Numerical study of effect of membrane properties on long-cycle performance of vanadium redox flow batteries

2016 ◽  
Vol 4 (4) ◽  
pp. 285-297
Author(s):  
Zi Wei ◽  
N.A. Siddique ◽  
Dong Liu ◽  
Shambhavi Sakri ◽  
Fuqiang Liu
Keyword(s):  
Numerical Study ◽  
Membrane Properties ◽  
Cycle Performance ◽  
Long Cycle ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

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.

A numerical study of electrode thickness and porosity effects in all vanadium redox flow batteries

2020 ◽  
Vol 28 ◽  
pp. 101208 ◽  
Author(s):  
Ehtesham Ali ◽  
Hwabhin Kwon ◽  
Jaehun Choi ◽  
Jonghyeon Lee ◽  
Jungmyung Kim ◽  
...  
Keyword(s):  
Numerical Study ◽  
Electrode Thickness ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Numerical study on serpentine design flow channel configurations for vanadium redox flow batteries

2020 ◽  
Vol 32 ◽  
pp. 101802
Author(s):  
Ehtesham Ali ◽  
Hwabhin Kwon ◽  
Jungmyung Kim ◽  
Heesung Park
Keyword(s):  
Numerical Study ◽  
Flow Channel ◽  
Design Flow ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Thermo–chemical treatments based on NH3/O2 for improved graphite-based fiber electrodes in vanadium redox flow batteries

Carbon ◽  
2013 ◽  
Vol 60 ◽  
pp. 280-288 ◽  
Author(s):  
Cristina Flox ◽  
Javier Rubio-García ◽  
Marcel Skoumal ◽  
Teresa Andreu ◽  
Juan Ramón Morante
Keyword(s):  
Chemical Treatments ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Locating Shunt Currents in a Multistack System of All-Vanadium Redox Flow Batteries

2021 ◽  
Author(s):  
Han-Wen Chou ◽  
Feng-Zhi Chang ◽  
Hwa-Jou Wei ◽  
Bhupendra Singh ◽  
Amornchai Arpornwichanop ◽  
...  
Keyword(s):  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox
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