An overview on the progress and development of modified sulfonated polyether ether ketone membranes for vanadium redox flow battery applications

Thiam, Baye Gueye; Magri, Anouar El; Vaudreuil, Sébastien

doi:10.1177/09540083211049317

Cited by 18 publications

(24 citation statements)

References 115 publications

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“…SPEEK was obtained and cleaned numerous times with deionized water before drying at 80 °C for 20 h. Sulfonation was confirmed by FT-IR and 1 H NMR spectra. Titration (Metrohm, 916 Ti-Touch potentiometric titrator) was then used to determine the degree of sulfonation (DS) of SPEEK, which was found to be ∼60% …”

Section: Methodsmentioning

confidence: 99%

“…Titration (Metrohm, 916 Ti-Touch potentiometric titrator) was then used to determine the degree of sulfonation (DS) of SPEEK, which was found to be ∼60%. 33 As shown in Scheme 1, for grafting of SA, SPEEK (10.00 g) was dissolved in a 250 mL reaction bottle containing 100 mL (10%, w/v) of DMF under strong agitation. Then, a known amount of CDI (8.9 mmol,1.44 g) (equivalent to 0.5 mol equivalent SPEEK −SO 3 H group) was added, 34 and SA (0.86 g) was added after stirring at 60 °C for 5 h. SPEEK-SA-50 was precipitated in excess propan-2-ol after stirring at 60 °C for another 5 h then rinsed several times with propan-2-ol and deionized water.…”

Section: Synthesis Of Speek and Speek-samentioning

confidence: 99%

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Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Wang

Wei

et al. 2023

Ind. Eng. Chem. Res.

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A sulfonated poly(ether ether ketone) (SPEEK) proton exchange membrane with side-chain grafted sulfamic acid (SA) was designed. The introduction of SA with an amphoteric functional group achieves the purpose of preventing the migration of vanadium ions in the case of a lossless proton conductive group (−SO3H), which is caused by the Donnan repulsion of a protonated −NH– group to a vanadium ion. At the same time, acid–base pairs and hydrogen bonds are formed between the sulfonated side-chain grafted secondary amine (−NH−) group and the sulfonic (−SO3H) group, which hinders the penetration of vanadium ions. The results show that the prepared SPEEK-SA-50 membrane has high proton conductivity (0.099 S cm–1) and vanadium ion selectivity (1.8 × 105 S min cm–3), and its selectivity is significantly improved compared with SPEEK (4.9 × 104 S min cm–3) and the Nafion 212 membrane (4.8 × 104 S min cm–3). Under the condition of 80 mA cm–2, the Coulombic efficiency (CE) of the vanadium redox flow battery with the SPEEK-SA-50 membrane is 95.45%, and the energy efficiency (EE) is 76.11%, which is better than that of the Nafion 212 membrane (CE: 86.39%; EE: 68.26%).

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Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Speek and Speek-samentioning

confidence: 99%

Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Wang

Wei

et al. 2023

Ind. Eng. Chem. Res.

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“…For material comparison, only the base polymer of the membrane is considered, as production of 3D membranes is usually carried out in the form of a composite membrane, i.e., 3D printing is used to manufacture the support, while other techniques are used to produce a selective layer. Materials are listed on the basis of reviews of conventional membranes [1,[21][22][23][24][25], 3DP polymers [17,18,20,26], and reviewed articles on 3DP membranes. Some 3D membrane materials are directly produced using common 3D printing technologies.…”

Section: Membrane Materialsmentioning

confidence: 99%

3D Printed and Conventional Membranes—A Review

et al. 2022

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Polymer membranes are central to the proper operation of several processes used in a wide range of applications. The production of these membranes relies on processes such as phase inversion, stretching, track etching, sintering, or electrospinning. A novel and competitive strategy in membrane production is the use of additive manufacturing that enables the easier manufacture of tailored membranes. To achieve the future development of better membranes, it is necessary to compare this novel production process to that of more conventional techniques, and clarify the advantages and disadvantages. This review article compares a conventional method of manufacturing polymer membranes to additive manufacturing. A review of 3D printed membranes is also done to give researchers a reference guide. Membranes from these two approaches were compared in terms of cost, materials, structures, properties, performance. and environmental impact. Results show that very few membrane materials are used as 3D-printed membranes. Such membranes showed acceptable performance, better structures, and less environmental impact compared with those of conventional membranes.

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“… 10 , 11 Nevertheless, the high vanadium permeability of sulfonated poly(arylene ether) membranes remains unresolved. 12 − 14 …”

Section: Introductionmentioning

confidence: 99%

Anion Exchange Membranes Based on Bis-Imidazolium and Imidazolium-Functionalized Poly(phenylene oxide) for Vanadium Redox Flow Battery Applications

Chen

et al. 2023

ACS Omega

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Although the Nafion membrane has a high energy efficiency, long service life, and operational flexibility when applied for vanadium redox flow battery (VRFB) applications, its applications are limited due to its high vanadium permeability. In this study, anion exchange membranes (AEMs) based on poly(phenylene oxide) (PPO) with imidazolium and bis-imidazolium cations were prepared and used in VRFBs. PPO with long-pendant alkyl-side-chain bis-imidazolium cations (BImPPO) exhibits higher conductivity than the imidazolium-functionalized PPO with short chains (ImPPO). ImPPO and BImPPO have a lower vanadium permeability (3.2 × 10 –9 and 2.9 × 10 –9 cm 2 s –1 ) than Nafion 212 (8.8 × 10 –9 cm 2 s –1 ) because the imidazolium cations are susceptible to the Donnan effect. Furthermore, under the current density of 140 mA cm –2 , the VRFBs assembled with ImPPO- and BImPPO-based AEMs exhibited a Coulombic efficiency of 98.5% and 99.8%, respectively, both of which were higher than that of the Nafion212 membrane (95.8%). Bis-imidazolium cations with long-pendant alkyl side chains contribute to hydrophilic/hydrophobic phase separation in the membranes, thus improving the conductivity of membranes and the performance of VRFBs. The VRFB assembled with BImPPO exhibited a higher voltage efficiency (83.5%) at 140 mA cm –2 than that of ImPPO (77.2%). These results of the present study suggest that the BImPPO membranes are suitable for VRFB applications.

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An overview on the progress and development of modified sulfonated polyether ether ketone membranes for vanadium redox flow battery applications

Cited by 18 publications

References 115 publications

Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

Side-Chain Grafting-Modified Sulfonated Poly(ether ether ketone) with Significantly Improved Selectivity for a Vanadium Redox Flow Battery

3D Printed and Conventional Membranes—A Review

Anion Exchange Membranes Based on Bis-Imidazolium and Imidazolium-Functionalized Poly(phenylene oxide) for Vanadium Redox Flow Battery Applications

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