Preparation and properties of polyvinylpyrrolidone &amp; polyvinyl chloride composite proton exchange membrane for vanadium redox flow batteries

Dai Yu; Zeng Zehua; Zhang Dongbin; Teng Aijun; Liu Tianhao; Yin Xianglu; Yuan Xinran

doi:10.7513/j.issn.1004-7638.2024.04.001

Volume 45 Issue 4

Aug. 2024

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Dai Yu, Zeng Zehua, Zhang Dongbin, Teng Aijun, Liu Tianhao, Yin Xianglu, Yuan Xinran. Preparation and properties of polyvinylpyrrolidone & polyvinyl chloride composite proton exchange membrane for vanadium redox flow batteries[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 1-7. doi: 10.7513/j.issn.1004-7638.2024.04.001

Citation:

Dai Yu, Zeng Zehua, Zhang Dongbin, Teng Aijun, Liu Tianhao, Yin Xianglu, Yuan Xinran. Preparation and properties of polyvinylpyrrolidone & polyvinyl chloride composite proton exchange membrane for vanadium redox flow batteries[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 1-7. doi: 10.7513/j.issn.1004-7638.2024.04.001

Citation:

Dai Yu, Zeng Zehua, Zhang Dongbin, Teng Aijun, Liu Tianhao, Yin Xianglu, Yuan Xinran. Preparation and properties of polyvinylpyrrolidone & polyvinyl chloride composite proton exchange membrane for vanadium redox flow batteries[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 1-7. doi: 10.7513/j.issn.1004-7638.2024.04.001

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Preparation and properties of polyvinylpyrrolidone & polyvinyl chloride composite proton exchange membrane for vanadium redox flow batteries

doi: 10.7513/j.issn.1004-7638.2024.04.001

Ansteel Group Beijing Research Institute Co., Ltd., Beijing 102211, China

Received Date: 2024-01-18
Publish Date: 2024-08-30

Abstract

Abstract

Proton exchange membrane (PEM), as a key component of vanadium redox flow battery (VRFB), plays an important role in controlling the performance and cost of VRFB. A series of PVP&PVC composite PEMs were prepared, wherein PVP carried out ion conduction in the membrane due to the protonation of amine groups, and PVC acted as skeleton to support the membrane. By adjusting the ratio of PVP and PVC in the composite membrane, the PEM which is suitable for all-vanadium flow battery was obtained. It is found out that with the increase of PVC content in the composite PEM, the mechanical property of the membrane is enhanced, and the transmittance of vanadium ion is decreased. The conductivity and swelling of the membrane increased with the increase of PVP content. The results show that when the mass ratio of PVP and PVC in the composite membrane is 1:1, the proton selectivity is 3.8×10³ S·min·cm^–3 which is the highest among the investigated composite membranes, so the comprehensive performance of PVP&PVC-1:1 composite membrane is the best. When the current density is 50 mA·cm^–2, the single battery assembled with PVP&PVC-1:1 membrane is possessed a good charge and discharge capacity.
- all-vanadium flow battery,
- proton exchange membrane,
- polyvinylpyrrolidone,
- polyvinyl chloride, proton selectivity

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