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Estimating the State-of-Charge of All-Vanadium Redox Flow Battery using a Divided, Open-circuit Potentiometric Cell

Mohd Rusllim, Mohamed and Hamzah, Ahmad and Mazrul Nizam, Abu Seman (2013) Estimating the State-of-Charge of All-Vanadium Redox Flow Battery using a Divided, Open-circuit Potentiometric Cell. Electronics and Electrical Engineering = Elektronika ir Elektrotechnika, 19 (3). pp. 37-42. ISSN 1392-1215 (print); 2029-5731 (online)

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Abstract

In this paper, mathematical modelling of oxidation-reduction redox potential for estimating the state-ofcharge of V-RFB is presented. The estimation is based on the Nernst equation, a mass balance, Faraday’s law of electrolysis, and 1st order kinetic equation. The 25-100 cm2 laboratories, unit cell V-RFB is chosen as a model reaction for electrolyte redox potential measurement. Preliminary experiment is carried out using a 100 cm2 laboratory unit but the estimated value produced is inaccurate. An alternative design of 25 cm2 laboratory, unit cell V-RFB using a divided, open-circuit potentiometric cell is used. The redox potential of V(III)/V(II) and V(IV)/V(V) is measured through combined Hg/Hg2SO4 reference electrode and carbon rod working electrode. The differences between the experimental and estimated values are highlighted.

Item Type: Article
Uncontrolled Keywords: Energy storage; modeling; redox flow batteries; state of-charge
Subjects: T Technology > TP Chemical technology
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Faculty of Electrical & Electronic Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 21 Mar 2016 08:12
Last Modified: 07 Feb 2018 07:02
URI: http://umpir.ump.edu.my/id/eprint/6543
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