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Increasing the rate capability of batteries with electrolyte flow

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  • Kim, Sun Ung
  • Monroe, Charles W.

Abstract

A theoretical analysis is provided to describe the recently proposed ‘convection battery’, wherein electrolyte flow is driven through a battery cell to alter its efficiency and power. Concentrated-solution theory rationalizes the observation that imposition of electrolyte flow parallel to the current through a separator can reduce overpotential losses. Equations are provided that allow this overpotential reduction to be computed in terms of the flow rate, as well as physical properties of the electrolyte and separator. Model results are consistent with earlier experimental observations of alkaline convection batteries. Current-coaxial flows with relatively low rates are found to allow fine-tuned control over limiting currents. Driving electrolyte flow through traditional rechargeable battery cells could facilitate very high charge rates.

Suggested Citation

  • Kim, Sun Ung & Monroe, Charles W., 2013. "Increasing the rate capability of batteries with electrolyte flow," Applied Energy, Elsevier, vol. 103(C), pages 207-211.
    • Handle: RePEc:eee:appene:v:103:y:2013:i:c:p:207-211
    DOI: 10.1016/j.apenergy.2012.09.028
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    Cited by:

    1. Di Blasi, A. & Busaccaa, C. & Di Blasia, O. & Briguglioa, N. & Squadritoa, G. & Antonuccia, V., 2017. "Synthesis of flexible electrodes based on electrospun carbon nanofibers with Mn3O4 nanoparticles for vanadium redox flow battery application," Applied Energy, Elsevier, vol. 190(C), pages 165-171.
    2. Badrinarayanan, Rajagopalan & Tseng, King Jet & Soong, Boon Hee & Wei, Zhongbao, 2017. "Modelling and control of vanadium redox flow battery for profile based charging applications," Energy, Elsevier, vol. 141(C), pages 1479-1488.
    3. Flox, Cristina & Skoumal, Marcel & Rubio-Garcia, Javier & Andreu, Teresa & Morante, Juan Ramón, 2013. "Strategies for enhancing electrochemical activity of carbon-based electrodes for all-vanadium redox flow batteries," Applied Energy, Elsevier, vol. 109(C), pages 344-351.

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