Title

Determining Vanadium Concentrations Using the UV-Vis Response Method

Authors

Authors

R. P. Brooker; C. J. Bell; L. J. Bonville; H. R. Kunz;J. M. Fenton

Comments

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Abbreviated Journal Title

J. Electrochem. Soc.

Keywords

REDOX FLOW BATTERY; CHARGE; STATE; Electrochemistry; Materials Science, Coatings & Films

Abstract

The ability to determine the state of charge of vanadium solutions is critical to understanding reaction mechanisms and charge transport dynamics. This paper describes in detail the methods used to generate quantitative concentrations of three of the four species in an all-vanadium flow battery. The UV-Vis method was shown to provide concentration values that were more reliable than using either an electrode voltage or the integrated current with respect to time. Furthermore, a method was proposed to bring flow battery system into charge balance by independently reducing the negative electrolyte. (C) The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. All rights reserved.

Journal Title

Journal of the Electrochemical Society

Volume

162

Issue/Number

4

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

A608

Last Page

A613

WOS Identifier

WOS:000349827200015

ISSN

0013-4651

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