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High Voltage Redox-Meditated Flow Batteries with Prussian Blue Solid Booster

Author

Listed:
  • John Ostrander

    (Department of Chemistry–Ångström Laboratory, Uppsala University, Box 538, 75121 Uppsala, Sweden)

  • Reza Younesi

    (Department of Chemistry–Ångström Laboratory, Uppsala University, Box 538, 75121 Uppsala, Sweden)

  • Ronnie Mogensen

    (Department of Chemistry–Ångström Laboratory, Uppsala University, Box 538, 75121 Uppsala, Sweden)

Abstract

This work presents Prussian blue solid boosters for use in high voltage redox-mediated flow batteries (RMFB) based on non-aqueous electrolytes. The system consisted of sodium iodide as a redox mediator in an acetonitrile catholyte containing solid Prussian blue powder. The combination enabled the solid booster utilization in the proposed systems to reach as high as 66 mAh g −1 for hydrated Prussian blue and 110 mAh g −1 for anhydrous rhombohedral Prussian blue in cells with an average potential of about 3 V (vs. Na + /Na). Though the boosted system suffers from capacity fading, it opens up possibilities to develop non-aqueous RMFB with low-cost materials.

Suggested Citation

  • John Ostrander & Reza Younesi & Ronnie Mogensen, 2021. "High Voltage Redox-Meditated Flow Batteries with Prussian Blue Solid Booster," Energies, MDPI, vol. 14(22), pages 1-9, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7498-:d:675703
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