Project description
The aim of this collaborative project is to investigate and develop a FeCr-based redox flow battery (FeCrRFB) with a rebalancing (RBC) system using a low-cost mining produced iron-chromium product stream as electrolyte. To attain this, three interrelated aspects will be investigated: i) the upstream conversion of the FeCr product stream to an electrolyte using a novel membrane based solvent extraction process, ii) the development of novel and state of the art cation and anion exchange membranes and iii) the development of a rebalancing system to redress capacity loss.
State of research
Anion exchange blend membranes based on PPFSt (Figure 1) exhibited better single cell vanadium redox flow battery performance in an acidic condition in terms of effciencies, open circuit voltage test and charge-discharge cycling test than that of a Nafion 212 membrane. The battery performance results of synthesized blend membranes suggest that those novel anion exchange membranes are expected to good performance in an acidic electrolyte condition in a FeCrRFB.
Project partner
- Prof. Henning Krieg, Focus Area: Chemical Resource Beneficiation, North-West University, South Africa
- Dr. Vladimir Atanasov, University of Stuttgart, Institute of Chemical Process Engineering (ICVT), Department of Polymer and Membrane Development, Stuttgart, Germany
- Dr. Jochen Kerres, FZ Jülich GmbH, Helmholtz-Institute for Renewable Energies (HI-ERN, IEK-11), Department of Electrocatalytic Interface Engineering, Erlangen, Germany
Ansprechpartner
Vladimir Atanasov
Dr. rer. nat.Gruppenleiter
Hyeongrae Cho
Dr.-Ing.Wissenschaftlicher Mitarbeiter