Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications

Luo, Qingtao; Zhang, Huaming; Chen, Jian; Peng, Qian; Zhai, Yunfeng

doi:10.1016/j.memsci.2007.11.055

Cited by 249 publications

(152 citation statements)

References 14 publications

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“…[9][10][11][12][13][14][15][16][17][18][19] The properties of the IEM greatly affect the resulting performance of the VRB. The membranes traditionally used in VRB are perfluorosulfonic acid polymers such as Dupont's NafionÒ.…”

Section: 8mentioning

confidence: 99%

Ion exchange membranes for vanadium redox flow battery (VRB) applications

Zhang

Mai

et al. 2011

Energy Environ. Sci.

914

623

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The vanadium redox flow battery (VRB) has received wide attention due to its attractive features for large scale energy storage. The key material of a VRB is an ion exchange membrane (IEM) that prevents cross mixing of the positive and negative electrolytes, while still allowing the transport of ions to complete the circuit during the passage of current. This review focuses on all aspects related to IEMs that are of relevance to understand IEMs better. An overview of the general issues of VRBs will be given first, after which the role of the IEM will be outlined together with the material requirements for advanced alternative IEMs. Finally, the recent progress of IEMs in VRBs will be reviewed and directions will be given for the development of next-generation materials.

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Section: 8mentioning

confidence: 99%

Ion exchange membranes for vanadium redox flow battery (VRB) applications

Zhang

Mai

et al. 2011

Energy Environ. Sci.

914

623

View full text Add to dashboard Cite

show abstract

“…Nafion is the most commonly used membrane in VRB due to its high proton conductivity, good mechanical and chemical stability. However, the extremely high cost and low ion selectivity (high vanadium crossover) of Nafion membrane have limited their further commercialization [7][8][9][10]. Thus alternative membranes for VRB are being researched in these years [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Poly(tetrafluoroethylene) reinforced sulfonated poly(ether ether ketone) membranes for vanadium redox flow battery application

Wei¹,

Zhang²,

Li³

et al. 2012

Journal of Power Sources

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“…[20][21][22][23] However, in addition to the remaining cost issue, the area resistance of Nafion often increased as a result of these modifications. 21,23 Alternatively, non-fluorinated membranes * Electrochemical Society Member. z E-mail: lorenz.gubler@psi.ch are being developed with a view to reducing cost and improving vanadium barrier properties.…”

mentioning

confidence: 99%

Bifunctional Ion-Conducting Polymer Electrolyte for the Vanadium Redox Flow Battery with High Selectivity

Nibel

Schmidt

Gubler

2016

J. Electrochem. Soc.

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The need for electrochemical energy storage increases along with the growing share of fluctuating renewables for power generation. The all-vanadium redox flow battery (VRB) has experienced increasing attention in this context. Its electrolyte membrane is a key component, yet currently perfluorinated materials (e.g., Nafion) are mainly used in VRBs, which have neither been designed for this particular application, nor are they cost-effective. The cross-over of redox active vanadium species impairs cell efficiency, in particular in case of thin Nafion membranes with low ohmic resistance. Here, we present a potentially generic concept of a bifunctional ion-conducting membrane prepared by radiation grafting with sulfonic acid proton exchange sites and amidoxime moieties. The crossover of vanadium-ions is reduced four-fold in the presence of amidoxime groups without markedly impairing the conductivity of the membrane. A VRB cell containing such membrane shows increased energy efficiency and negligible capacity fading over 122 charge / discharge cycles compared to cells with Nafion membrane, which showed a loss of discharge capacity of around 35% after 35 cycles and considerable electrolyte imbalance. The growing need for energy and urge to reduce CO 2 emissions require clean and renewable energy sources, such as wind and solar power.1-3 Since these primary energies are inherently intermittent, 4 the development of adequate energy storage scenarios is essential. 5,6Among the various energy storage concepts, batteries have been shown to be especially promising. 7,8 Batteries for grid-scale energy storage require good cycling stability, rapid response to changes, high roundtrip efficiency and reasonable lifecycle costs.Redox flow batteries (RFBs) can fulfill these requirements 9 to target applications in the MW to GW power scale with typical charge/ discharge times of 4 to 6 h. 10 Key advantages over conventional rechargeable grid-scale batteries, such as Na-S batteries, are the independent scalability of energy and power, inherent safety, deep discharge capability and low self-discharge. 7,11,12 A redox flow battery consists of two external tanks filled with liquid electrolyte and a stack of cells that contain porous electrodes separated by an ion exchange membrane (IEM). The IEM avoids cross-mixing of redoxactive species and allows the transport of background electrolyte ions. The all-vanadium redox flow battery (VRB) is the most advanced type.13 VRBs use the same redox-active element on the negative and positive electrode, preventing irreversible cross-contamination of the electrolytes.14 The membrane is a key cost driver in a VRB system and can account for the major share of the stack cost. 15 An ideal membrane for an RFB should have low crossover of redox-active species and water, low cost, high conductivity, and high chemical stability in the respective electrolyte solution. 16Depending on the nature of the exchange groups, IEMs are generally classified into cation and anion exchange membranes (CEMs, AEMs). Variou...

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Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications

Cited by 249 publications

References 14 publications

Ion exchange membranes for vanadium redox flow battery (VRB) applications

Ion exchange membranes for vanadium redox flow battery (VRB) applications

Poly(tetrafluoroethylene) reinforced sulfonated poly(ether ether ketone) membranes for vanadium redox flow battery application

Bifunctional Ion-Conducting Polymer Electrolyte for the Vanadium Redox Flow Battery with High Selectivity

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