Journal of Applied Electrochemistry

, Volume 11, Issue 2, pp 209–215 | Cite as

An integrated electrochemical-chemical method for the extraction of O2 from air

  • A. C. C. Tseung
  • S. M. Jasem


Oxygen can be extracted from ambient air by using a platinum cathode to reduce oxygen and by simultaneously evolving oxygen on a platinum anode. This leads to lower power consumption than when electrolyzing water to produce oxygen. A novel, integrated electrochemical-chemical method is described in this paper. The system consists of a Teflon-bonded graphite cathode which reduces oxygen via a two-electron process with the formation of HO 2 intermediate. By placing a NiCo2O4-covered nickel screen in the anode compartment, HO 2 is chemically decomposed to yield O2; a separate Teflon-bonded NiCo2O4 anode evolves O2 electrolytically. At 40° C and in 5 M KOH, the power consumption of this device is only 2.69 kWhr−1 of O2, significantly lower than conventional electrochemical oxygen extractors (4.38 kWhl−1O2).


Oxygen Physical Chemistry Nickel Graphite Platinum 
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Copyright information

© Chapman and Hall Ltd 1981

Authors and Affiliations

  • A. C. C. Tseung
    • 1
  • S. M. Jasem
    • 1
  1. 1.Department of ChemistryThe City UniversityLondonUK

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