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Techno-Economic Modelling Of A Utility-Scale Redox Flow Battery System

Roberts, EPL; Scamman, DP; (2011) Techno-Economic Modelling Of A Utility-Scale Redox Flow Battery System. In: (Proceedings) Electrical Energy Storage Applications and Technologies Conference 2011, San Diego, California, US. Electricity Energy Storage Systems, US Department of Energy Green open access

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Abstract

A one-dimensional numerical model has been developed for redox flow battery (RFB) systems with bipolar flow-by electrodes, soluble redox couples, and recirculating batch operation. Overpotential losses were estimated from the Butler-Volmer equation, accounting for mass-transfer. The model predicted the variation in concentration and current along the electrode and determined the charge-discharge efficiency, energy density, and power density. The model was validated using data obtained from a pilot-scale polysulphide-bromine (PSB) system commercialized by Regenesys Technologies (UK) Ltd. The model was able to predict cell performance, species concentration, current distribution, and electrolyte deterioration for the Regenesys system. Based on 2006 prices, the system was predicted to make a net loss of 0.45 p kWh−1 at an optimum current density of 500 A m−2 and an energy efficiency of 64%. The economic viability was found to be strongly sensitive to the kinetics, capital costs, and the electrical energy price differential.

Type: Proceedings paper
Title: Techno-Economic Modelling Of A Utility-Scale Redox Flow Battery System
Event: Electrical Energy Storage Applications and Technologies Conference 2011, San Diego, California, US
Location: San Diego
Dates: 17 October 2011 - 19 October 2011
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.sandia.gov/ess/EESAT/2011_papers/Monday...
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Redox flow battery, polysulphide bromine, techno-economic modelling
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1527601
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