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Surface Generation of a Cobalt-Derived Water Oxidation Electrocatalyst Developed in a Neutral HCO3/CO2 System

Authors

  • Khurram Saleem Joya,

    Corresponding author
    1. Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
    2. Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
    3. Department of Chemistry, University of Engineering and Technology, Lahore, Punjab, Pakistan
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  • Kazuhiro Takanabe,

    1. Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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  • Huub J. M. de Groot

    1. Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
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Abstract

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Neutral HCO3/CO2 is a new electrolyte system for in situ generation of robust and efficient Co-derived (Co-Ci) water oxidation electrocatalysts. The Co-Ci/indium tin oxide system shows a remarkable 2.0 mA cm–2 oxygen evolution current density that is sustained for several hours. 7.5 nmol of electroactive species per cm2 generates about 109 μmol of O2 at a rate of 0.51 per mol of catalyst per second.

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