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

Chromik, Andreas; Santos, Antonio Rodolfo dos; Turek, Thomas; Kunz, Ulrich; Häring, Thomas; Kerres, Jochen

doi:10.1016/j.memsci.2014.11.036

Cited by 48 publications

(22 citation statements)

References 36 publications

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“…This is because concentration polarization which caused by the crossover of vanadium ions in negative electrolyte and positive electrolyte led to voltage loss during the cycle test [39]. And, similar phenomenon has also been observed in VRFB with other membranes [40]. The results of the VRFB cell tests suggested that the cost-effective PyPPSU membranes could be promising alternative membrane for VRFB application.…”

Section: Membranesupporting

confidence: 53%

Poly(phenyl sulfone) anion exchange membranes with pyridinium groups for vanadium redox flow battery applications

Zhang

Wang

et al. 2015

Journal of Power Sources

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Section: Membranesupporting

confidence: 53%

Poly(phenyl sulfone) anion exchange membranes with pyridinium groups for vanadium redox flow battery applications

Zhang

Wang

et al. 2015

Journal of Power Sources

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“…Another strategy to improve the performance of VRFBs is using acid-base blend membranes composed of a sulfonated aryl polymer and a basic polymer with aryl group-based polymers [ 16 ]. These types of blend membranes, developed by the group of Dr. Kerres over more than 15 years of research, displayed improved chemical and mechanical stability compared to membranes consisting of homopolymers [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Novel Anion-Exchange Blend Membranes (AEBMs) to Vanadium Redox Flow Batteries

2018

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Both cation-exchange membranes and anion-exchange membranes are used as ion conducting membranes in vanadium redox flow batteries (VRFBs). Anion-exchange membranes (AEMs) are applied in vanadium redox flow batteries due to the high blocking property of vanadium ions via the Donnan exclusion effect. In this study, novel anion-exchange blend membranes (AEBMs) were prepared, characterized, and applied in VRFBs. Bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide), poly[(1-(4,4′-diphenylether)-5-oxybenzimidazole)-benzimidazole] (PBI-OO) and sulfonated polyether sulfone polymer were combined to prepare 3-component AEBMs with 1,2,4,5-tetramethylimidazole (TMIm) for quaternization. 3-component AEBMs showed significantly enhanced chemical and mechanical properties compared with those of 2-component AEBMs, resulting in an improved performance in VRFBs. The compositions of the anion-exchange polymers in 3-component AEBMs were systematically varied to optimize the AEBMs for the redox-flow battery application. While the 3-component AEBMs showed comparable efficiencies with Nafion® 212 membranes, they displayed improved vanadium ions cross-over as was confirmed by open circuit voltage tests and capacity fade tests conducted in VRFBs. In addition, one of the synthesized 3-component AEBM had a superior coulombic efficiency and capacity retention in a charging–discharging test over 300 cycles at a current density of 40 mA/cm2. It can thus be concluded that 3-component AEBMs are promising candidates for long-term operation in VRFBs.

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“…As one kind of energy storage systems, vanadium redox flow battery (VRB) is the most promising technology due to several advantages such as its high storage capacity, moderate operating temperature, and long cycle life [1][2][3][4][5][6][7][8][9][10][11]. A VRB is an electrochemical system storing electric energy in chemical energy, which consists of two electrolyte tanks equipped with V(II)/V(III) and V(IV)/V(V) redox couples in sulfuric acid solution, two pumps, two electrodes, and a battery stack section with ion exchange membranes (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Nanocomposite Membranes for Vanadium Redox Flow Batteries

Cha

2015

Journal of Nanomaterials

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The vanadium redox flow battery (VRB) has received considerable attention due to its long cycle life, flexible design, fast response time, deep-discharge capability, and low pollution emissions in large-scale energy storage. The key component of VRB is an ion exchange membrane that prevents cross mixing of the positive and negative electrolytes by separating two electrolyte solutions, while allowing the conduction of ions. This review summarizes efforts in developing nanocomposite membranes with reduced vanadium ion permeability and improved proton conductivity in order to achieve high performance and long life of VRB systems. Moreover, functionalized nanocomposite membranes will be reviewed for the development of next-generation materials to further improve the performance of VRB, focusing on their properties and performance of VRB.

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

Cited by 48 publications

References 36 publications

Poly(phenyl sulfone) anion exchange membranes with pyridinium groups for vanadium redox flow battery applications

Poly(phenyl sulfone) anion exchange membranes with pyridinium groups for vanadium redox flow battery applications

Application of Novel Anion-Exchange Blend Membranes (AEBMs) to Vanadium Redox Flow Batteries

Recent Development of Nanocomposite Membranes for Vanadium Redox Flow Batteries

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