Recent development of polymer membranes as separators for all-vanadium redox flow batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72805-72815 ◽  
Author(s):  
The Nam Long Doan ◽  
Tuan K. A. Hoang ◽  
P. Chen
Keyword(s):  
Ionic Conductivity ◽  
Polymer Membranes ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Membrane Separator ◽  
The Cross ◽  
Vanadium Redox ◽  
Vanadium Ions

A key component for all-vanadium redox flow batteries is the membrane separator, which separates the positive and negative half-cells and prevents the cross-mixing of vanadium ions, while providing required ionic conductivity.

Influences of Permeation of Vanadium Ions through PVDF-g-PSSA Membranes on Performances of Vanadium Redox Flow Batteries

2005 ◽  
Vol 109 (43) ◽  
pp. 20310-20314 ◽  
Author(s):  
Xuanli Luo ◽  
Zhengzhong Lu ◽  
Jingyu Xi ◽  
Zenghua Wu ◽  
Wentao Zhu ◽  
...  
Keyword(s):  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox ◽  
Vanadium Ions

scholarly journals Ex-Situ Evaluation of Commercial Polymer Membranes for Vanadium Redox Flow Batteries (VRFBs)

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 926
Author(s):  
Nana Zhao ◽  
Harry Riley ◽  
Chaojie Song ◽  
Zhengming Jiang ◽  
Keh-Chyun Tsay ◽  
...  
Keyword(s):  
Large Scale ◽  
Polymer Membranes ◽  
Ex Situ ◽  
Anion Exchange Membranes ◽  
In Situ Testing ◽  
Ionic Charge ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Polymer membranes play a vital role in vanadium redox flow batteries (VRFBs), acting as a separator between the two compartments, an electronic insulator for maintaining electrical neutrality of the cell, and an ionic conductor for allowing the transport of ionic charge carriers. It is a major influencer of VRFB performance, but also identified as one of the major factors limiting the large-scale implementation of VRFB technology in energy storage applications due to its cost and durability. In this work, five (5) high-priority characteristics of membranes related to VRFB performance were selected as major considerable factors for membrane screening before in-situ testing. Eight (8) state-of-the-art of commercially available ion exchange membranes (IEMs) were specifically selected, evaluated and compared by a set of ex-situ assessment approaches to determine the possibility of the membranes applied for VRFB. The results recommend perfluorosulfonic acid (PFSA) membranes and hydrocarbon anion exchange membranes (AEMs) as the candidates for further in-situ testing, while one hydrocarbon cation exchange membrane (CEM) is not recommended for VRFB application due to its relatively high VO2+ ion crossover and low mechanical stability during/after the chemical stability test. This work could provide VRFB researchers and industry a valuable reference for selecting the polymer membrane materials before VRFB in-situ testing.

scholarly journals Electrochemical oscillation of vanadium ions in anolyte

2017 ◽  
Vol 7 (3) ◽  
pp. 139 ◽  
Author(s):  
Hao Peng ◽  
Zuohua Liu ◽  
Changyuan Tao
Keyword(s):  
Power Consumption ◽  
Chemical Dissolution ◽  
Redox Flow Batteries ◽  
New Methods ◽  
Oscillation Phenomenon ◽  
Flow Batteries ◽  
First Time ◽  
Vanadium Redox ◽  
Electrochemical Oscillation ◽  
Vanadium Ions

<p><span lang="EN-GB">Periodic electrochemical oscillation of the anolyte was reported for the first time in a simulated charging process of the vanadium redox flow batteries. The electrochemical oscillation could be explained in terms of the competition between the growth and the chemical dissolution of V<sub>2</sub>O<sub>5</sub> film. Also, the oscillation phenomenon was possible to regular extra power consumption. The results of this paper might enable new methods to improve the charge efficiency and energy saving for vanadium redox flow batteries.</span></p>

A recast Nafion/graphene oxide composite membrane for advanced vanadium redox flow batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3756-3763 ◽  
Author(s):  
Lihong Yu ◽  
Feng Lin ◽  
Ling Xu ◽  
Jingyu Xi
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Bonds ◽  
Composite Membrane ◽  
Mechanical Stability ◽  
Oxide Composite ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox ◽  
Vanadium Ions

GO nanosheets in Nafion effectively block the crossover of vanadium ions while hydrogen bonds between GO and Nafion increase the mechanical stability, significantly improving the efficiency and cyclability in a rNafion/GO membrane based VRFB.

A combined theoretical-experimental study of interactions between vanadium ions and Nafion membrane in all-vanadium redox flow batteries

2018 ◽  
Vol 373 ◽  
pp. 150-160 ◽  
Author(s):  
Nadia N. Intan ◽  
Konstantin Klyukin ◽  
Tawanda J. Zimudzi ◽  
Michael A. Hickner ◽  
Vitaly Alexandrov
Keyword(s):  
Experimental Study ◽  
Nafion Membrane ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox ◽  
Vanadium Ions

A highly proton-/vanadium-selective perfluorosulfonic acid membrane for vanadium redox flow batteries

2019 ◽  
Vol 43 (28) ◽  
pp. 11374-11381 ◽  
Author(s):  
Xiao-Bing Yang ◽  
Lei Zhao ◽  
Kokswee Goh ◽  
Xu-Lei Sui ◽  
Ling-Hui Meng ◽  
...  
Keyword(s):  
Perfluorosulfonic Acid ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox ◽  
Polar Clusters ◽  
Vanadium Ions

The polar clusters of Nafion are blocked by the incorporation of the nanohybrid, which contributes to suppress vanadium ions crossover.

scholarly journals Direct Measurement of Crossover and Interfacial Resistance of Ion-Exchange Membranes in All-Vanadium Redox Flow Batteries

Membranes ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 126
Author(s):  
Yasser Ashraf Gandomi ◽  
Doug S. Aaron ◽  
Zachary B. Nolan ◽  
Arya Ahmadi ◽  
Matthew M. Mench
Keyword(s):  
Ionic Conductivity ◽  
Ion Exchange ◽  
High Performance ◽  
Single Layer ◽  
Experimental System ◽  
Ion Exchange Membranes ◽  
Interfacial Resistance ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Among various components commonly used in redox flow batteries (RFBs), the separator plays a significant role, influencing resistance to current as well as capacity decay via unintended crossover. It is well-established that the ohmic overpotential is dominated by the membrane and interfacial resistance in most aqueous RFBs. The ultimate goal of engineering membranes is to improve the ionic conductivity while keeping crossover at a minimum. One of the major issues yet to be addressed is the contribution of interfacial phenomena in the influence of ionic and water transport through the membrane. In this work, we have utilized a novel experimental system capable of measuring the ionic crossover in real-time to quantify the permeability of ionic species. Specifically, we have focused on quantifying the contributions from the interfacial resistance to ionic crossover. The trade-off between the mass and ionic transport impedance caused by the interface of the membranes has been addressed. The MacMullin number has been quantified for a series of electrolyte configurations and a correlation between the ionic conductivity of the contacting electrolyte and the Nafion® membrane has been established. The performance of individual ion-exchange membranes along with a stack of various separators have been explored. We have found that utilizing a stack of membranes is significantly beneficial in reducing the electroactive species crossover in redox flow batteries compared to a single membrane of the same fold thickness. For example, we have demonstrated that the utilization of five layers of Nafion® 211 membrane reduces the crossover by 37% while only increasing the area-specific resistance (ASR) by 15% compared to a single layer Nafion® 115 membrane. Therefore, the influence of interfacial impedance in reducing the vanadium ion crossover is substantially higher compared to a corresponding increase in ASR, indicating that mass and ohmic interfacial resistances are dissimilar. We have expanded our analysis to a combination of commercially available ion-exchange membranes and provided a design chart for membrane selection based on the application of interest (short duration/high-performance vs. long-term durability). The results of this study provide a deeper insight into the optimization of all-vanadium redox flow batteries (VRFBs).

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