Scale-up studies of an Fe/Cr redox flow battery based on shunt current analysis

Scale-up studies of a 0.7 kW single stack redox flow battery to a 2.1 kW three-stack assembly based on shunt current analysis are presented. The influence of the shunt-dependant design parameters on the energy efficiency of the system has been analysed for a single stack battery. Scale-up studies have been carried out in order to achieve energy efficiency in the three-stack assembly similar to that obtained for the single-stack system. The influence of the length of the hydraulic interconnection of the stacks and the assembly current on energy efficiency has been analysed. A shunt current calculation model for a three-stack assembly has been developed.

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