Amphoteric nanoporous polybenzimidazole membrane with extremely low crossover for a vanadium redox flow battery

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5198-5204 ◽  
Author(s):  
Sandip Maurya ◽  
Sung-Hee Shin ◽  
Ju-Young Lee ◽  
Yekyung Kim ◽  
Seung-Hyeon Moon

We report amphoteric polybenzimidazole (PBI) membranes with tailored nanoporous structures for vanadium redox flow batteries (VRFBs).

RSC Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 6029-6037 ◽  
Author(s):  
Di Lu ◽  
Lele Wen ◽  
Feng Nie ◽  
Lixin Xue

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.


RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 63023-63029 ◽  
Author(s):  
M. S. Lee ◽  
H. G. Kang ◽  
J. D. Jeon ◽  
Y. W. Choi ◽  
Y. G. Yoon

A novel amphoteric ion-exchange membrane (AIEM) was prepared through the pore-filling technique, for vanadium redox flow battery (VRBs) applications.


2018 ◽  
Vol 6 (11) ◽  
pp. 4695-4705 ◽  
Author(s):  
Jinyeon Hwang ◽  
Bo-mi Kim ◽  
Joonhee Moon ◽  
Asad Mehmood ◽  
Heung Yong Ha

A taurine biomolecule performs as an efficient organic additive for the positive electrolyte of a vanadium redox flow battery (VRFB).


Batteries ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 38 ◽  
Author(s):  
Gerber ◽  
Fischer ◽  
Pinkwart ◽  
Tübke

One of the most important parameters for the design of redox flow batteries is a uniform distribution of the electrolyte solution over the complete electrode area. The performance of redox flow batteries is usually investigated by general measurements of the cell in systematic experimental studies such as galvanostatic charge-discharge cycling. Local inhomogeneity within the electrode cannot be locally-resolved. In this study a printed circuit board (PCB) with a segmented current collector was integrated into a 40 cm2 all-vanadium redox flow battery to analyze the locally-resolved current density distribution of the graphite felt electrode. Current density distribution during charging and discharging of the redox flow battery indicated different limiting influences. The local current density in redox flow batteries mainly depends on the transport of the electrolyte solution. Due to this correlation, the electrolyte flow in the porous electrode can be visualized. A PCB electrode can easily be integrated into the flow battery and can be scaled to nearly any size of the electrode area. The carbon coating of the PCB enables direct contact to the corrosive electrolyte, whereby the sensitivity of the measurement method is increased compared to state-of-the-art methods.


2015 ◽  
Vol 3 (33) ◽  
pp. 16913-16933 ◽  
Author(s):  
Ki Jae Kim ◽  
Min-Sik Park ◽  
Young-Jun Kim ◽  
Jung Ho Kim ◽  
Shi Xue Dou ◽  
...  

The vanadium redox flow battery, which was first suggested by Skyllas-Kazacos and co-workers in 1985, is an electrochemical storage system which allows energy to be stored in two solutions containing different redox couples.


Clean Energy ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 278-287 ◽  
Author(s):  
Jochen Friedl ◽  
Felix L Pfanschilling ◽  
Matthäa V Holland-Cunz ◽  
Robert Fleck ◽  
Barbara Schricker ◽  
...  

Abstract While redox flow batteries carry a large potential for electricity storage, specifically for regenerative energies, the current technology-prone system—the all-vanadium redox flow battery—exhibits two major disadvantages: low energy and low power densities. Polyoxometalates have the potential to mitigate both effects. In this publication, the operation of a polyoxometalate redox flow battery was demonstrated for the polyoxoanions [SiW12O40]4– (SiW12) in the anolyte and [PV14O42]9– (PV14) in the catholyte. Emphasis was laid on comparing to which extent an upscale from 25 to 1400 cm2 membrane area may impede efficiency and operational parameters. Results demonstrated that the operation of the large cell for close to 3 months did not diminish operation and the stability of polyoxometalates was unaltered.


Author(s):  
Anteneh Wodaje Bayeh ◽  
Daniel Manaye Kabtamu ◽  
Yo Chong Chang ◽  
Tadele Hunde Wondimu ◽  
H. C. Huang ◽  
...  

As one of the most promising electrochemical energy storage systems, the vanadium redox flow battery (VRFB) has received increasing attention owing to its attractive features for large-scale storage applications. However,...


2018 ◽  
Vol 6 (15) ◽  
pp. 6625-6632 ◽  
Author(s):  
Purna C. Ghimire ◽  
Rüdiger Schweiss ◽  
Günther G. Scherer ◽  
Nyunt Wai ◽  
Tuti M. Lim ◽  
...  

Binder free titanium carbide decorated graphite felt as high performance negative electrode in vanadium redox flow battery.


Author(s):  
Jens Noack ◽  
Lars Wietschel ◽  
Nataliya Roznyatovskaya ◽  
Karsten Pinkwart ◽  
Jens Tübke

A techno-economic model was developed to investigate the influence of components on the system costs of redox flow batteries. Sensitivity analyses were carried out based on a example of a 10 kW/120 kWh vanadium redox flow battery system and the costs of the individual components were analyzed. Particular consideration was given to the influence of material costs and resistances of bipolar plates and energy storage media as well as voltages and electric currents. Based on the developed model it was possible to formulate statements about the targeted optimization of existing battery systems and general aspects for future developments of redox flow batteries.


Membranes ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 214
Author(s):  
Dennis Düerkop ◽  
Hartmut Widdecke ◽  
Carsten Schilde ◽  
Ulrich Kunz ◽  
Achim Schmiemann

Redox flow batteries such as the all-vanadium redox flow battery (VRFB) are a technical solution for storing fluctuating renewable energies on a large scale. The optimization of cells regarding performance, cycle stability as well as cost reduction are the main areas of research which aim to enable more environmentally friendly energy conversion, especially for stationary applications. As a critical component of the electrochemical cell, the membrane influences battery performance, cycle stability, initial investment and maintenance costs. This review provides an overview about flow-battery targeted membranes in the past years (1995–2020). More than 200 membrane samples are sorted into fluoro-carbons, hydro-carbons or N-heterocycles according to the basic polymer used. Furthermore, the common description in membrane technology regarding the membrane structure is applied, whereby the samples are categorized as dense homogeneous, dense heterogeneous, symmetrical or asymmetrically porous. Moreover, these properties as well as the efficiencies achieved from VRFB cycling tests are discussed, e.g., membrane samples of fluoro-carbons, hydro-carbons and N-heterocycles as a function of current density. Membrane properties taken into consideration include membrane thickness, ion-exchange capacity, water uptake and vanadium-ion diffusion. The data on cycle stability and costs of commercial membranes, as well as membrane developments, are compared. Overall, this investigation shows that dense anion-exchange membranes (AEM) and N-heterocycle-based membranes, especially poly(benzimidazole) (PBI) membranes, are suitable for VRFB requiring low self-discharge. Symmetric and asymmetric porous membranes, as well as cation-exchange membranes (CEM) enable VRFB operation at high current densities. Amphoteric ion-exchange membranes (AIEM) and dense heterogeneous CEM are the choice for operation mode with the highest energy efficiency.


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