Porous-Nafion/PBI composite membranes and Nafion/PBI blend membranes for vanadium redox flow batteries

2018 ◽  
Vol 450 ◽  
pp. 301-311 ◽  
Author(s):  
Mina Jung ◽  
Wonmi Lee ◽  
N. Nambi Krishnan ◽  
Sangwon Kim ◽  
Gaurav Gupta ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Redox Flow Batteries ◽  
Blend Membranes ◽  
Flow Batteries ◽  
Vanadium Redox

Stability of acid-excess acid–base blend membranes in all-vanadium redox-flow batteries

2015 ◽  
Vol 476 ◽  
pp. 148-155 ◽  
Author(s):  
Andreas Chromik ◽  
Antonio R. dos Santos ◽  
Thomas Turek ◽  
Ulrich Kunz ◽  
Thomas Häring ◽  
...  
Keyword(s):  
Acid Base ◽  
Redox Flow Batteries ◽  
Blend Membranes ◽  
Flow Batteries ◽  
Vanadium Redox

scholarly journals Layered composite membranes based on porous PVDF coated with a thin, dense PBI layer for vanadium redox flow batteries

2019 ◽  
Vol 591 ◽  
pp. 117333 ◽  
Author(s):  
Wonmi Lee ◽  
Mina Jung ◽  
Dmytro Serhiichuk ◽  
Chanho Noh ◽  
Gaurav Gupta ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Layered Composite ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Directly fluorinated polyaromatic composite membranes for vanadium redox flow batteries

2012 ◽  
Vol 415-416 ◽  
pp. 139-144 ◽  
Author(s):  
Dongyang Chen ◽  
Michael A. Hickner ◽  
Shuanjin Wang ◽  
Jingjing Pan ◽  
Min Xiao ◽  
...  
Keyword(s):  
Composite Membranes ◽  
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.

Investigation of local environments in Nafion–SiO2 composite membranes used in vanadium redox flow batteries

2012 ◽  
Vol 42 ◽  
pp. 71-80 ◽  
Author(s):  
M. Vijayakumar ◽  
Birgit Schwenzer ◽  
Soowhan Kim ◽  
Zhenguo Yang ◽  
S. Thevuthasan ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Redox Flow Batteries ◽  
Local Environments ◽  
Flow Batteries ◽  
Vanadium Redox
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