Modeling the Performance of a Zinc/Bromine Flow Battery

Boram Koo, Dongcheul Lee, Jaeshin Yi, Chee Burm Shin, Dong Joo Kim, Eun Mi Choi and Tae Hyuk Kang
Additional contact information
Boram Koo: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
Dongcheul Lee: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
Jaeshin Yi: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
Chee Burm Shin: Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, Suwon 16499, Korea
Dong Joo Kim: Lotte Chemical, Daejeon 34110, Korea
Eun Mi Choi: Lotte Chemical, Daejeon 34110, Korea
Tae Hyuk Kang: Lotte Chemical, Daejeon 34110, Korea

Energies, 2019, vol. 12, issue 6, 1-13

Abstract: The zinc/bromine (Zn/Br 2 ) flow battery is an attractive rechargeable system for grid-scale energy storage because of its inherent chemical simplicity, high degree of electrochemical reversibility at the electrodes, good energy density, and abundant low-cost materials. It is important to develop a mathematical model to calculate the current distributions in a Zn/Br 2 flow cell in order to predict such quantities as current, voltage, and energy efficiencies under various charge and discharge conditions. This information can be used to design both of bench and production scale cells and to select the operating conditions for optimum performance. This paper reports a modeling methodology to predict the performance of a Zn/Br 2 flow battery. The charge and discharge behaviors of a single cell is calculated based on a simple modeling approach by considering Ohm’s law and charge conservation on the electrodes based on the simplified polarization characteristics of the electrodes. An 8-cell stack performance is predicted based on an equivalent circuit model composed of the single cells and the resistances of the inlet and outlet streams of the positive and negative electrolytes. The model is validated by comparing the modeling results with the experimental measurements.

Keywords: zinc/bromine flow battery; modeling; shunt current; energy efficiency (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/6/1159/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/6/1159/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:6:p:1159-:d:217073

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().