Journal of Applied Electrochemistry

, Volume 45, Issue 1, pp 11–19

Optimization of electrode characteristics for the Br2/H2 redox flow cell

  • Michael C. Tucker
  • Kyu Taek Cho
  • Adam Z. Weber
  • Guangyu Lin
  • Trung Van Nguyen
Research Article
Part of the following topical collections:
  1. Batteries


The Br2/H2 redox flow cell shows promise as a high-power, low-cost energy storage device. The effect of various aspects of material selection, processing, and assembly of electrodes on the operation, performance, and efficiency of the system is determined. In particular, (+) electrode thickness, cell compression, hydrogen pressure, and (−) electrode architecture are investigated. Increasing hydrogen pressure and depositing the (−) catalyst layer on the membrane instead of on the carbon paper backing layers have a large positive impact on performance, enabling a limiting current density above 2 A cm−2 and a peak power density of 1.4 W cm−2. Maximum energy efficiency of 79 % is achieved. In addition, the root cause of limiting-current behavior in this system is elucidated, where it is found that Br reversibly adsorbs at the Pt (−) electrode for potentials exceeding a critical value, and the extent of Br coverage is potential-dependent. This phenomenon limits maximum cell current density and must be addressed in system modeling and design. These findings are expected to lower system cost and enable higher efficiency.


Redox flow cell Bromine Flow battery Hydrogen bromine 


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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Michael C. Tucker
    • 1
  • Kyu Taek Cho
    • 4
  • Adam Z. Weber
    • 1
  • Guangyu Lin
    • 2
  • Trung Van Nguyen
    • 3
  1. 1.Environmental Energy Technologies DivisionLawrence Berkeley National LaboratoryBerkeleyUSA
  2. 2.TVN Systems, Inc.LawrenceUSA
  3. 3.Chemical and Petroleum EngineeringUniversity of KansasLawrenceUSA
  4. 4.Department of Mechanical EngineeringNorthern Illinois UniversityDeKalbUSA

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