Recent Development in Composite Membranes for Flow Batteries

ChemSusChem ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3805-3819 ◽  
Author(s):  
Jine Wu ◽  
Qing Dai ◽  
Huamin Zhang ◽  
Xianfeng Li
Keyword(s):  
Composite Membranes ◽  
Flow Batteries

scholarly journals PVDF/Graphene Composite Nanoporous Membranes for Vanadium Flow Batteries

Membranes ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 89 ◽  
Author(s):  
Yiming Lai ◽  
Lei Wan ◽  
Baoguo Wang
Keyword(s):  
Vinylidene Fluoride ◽  
Graphene Nanosheets ◽  
Composite Membranes ◽  
Polymer Chains ◽  
Size Exclusion ◽  
Nanoporous Membranes ◽  
Graphene Composite ◽  
Conductive Membranes ◽  
Flow Batteries ◽  
Oxygen Groups

The development of chemically stable and high conductive membranes is one of the most important issues to improve the performance of vanadium flow batteries (VFBs). Herein, poly(vinylidene fluoride) (PVDF)/graphene composite nanoporous membranes were easily fabricated by manipulating crystallization processes. The graphene was used to enhance membrane selectivity and conductivity. In the nanoscale channels of the membranes, the graphene nanosheets reduced the apertures among the crystal grains, thus restraining vanadium ions crossover due to the size exclusion effect. Moreover, the oxygen groups on the graphene improved the surface hydrophilicity and formed hydrogen bonds with the PVDF polymer chains, which facilitated the proton transport. The composite membranes, with a 0.15 wt % graphene loading, showed a selectivity of 38.2 and conductivity of 37.1 mS/cm. The single cell exhibited a coulomb efficiency of 94.7%, a voltage efficiency of 88.5%, and an energy efficiency of 83.8%, which was 13% higher than that of the pristine PVDF membranes. The composite membranes showed excellent stability during 100 charge-discharge cycles. All these results indicate that the PVDF/graphene composite membrane is a promising candidate for VFB applications.

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

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

scholarly journals Composite Anion-Exchange Membrane Fabricated by UV Cross-Linking Vinyl Imidazolium Poly(Phenylene Oxide) with Polyacrylamides and Their Testing for Use in Redox Flow Batteries

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 436
Author(s):  
Martyna Charyton ◽  
Cristina Iojoiu ◽  
Peter Fischer ◽  
Gerard Henrion ◽  
Mathieu Etienne ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Composite Membranes ◽  
Anion Exchange Membranes ◽  
Porous Substrate ◽  
Redox Flow Batteries ◽  
Phenylene Oxide ◽  
Flow Batteries ◽  
Acrylamide Monomers ◽  
The One

Composite anion-exchange membranes (AEMs) consisting of a porous substrate and a vinyl imidazolium poly(phenylene oxide) (VIMPPO)/acrylamide copolymer layer were fabricated in a straightforward process, for use in redox flow batteries. The porous substrate was coated with a mixture of VIMPPO and acrylamide monomers, then subsequently exposed to UV irradiation, in order to obtain a radically cured ion-exchange coating. Combining VIMPPO with low-value reagents allowed to significantly reduce the amount of synthesized ionomer used to fabricate the mem- brane down to 15%. Varying the VIMPPO content also allowed tuning the ionic transport properties of the resulting AEM. A series of membranes with different VIMPPO/acrylamides ratios were prepared to assess the optimal composition by studying the changes of membranes properties—water uptake, area resistivity, permeability, and chemical stability. Characterization of the membranes was followed by cycling experiments in a vanadium RFB (VRFB) cell. Among three composite membranes, the one with VIMPPO 15% w/w—reached the highest energy efficiency (75.1%) matching the performance of commercial ion-exchange membranes (IEMs) used in VRFBs (Nafion® N 115: 75.0% and Fumasep® FAP 450: 73.0%). These results showed that the proposed composite AEM, fabricated in an industrially oriented process, could be considered to be a lower-cost alternative to the benchmarked IEMs.

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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