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European Training Network to improve materials for high-performance, low-cost next- generation redox-flow batteries

Deliverables

Rheology studies of organic and polymer RFBs (v1)

Lead by CNRS-LRP. Rheological analysis for developed electrolytes under different processing conditions, in particular flow-rates and temperature will be realized by LRP-ESR1.

Basic model of an organic flow battery

Component based models and ex-situ analysis data of organic RFBs will be coupled with non-equilibrium thermodynamics by ZHA. Developed model will be validated by partners from WP3.

Optimized anode for oxygen evolution in a 3-electrode Zn air battery

JM-ESR1 will test the GDEs as cathodes in a three-electrode setup battery and as both cathode and anode (bifunctional air electrode) in a two-electrode setup.

Ionomer membranes with improved functional properties and stability (v1)

Lead by CNRS-LEPMI. LEP-ESR1 will develop and characterize a suitable membrane with cation or anion grafted on the hydrophilic chains.

Optimized GDE cathode for oxygen reduction in a 3-electrode Zn air battery

DEN-ESR1 will synthesize electro-catalysts for oxygen reduction only and for oxygen reduction and evolution (bifunctional catalyst) to be integrated into innovative architecture of gas diffusion electrodes (GDE).

Test cell optimized for organic flow battery system

A prototype cell, equipped with gaskets from UOS-ESR1 and the membrane from LEP-ESR1, will be developed by JEN-ESR1 with conventional and rapid prototyping techniques.

System analysis for the three systems (v1)

The models which are developed at component and cell level will be used in WP1 for system design. The validation will be conducted through system analysis.

Study on the effect of organic and inorganic additive on discharge behaviour (v1)

The detramental effects of ZnO dentrites to the performance of RFB will be avoided by investigating the effect of the addition of inorganic additives (i.e. CaO or MgO), polymers as well as surfactants.

Test rig with in-situ measurement of bromine crossover and locally resolved current density measurements

Bromine crossover will be analysed in the anode exhaust where bromine ions will be measured with spectroscopic techniques. The segmented cell which is developed at ICT for vanadium based RFBs will be implemented to hydrogen bromine system in order to anaylse the current distrubitoon across the electrode.

Study on the rhe. characterization of zinc slurry regarding colloidal stability (v1)

Lead by CNRS-LRP. Zinc slurries will be developed with high colloidal stability and high discharge properties. Parameters such as zinc powder, additives and the carbonate amount will be optimized by ICT-ESR2.

10 relevant publications by mid-term

A total of 30 publications are expected by month 48 (see D6.4). This deliverable will provide an earlier indication of the project's progress.

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Publications

A 1D Model of a Hydrogen-Bromine Redox Flow Battery

Author(s): Jakub Wlodarczyk
Published in: 2018

Crossover-tolerant coated platinum catalysts in hydrogen/bromine redox flow battery

Author(s): Kobby Saadi, Pilkhaz Nanikashvili, Zhanna Tatus-Portnoy, Samuel Hardisty, Victor Shokhen, Melina Zysler, David Zitoun
Published in: Journal of Power Sources, Issue 422, 2019, Page(s) 84-91, ISSN 0378-7753
DOI: 10.1016/j.jpowsour.2019.03.043

Development of Flow Fields for Zinc Slurry Air Flow Batteries

Author(s): Nak Heon Choi, Diego del Olmo, Peter Fischer, Karsten Pinkwart Jens Tübke 
Published in: Batteries, Issue 01.03.2020, 2020, Page(s) 15, ISSN 2313-0105

Membranes for zinc-air batteries: Recent progress, challenges and perspectives

Author(s): Misgina Tilahun Tsehaye, Fannie Alloin, Cristina Iojoiu, Ramato Ashu Tufa, David Aili, Peter Fischer, Svetlozar Velizarov
Published in: Journal of Power Sources, Issue 475, 2020, Page(s) 228689, ISSN 0378-7753
DOI: 10.1016/j.jpowsour.2020.228689

Open-Circuit Voltage Comes from Non-Equilibrium Thermodynamics

Author(s): Diego del Olmo, Michal Pavelka, Juraj Kosek
Published in: Journal of Non-Equilibrium Thermodynamics, Issue 0/0, 2020, ISSN 0340-0204
DOI: 10.1515/jnet-2020-0070

An enhanced 1-D model of a hydrogen-bromine flow battery

Author(s): Wlodarczyk, Jakub Cantu, Brenda Fischer, Peter Küttinger, Michael Schumacher, Jürgen
Published in: 2019
DOI: 10.21256/zhaw-2791

Mechanical variations affecting sealing performance in redox flow batteries

Author(s): D. Jannes, L. Hörl, F. Bauer
Published in: Fluid Sealing, Issue 25, 04.03.2020, 2020, Page(s) 120-133

Sealing in redox flow batteries: influence of HBr chemical impact

Author(s): Detlef Jannes, Dipl. Ing. Lothar Hörl, Dr. Ing. Frank Bauer
Published in: Jahrbuch Dichten. Kleben. Polymer. 2020, 2019, Page(s) 254-267

Laser cut elastomers for redox flow battery prototypes

Author(s): Detlef Jannes, Dipl. Ing. Lothar Hörl, Dr. Ing. Frank Bauer
Published in: Dichtungskolloqium 2019, 2019, Page(s) 25-33