Crosslinked anion exchange membranes prepared from poly(phenylene oxide) (PPO) for non-aqueous redox flow batteries

Composite anion-exchange membranes (AEMs) consisting of a porous substrate and a vinyl imidazolium poly(phenylene oxide) (VIMPPO)/acrylamide copolymer layer were fabricated in a straightforward process, for use in redox flow batteries. The porous substrate was coated with a mixture of VIMPPO and acrylamide monomers, then subsequently exposed to UV irradiation, in order to obtain a radically cured ion-exchange coating. Combining VIMPPO with low-value reagents allowed to significantly reduce the amount of synthesized ionomer used to fabricate the mem- brane down to 15%. Varying the VIMPPO content also allowed tuning the ionic transport properties of the resulting AEM. A series of membranes with different VIMPPO/acrylamides ratios were prepared to assess the optimal composition by studying the changes of membranes properties—water uptake, area resistivity, permeability, and chemical stability. Characterization of the membranes was followed by cycling experiments in a vanadium RFB (VRFB) cell. Among three composite membranes, the one with VIMPPO 15% w/w—reached the highest energy efficiency (75.1%) matching the performance of commercial ion-exchange membranes (IEMs) used in VRFBs (Nafion® N 115: 75.0% and Fumasep® FAP 450: 73.0%). These results showed that the proposed composite AEM, fabricated in an industrially oriented process, could be considered to be a lower-cost alternative to the benchmarked IEMs.

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Polyether Ether Ketone-Based Anion Exchange Membranes with Bis-imidazolium Cations for All-Vanadium Redox Flow Batteries

ACS Applied Energy Materials ◽

10.1021/acsaem.1c00887 ◽

2021 ◽

Author(s):

Song Yang ◽

Xufeng Chu ◽

Bing Xue ◽

Teng Lv ◽

Bencai Lin ◽

...

Keyword(s):

Anion Exchange ◽

Anion Exchange Membranes ◽

Imidazolium Cations ◽

Redox Flow Batteries ◽

Polyether Ether Ketone ◽

Flow Batteries ◽

Ether Ketone ◽

Vanadium Redox

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Evaluation of Diels–Alder poly(phenylene) anion exchange membranes in all-vanadium redox flow batteries

Electrochemistry Communications ◽

10.1016/j.elecom.2014.03.010 ◽

2014 ◽

Vol 43 ◽

pp. 63-66 ◽

Cited By ~ 38

Author(s):

Che-Nan Sun ◽

Zhijiang Tang ◽

Cami Belcher ◽

Thomas A. Zawodzinski ◽

Cy Fujimoto

Keyword(s):

Anion Exchange ◽

Diels Alder ◽

Anion Exchange Membranes ◽

Redox Flow Batteries ◽

Flow Batteries ◽

Vanadium Redox

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Synthesis and investigation of imidazolium functionalized poly(arylene ether sulfone)s as anion exchange membranes for all-vanadium redox flow batteries

RSC Advances ◽

10.1039/c5ra25372a ◽

2016 ◽

Vol 6 (8) ◽

pp. 6029-6037 ◽

Cited By ~ 17

Author(s):

Di Lu ◽

Lele Wen ◽

Feng Nie ◽

Lixin Xue

Keyword(s):

Anion Exchange ◽

Vanadium Redox Flow Battery ◽

Anion Exchange Membranes ◽

Redox Flow Battery ◽

Flow Battery ◽

Redox Flow Batteries ◽

Arylene Ether ◽

Flow Batteries ◽

Vanadium Redox

A serials of imidazolium functionalized poly(arylene ether sulfone) as anion exchange membranes (AEMs) for all-vanadium redox flow battery (VRB) application are synthesized successfully in this study.

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