for fuel cells

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Article information

DOI
https://doi.org/10.1039/C6TA06661E
Article type
Communication
Submitted
04 Aug 2016
Accepted
30 Aug 2016
First published
30 Aug 2016

J. Mater. Chem. A, 2016,4, 14545-14549

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Cationic metal–organic framework porous membranes with high hydroxide conductivity and alkaline resistance for fuel cells

B. Wu, L. Ge, D. Yu, L. Hou, Q. Li, Z. Yang and T. Xu, J. Mater. Chem. A, 2016, 4, 14545 DOI: 10.1039/C6TA06661E

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