relation: https://khub.utp.edu.my/scholars/11774/
title: Improving the redox flow battery performance of low-cost thin polyelectrolyte membranes by layer-by-Layer Surface assembly
creator: Sha'rani, S.S.
creator: Abouzari-Lotf, E.
creator: Nasef, M.M.
creator: Ahmad, A.
creator: Ting, T.M.
creator: Ali, R.R.
description: The search of new membranes for vanadium redox flow battery with low vanadium ions permeation rates, high ion conductivity, excellent proton conductivity, low area resistance, chemical stability, and low cost is on a soaring demand. In this work, a simple modification method is applied to improve the performance of commercially available low-cost membranes by applying several polyelectrolytes layers. Particularly, graphene-containing commercial perfluorinated sulfonic acid membrane of GN212C with a thickness of 33 μm is modified by introducing alternate layers of positively charged poly(diallyldimethylammonium chloride) and negatively charged poly(sodium styrene sulfonate). Microscopy and spectroscopy investigations indicate that the polyelectrolytes layers are successfully deposited on the membrane surface. The effects of the layer composition and number of bilayers are evaluated with regard to vanadium ion permeability, proton conductivity and battery performance. The modified membranes exhibit an improved vanadium (VO2+) barrier property, which enhances the VRFB single cell performance in terms of coulombic efficiency and energy efficiency compared to pristine GN212C and Nafion 117 membranes. The overall results suggest that the bi-ionically modified membrane is a potential candidate for application in flow battery despite its small thickness. © 2018 Elsevier B.V.
publisher: Elsevier B.V.
date: 2019
type: Article
type: PeerReviewed
identifier:   Sha'rani, S.S. and Abouzari-Lotf, E. and Nasef, M.M. and Ahmad, A. and Ting, T.M. and Ali, R.R.  (2019) Improving the redox flow battery performance of low-cost thin polyelectrolyte membranes by layer-by-Layer Surface assembly.  Journal of Power Sources, 413.  pp. 182-190.  ISSN 03787753     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058783942&doi=10.1016%2fj.jpowsour.2018.12.037&partnerID=40&md5=730796b8db5ba93b75b25f1d8afac058
relation: 10.1016/j.jpowsour.2018.12.037
identifier: 10.1016/j.jpowsour.2018.12.037