scholarly journals Performances of Anion-Exchange Blend Membranes on Vanadium Redox Flow Batteries

Membranes ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 31 ◽  
Author(s):  
Hyeongrae Cho ◽  
Henning Krieg ◽  
Jochen Kerres
Keyword(s):  
Anion Exchange ◽  
Exchange Capacity ◽  
Superior Performance ◽  
Membrane Properties ◽  
Redox Flow Batteries ◽  
Blend Membranes ◽  
Flow Batteries ◽  
A Charge ◽  
Exchange Membrane ◽  
Vanadium Redox

Anion exchange blend membranes (AEBMs) were prepared for use in Vanadium Redox Flow Batteries (VRFBs). These AEBMs consisted of 3 polymer components. Firstly, PBI-OO (nonfluorinated PBI) or F6-PBI (partially fluorinated PBI) were used as a matrix polymer. The second polymer, a bromomethylated PPO, was quaternized with 1,2,4,5-tetramethylimidazole (TMIm) which provided the anion exchange sites. Thirdly, a partially fluorinated polyether or a non-fluorinated poly (ether sulfone) was used as an ionical cross-linker. While the AEBMs were prepared with different combinations of the blend polymers, the same weight ratios of the three components were used. The AEBMs showed similar membrane properties such as ion exchange capacity, dimensional stability and thermal stability. For the VRFB application, comparable or better energy efficiencies were obtained when using the AEBMs compared to the commercial membranes included in this study, that is, Nafion (cation exchange membrane) and FAP 450 (anion exchange membrane). One of the blend membranes showed no capacity decay during a charge-discharge cycles test for 550 cycles run at 40 mA/cm2 indicating superior performance compared to the commercial membranes tested.

scholarly journals Asymmetric cycling of vanadium redox flow batteries with a poly(arylene piperidinium)-based anion exchange membrane

2021 ◽  
Vol 483 ◽  
pp. 229202
Author(s):  
Amirreza Khataee ◽  
Dong Pan ◽  
Joel S. Olsson ◽  
Patric Jannasch ◽  
Rakel Wreland Lindström
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

scholarly journals 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries

2019 ◽  
Vol 102 ◽  
pp. 37-40 ◽  
Author(s):  
Brian Shanahan ◽  
Thomas Böhm ◽  
Benjamin Britton ◽  
Steven Holdcroft ◽  
Roland Zengerle ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

scholarly journals Blended Anion Exchange Membranes for Vanadium Redox Flow Batteries

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2827
Author(s):  
Tae Yang Son ◽  
Kwang Seop Im ◽  
Ha Neul Jung ◽  
Sang Yong Nam
Keyword(s):  
Anion Exchange ◽  
Polyvinylidene Fluoride ◽  
Proton Exchange Membrane ◽  
Anion Exchange Membrane ◽  
Proton Exchange ◽  
Anion Exchange Membranes ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

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.

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

Energies ◽  
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.

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

2014 ◽  
Vol 43 ◽  
pp. 63-66 ◽  
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

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

RSC Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 6029-6037 ◽  
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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