SPEEK/PVDF/PES Composite as Alternative Proton Exchange Membrane for Vanadium Redox Flow Batteries

In this study, blended anion exchange membranes were prepared using polyphenylene oxide containing quaternary ammonium groups and polyvinylidene fluoride. A polyvinylidene fluoride with high hydrophobicity was blended in to lower the vanadium ion permeability, which increased when the hydrophilicity increased. At the same time, the dimensional stability also improved due to the excellent physical properties of polyvinylidene fluoride. Subsequently, permeation of the vanadium ions was prevented due to the positive charge of the anion exchange membrane, and thus the permeability was relatively lower than that of a commercial proton exchange membrane. Due to the above properties, the self-discharge of the blended anion exchange membrane (30.1 h for QA–PPO/PVDF(2/8)) was also lower than that of the commercial proton exchange membrane (27.9 h for Nafion), and it was confirmed that it was an applicable candidate for vanadium redox flow batteries.

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An ultra-high ion selective hybrid proton exchange membrane incorporated with zwitterion-decorated graphene oxide for vanadium redox flow batteries

Journal of Materials Chemistry A ◽

10.1039/c9ta01891c ◽

2019 ◽

Vol 7 (20) ◽

pp. 12669-12680 ◽

Cited By ~ 15

Author(s):

Yuxia Zhang ◽

Haixia Wang ◽

Bo Liu ◽

Jingli Shi ◽

Jun Zhang ◽

...

Keyword(s):

Proton Exchange Membrane ◽

Ion Selectivity ◽

Proton Exchange ◽

Hybrid Membranes ◽

Ion Permeability ◽

Redox Flow Batteries ◽

Good Trade ◽

Exchange Membrane ◽

Vanadium Redox ◽

Vanadium Ion

A good trade-off effect between proton conductivity and vanadium ion permeability contributing ultra-high ion selectivity is demonstrated for SPEEK/ZC-GO hybrid membranes influenced by zwitterionic ZC-GO nanofillers.

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Sulfonated graphene oxide-decorated block copolymer as a proton-exchange membrane: improving the ion selectivity for all-vanadium redox flow batteries

Journal of Materials Chemistry A ◽

10.1039/c8ta06717a ◽

2018 ◽

Vol 6 (36) ◽

pp. 17740-17750 ◽

Cited By ~ 20

Author(s):

Md. Abdul Aziz ◽

Sangaraju Shanmugam

Keyword(s):

Graphene Oxide ◽

Block Copolymer ◽

Proton Exchange Membrane ◽

Ion Selectivity ◽

Proton Exchange ◽

Discharge Time ◽

Redox Flow Batteries ◽

Sulfonated Graphene ◽

Exchange Membrane ◽

Vanadium Redox

A SPEKS/sGO composite membrane with superior ion selectivity and chemical stability was synthesized. The composite and pristine SPEKS membranes exhibited a 10.4- and 6.5-times greater self-discharge time compared with the commercial Nafion-212 membrane.

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A highly selective proton exchange membrane with highly ordered, vertically aligned, and subnanosized 1D channels for redox flow batteries

Journal of Power Sources ◽

10.1016/j.jpowsour.2018.10.043 ◽

2018 ◽

Vol 406 ◽

pp. 35-41 ◽

Cited By ~ 11

Author(s):

X.H. Yan ◽

X.L. Zhou ◽

T.S. Zhao ◽

H.R. Jiang ◽

L. Zeng

Keyword(s):

Proton Exchange Membrane ◽

Proton Exchange ◽

Redox Flow Batteries ◽

Flow Batteries ◽

Vertically Aligned ◽

Exchange Membrane

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Vanadium Redox Flow Batteries: A Review Oriented to Fluid-Dynamic Optimization

Energies ◽

10.3390/en14010176 ◽

2020 ◽

Vol 14 (1) ◽

pp. 176

Author(s):

Iñigo Aramendia ◽

Unai Fernandez-Gamiz ◽

Adrian Martinez-San-Vicente ◽

Ekaitz Zulueta ◽

Jose Manuel Lopez-Guede

Keyword(s):

Large Scale ◽

Numerical Models ◽

Fluid Dynamic ◽

Renewable Energy Sources ◽

Vanadium Redox Flow Battery ◽

Redox Flow Batteries ◽

Design Flexibility ◽

Flow Batteries ◽

Exchange Membrane ◽

Vanadium Redox

Large-scale energy storage systems (ESS) are nowadays growing in popularity due to the increase in the energy production by renewable energy sources, which in general have a random intermittent nature. Currently, several redox flow batteries have been presented as an alternative of the classical ESS; the scalability, design flexibility and long life cycle of the vanadium redox flow battery (VRFB) have made it to stand out. In a VRFB cell, which consists of two electrodes and an ion exchange membrane, the electrolyte flows through the electrodes where the electrochemical reactions take place. Computational Fluid Dynamics (CFD) simulations are a very powerful tool to develop feasible numerical models to enhance the performance and lifetime of VRFBs. This review aims to present and discuss the numerical models developed in this field and, particularly, to analyze different types of flow fields and patterns that can be found in the literature. The numerical studies presented in this review are a helpful tool to evaluate several key parameters important to optimize the energy systems based on redox flow technologies.

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