Investigation of structural changes related to temperature: An understanding of H-bond based proton transfer in 4(5)-vinylimidazole and acrylic acid copolymer membrane

Jithunsa, Manita; Tashiro, Kohji; Chirachanchai, Suwabun

doi:10.1016/j.ssi.2008.12.019

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…Generally, the imidazole oligomer gave the conductivity about 10 −7 ~ 10 −4 S cm −1 , as reported by Schuster et al However, the conductivity of the QPTM membrane is as high as 0.0183 S cm −1 at 30 °C. The reason is probably that the structure of the synthesized fluoropolymer is similar to the fluorocarbon chain with sulfuric acid group in Nafion® membrane after doped with sulfuric acid solution …”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of quaternized poly (2,2,2‐trifluoroethyl methacrylate‐co‐N‐vinylimidazole) membrane for vanadium redox flow battery

Fang

Wei

et al. 2012

Polymers for Advanced Techs

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Aiming to develop a suitable ion exchange membrane for vanadium redox flow battery (VRB), a new kind of imidazolium salt type anion exchange membrane based on the copolymer of N‐vinylimidazole and 2,2,2‐trifluoroethyl methacrylate has been prepared. The membrane is characterized by means of water uptake, ion‐exchange capacity, ionic conductivity, and thermal stability. Furthermore, a VRB with this membrane is assembled, and the performance of such VRB is evaluated. The permeability experiments show that this membrane has reasonable low permeability of vanadium ions. The coulombic efficiency (CE) and energy efficiency (EE) of VRB with the synthesized membrane are 99.5% and 75.0%, whereas the CE and EE of the VRB with Nafion® 117 membrane are 82.6% and 72.6%, respectively. The synthesized membrane shows good chemical stability in VRB via more than 4000 cycles test. Therefore, this membrane shows good applicable potential in VRB. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 99%