Covalently incorporating a cationic charged layer onto Nafion membrane by radiation-induced graft copolymerization to reduce vanadium ion crossover

Ma, Jun; Wang, Shuojue; Peng, Jing; Yuan, Jie; Yu, Chao; Li, Jiuqiang; Ju, Xuecheng; Zhai, Maolin

doi:10.1016/j.eurpolymj.2013.04.010

Cited by 37 publications

(12 citation statements)

References 33 publications

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“…It is worth mentioning that the variation of the monomer ratio in the feed could affect the specific amount of poly(dimethylaminoethyl methacrylate) (PDMAEMA) in the AIEM. It is expected that a higher DMAEMA content could lead to a lower crossover of vanadium ions in VRFBs owing to the Donnan exclusion effect [35], while a higher PSt content in the AIEM would be responsible for higher conductivity because of the –SO 3 H pendant [22,23,36]. Thus, we needed to balance the ratio of the two monomers in the AIEM to obtain good performance in VRFBs.…”

Section: Resultsmentioning

confidence: 99%

Amphoteric Ion Exchange Membranes Prepared by Preirradiation-Induced Emulsion Graft Copolymerization for Vanadium Redox Flow Battery

et al. 2019

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A series of poly(vinylidene difluoride)-based amphoteric ion exchange membranes (AIEMs) were prepared by preirradiation-induced graft copolymerization of styrene and dimethylaminoethyl methacrylate in an aqueous emulsion media followed by solution casting, sulfonation, and protonation. The effects of absorbed dose and comonomer concentration on grafting yield (GY) were investigated. The highest GY of 44.5% at a low comonomer concentration of 0.9 M could be achieved. FTIR, TGA, and X-ray photoelectron spectroscopy (XPS) confirmed the successful grafting and sulfonation of the as-prepared AIEMs. Properties of the AIEMs such as water uptake, ion exchange capacity (IEC), ionic conductivity, and crossover behavior of VO2+ ions prepared by this novel technique were systematically investigated and compared with those of the commercial Nafion 115 membrane. It was found that at a GY of 28.4%, the AIEMs showed higher IEC and conductivity, lower permeability of VO2+ ions, and a longer time to maintain open circuit voltage than Nafion 115, which was attributed to their high GY and elaborate amphoteric structure. Consequently, this work has paved the way for the development of green and low-cost AIEMs with good performance for vanadium redox flow battery applications.

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Section: Resultsmentioning

confidence: 99%

Amphoteric Ion Exchange Membranes Prepared by Preirradiation-Induced Emulsion Graft Copolymerization for Vanadium Redox Flow Battery

et al. 2019

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“…A modified Nafion ® membrane with reduced vanadium permeability was prepared by radiation-induced graft copolymerization of DMAEMA onto Nafion ® substrate and subsequent protonation for the application in VRFB [241]. The conductivity and permeability of vanadium ions of these membranes with varying grafting yields were also measured.…”

Section: Figure 28mentioning

confidence: 99%

Radiation-grafted materials for energy conversion and energy storage applications

Nasef

Gürsel

Karabelli

et al. 2016

Progress in Polymer Science

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“…[ 57 ] 2) Positively charged polyelectrolytes, e.g., polypyrrole, [ 39,69 ] polybenzimidazole, [ 70 ] polyethylenimine, [ 71 ] dimethylaminoethyl, and methacrylate. [ 72 ] 3) Layer‐by‐layer (LbL) [ 73 ] assembly of positively and negatively charged polyelectrolytes.…”

Section: Layered Composite Membranesmentioning

confidence: 99%

Designing Ion‐Selective Membranes for Vanadium Redox Flow Batteries

Amiri

Khosravi

Ejeian

et al. 2021

Adv Materials Technologies

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With the increase in the world's population and industrialization, world energy consumption experienced an ascending trend in the last years, [1] which is anticipated to continue in the future. As such, the sustainable supply of energy is critical, relying on both renewable and unrenewable sources. However, an essential aspect in this context is that generally, the rates of generation and consumption of energy do not coincide with each other because of the need for peak shaving or load leveling in power grids or due to the intermittent nature of such ever-developing renewable sources like solar or wind energies. Accordingly, to overcome such temporal mismatches, the adaptation of efficient and reliable timeshifting technologies, i.e., energy storage systems (ESSs), must be pursued. Such solutions also make it possible to develop distributed energy generation technologies as well as increase efficiency. Among various developed or emerging ESSs, [2,3] electrochemical batteries show longer discharge time at the rated power (energy) in larger-scale power system. [4] Redox flow batteries (RFBs) are a well-known type of electrochemical rechargeable batteries. Anodic and/or cathodic redox-active materials are commonly dissolved in their respective electrolyte and flow from external reservoirs on electrodes where they undergo redox reactions during charge/discharge processes. These batteries have shown some advantages such as rapid response time, flexible installation, easy modularization, scalability, and short construction cycles, were made them suitable candidates for large-scale electrical energy storage purposes. [7] Among all various RFBs, Vanadium redox flow batteries (VRFBs) are the most widely studied, promising, and wellestablished technology due to their attractive characteristics for large-scale ESS. The idea of using vanadium redox couples goes back to 1933 and 1954 when two patents of P.A Pissoort (France) and Walter Kango (Germany) were established. [8] However, the first VRFBs were developed in the 1980s by the Skyllas-Kazacos group. Since then, the history of VRFBs is significantly tied with different efforts for the development of other flow or redox flow-based batteries, as schematically presented in Figure 1a. Motivated by promising as well as proven merits, different VRFBs demonstrations with the scale from tens of kW to MW have been successfully tested, and it is believed that the It is predicted that the future of energy will mainly rely on batteries such as vanadium redox flow batteries (VRFBs), and its related research has already attracted significant attention. The primary function of a membrane in VRFBs is to control proton transport between the half-cells and to hinder admixing the anolyte and catholyte at the same time. However, to develop a low-cost and energy-efficient VRFB, other membrane roles are crucial. The combination of a highly stable backbone of polytetrafluoroethylene with hydrophilic perfluorinated-vinyl-polyether side chains equipped with sulfonic acid groups (Nafion membranes)...

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Covalently incorporating a cationic charged layer onto Nafion membrane by radiation-induced graft copolymerization to reduce vanadium ion crossover

Cited by 37 publications

References 33 publications

Amphoteric Ion Exchange Membranes Prepared by Preirradiation-Induced Emulsion Graft Copolymerization for Vanadium Redox Flow Battery

Amphoteric Ion Exchange Membranes Prepared by Preirradiation-Induced Emulsion Graft Copolymerization for Vanadium Redox Flow Battery

Radiation-grafted materials for energy conversion and energy storage applications

Designing Ion‐Selective Membranes for Vanadium Redox Flow Batteries

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