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A split pH direct liquid fuel cell powered by propanol or glycerol

Author

Listed:
  • Chino, Isabel
  • Hendrix, Kimberly
  • Keramati, Abtin
  • Muneeb, Omar
  • Haan, John L.

Abstract

A split pH fuel cell was constructed using an alkaline fuel stream containing NaOH and an alcohol fuel (glycerol, 1-propanol, or 2-propanol) with an acidic oxidant stream containing H2SO4 and 3% H2O2; the electrodes were Pd black anode and Pt black or carbon black cathode separated by a cation exchange membrane with Na+ substituted for H+. The split pH environment improves the thermodynamics of the fuel cell by creating a large potential difference between electrodes, and it provides improved kinetics by lowering the pH of the anode to optimum conditions for alcohol oxidation. When the fuel cell was constructed with a carbon black cathode, significant performance was observed, with maximum power density as high as 115 mW cm−2 for 1-propanol, 105 for glycerol, and 101 for 2-propanol. When the cathode was constructed with Pt black, the power densities increased as high as 275 mW cm−2 for glycerol, 241 for 1-propanol, and 228 for 2-propanol. This performance with Pt is the highest to our knowledge for these fuels in the open literature.

Suggested Citation

  • Chino, Isabel & Hendrix, Kimberly & Keramati, Abtin & Muneeb, Omar & Haan, John L., 2019. "A split pH direct liquid fuel cell powered by propanol or glycerol," Applied Energy, Elsevier, vol. 251(C), pages 1-1.
    • Handle: RePEc:eee:appene:v:251:y:2019:i:c:94
    DOI: 10.1016/j.apenergy.2019.113323
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    References listed on IDEAS

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    1. Benipal, Neeva & Qi, Ji & Gentile, Jacob C. & Li, Wenzhen, 2017. "Direct glycerol fuel cell with polytetrafluoroethylene (PTFE) thin film separator," Renewable Energy, Elsevier, vol. 105(C), pages 647-655.
    2. Muneeb, Omar & Do, Emily & Boyd, Desiree & Perez, Josh & Haan, John L., 2019. "PdCu/C anode catalysts for the alkaline ascorbate fuel cell," Applied Energy, Elsevier, vol. 235(C), pages 473-479.
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    Cited by:

    1. Chino, Isabel & Vega, Lorenzo & Keramati, Abtin & Hendrix, Kimberly & Haan, John L., 2020. "A direct liquid fuel cell powered by 1,3- or 1,2-propanediol," Applied Energy, Elsevier, vol. 262(C).

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