Author’s Accepted Manuscript Commercial perfluorosulfonic acid membranes for vanadium redox flow battery: effect of ion- exchange capacity and membrane internal structure Jiří Vrána, Jiří Charvát, Petr Mazúr, Petr Bělský, Jan Dundálek, Jaromír Pocedič, Juraj Kosek PII: S0376-7388(17)32741-2 DOI: https://doi.org/10.1016/j.memsci.2018.02.011 Reference: MEMSCI15935 To appear in: Journal of Membrane Science Received date: 22 September 2017 Revised date: 6 February 2018 Accepted date: 8 February 2018 Cite this article as: Jiří Vrána, Jiří Charvát, Petr Mazúr, Petr Bělský, Jan Dundálek, Jaromír Pocedič and Juraj Kosek, Commercial perfluorosulfonic acid membranes for vanadium redox flow battery: effect of ion-exchange capacity and membrane internal structure, Journal of Membrane Science, https://doi.org/10.1016/j.memsci.2018.02.011 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. www.elsevier.com/locate/memsci