%0 Generic
%A Roberts, EPL
%A Scamman, DP
%D 2011
%F discovery:1527601
%I Electricity Energy Storage Systems, US Department of Energy
%K Redox flow battery, polysulphide bromine, techno-economic modelling
%T Techno-Economic Modelling Of A Utility-Scale Redox Flow Battery System
%U https://discovery.ucl.ac.uk/id/eprint/1527601/
%X 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.
%Z This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.