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Title: Impact of membrane characteristics on the performance and cycling of the Br₂–H₂ redox flow cell

Abstract

The Br₂/H₂ redox flow cell shows promise as a high-power, low-cost energy storage device. In this paper, the effect of various aspects of material selection and processing of proton exchange membranes on the operation of the Br₂/H₂ redox flow cell is determined. Membrane properties have a significant impact on the performance and efficiency of the system. In particular, there is a tradeoff between conductivity and crossover, where conductivity limits system efficiency at high current density and crossover limits efficiency at low current density. The impact of thickness, pretreatment procedure, swelling state during cell assembly, equivalent weight, membrane reinforcement, and addition of a microporous separator layer on this tradeoff is assessed. NR212 (50 μm) pretreated by soaking in 70 °C water is found to be optimal for the studied operating conditions. For this case, an energy efficiency of greater than 75% is achieved for current density up to 400 mA cm⁻², with a maximum obtainable energy efficiency of 88%. A cell with this membrane was cycled continuously for 3164 h. Membrane transport properties, including conductivity and bromine and water crossover, were found to decrease moderately upon cycling but remained higher than those for the as-received membrane.

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. TVN Systems, Inc., Lawrence, KS (United States)
Publication Date:
Research Org.:
TVN Systems, Inc., Lawrence, KS (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1172891
Alternate Identifier(s):
OSTI ID: 1360982
Grant/Contract Number:  
AR0000262
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 284; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Bromine; Redox flow cell; Redox flow battery; Nafion; Membrane; Energy storage efficiency

Citation Formats

Tucker, Michael C., Cho, Kyu Taek, Spingler, Franz B., Weber, Adam Z., and Lin, Guangyu. Impact of membrane characteristics on the performance and cycling of the Br₂–H₂ redox flow cell. United States: N. p., 2015. Web. doi:10.1016/j.jpowsour.2015.03.010.
Tucker, Michael C., Cho, Kyu Taek, Spingler, Franz B., Weber, Adam Z., & Lin, Guangyu. Impact of membrane characteristics on the performance and cycling of the Br₂–H₂ redox flow cell. United States. https://doi.org/10.1016/j.jpowsour.2015.03.010
Tucker, Michael C., Cho, Kyu Taek, Spingler, Franz B., Weber, Adam Z., and Lin, Guangyu. Wed . "Impact of membrane characteristics on the performance and cycling of the Br₂–H₂ redox flow cell". United States. https://doi.org/10.1016/j.jpowsour.2015.03.010. https://www.osti.gov/servlets/purl/1172891.
@article{osti_1172891,
title = {Impact of membrane characteristics on the performance and cycling of the Br₂–H₂ redox flow cell},
author = {Tucker, Michael C. and Cho, Kyu Taek and Spingler, Franz B. and Weber, Adam Z. and Lin, Guangyu},
abstractNote = {The Br₂/H₂ redox flow cell shows promise as a high-power, low-cost energy storage device. In this paper, the effect of various aspects of material selection and processing of proton exchange membranes on the operation of the Br₂/H₂ redox flow cell is determined. Membrane properties have a significant impact on the performance and efficiency of the system. In particular, there is a tradeoff between conductivity and crossover, where conductivity limits system efficiency at high current density and crossover limits efficiency at low current density. The impact of thickness, pretreatment procedure, swelling state during cell assembly, equivalent weight, membrane reinforcement, and addition of a microporous separator layer on this tradeoff is assessed. NR212 (50 μm) pretreated by soaking in 70 °C water is found to be optimal for the studied operating conditions. For this case, an energy efficiency of greater than 75% is achieved for current density up to 400 mA cm⁻², with a maximum obtainable energy efficiency of 88%. A cell with this membrane was cycled continuously for 3164 h. Membrane transport properties, including conductivity and bromine and water crossover, were found to decrease moderately upon cycling but remained higher than those for the as-received membrane.},
doi = {10.1016/j.jpowsour.2015.03.010},
journal = {Journal of Power Sources},
number = ,
volume = 284,
place = {United States},
year = {Wed Mar 04 00:00:00 EST 2015},
month = {Wed Mar 04 00:00:00 EST 2015}
}

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Works referencing / citing this record:

A Review of Hydrogen/Halogen Flow Cells
journal, May 2016

  • Cho, Kyu Taek; Tucker, Michael C.; Weber, Adam Z.
  • Energy Technology, Vol. 4, Issue 6
  • DOI: 10.1002/ente.201500449

Energy storage inspired by nature – ionic liquid iron–sulfur clusters as electrolytes for redox flow batteries
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Hydrogen-bromate flow battery: can one reach both high bromate utilization and specific power?
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