In Situ Measurement of Localized Current Distribution in H 2 -Br 2 Redox Flow Batteries

Brenda Berenice Martinez Cantu, Peter Fischer, David Zitoun, Jens Tübke and Karsten Pinkwart
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Brenda Berenice Martinez Cantu: Applied Electrochemistry, Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer Straße 7, 76327 Pfinztal, Germany
Peter Fischer: Applied Electrochemistry, Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer Straße 7, 76327 Pfinztal, Germany
David Zitoun: Department of Chemistry, Bar Ilan Institute of Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel
Jens Tübke: Applied Electrochemistry, Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer Straße 7, 76327 Pfinztal, Germany
Karsten Pinkwart: Applied Electrochemistry, Fraunhofer Institute for Chemical Technology ICT, Joseph-von-Fraunhofer Straße 7, 76327 Pfinztal, Germany

Energies, 2021, vol. 14, issue 16, 1-12

Abstract: Hydrogen bromine redox flow batteries (RFB) are considered to be one of the most promising storage alternatives, as this technology offers both high energy and high-power density. In this work a printed circuit board type of segmented current collector for the measurement of locally resolved current density was developed. This analytical tool was inserted as hydrogen anode current collector in a hydrogen-bromine test cell. Charging and discharging operation was monitored under different stoichiometric flow conditions and the impact on current distribution is presented. This technique offers the possibility to prove cell limiting conditions with spatial resolution, improving our understanding and determining optimal operating conditions for a given design.

Keywords: bromine; redox flow battery; segmented electrode; current density distribution (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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