4.7 Article

An iron-based thin film as a highly efficient catalyst for electrochemical water oxidation in a carbonate electrolyte

Journal

CHEMICAL COMMUNICATIONS
Volume 52, Issue 33, Pages 5753-5756

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cc00766j

Keywords

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Funding

  1. National Natural Science Foundation of China [21476043, 21120102036, 21361130020]
  2. National Basic Research Program of China (973 program) [2014CB239402]
  3. Natural Science Foundation of Liaoning Province [2014020010]
  4. Swedish Energy Agency
  5. K & A Wallenberg Foundation

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A highly active iron-based water-oxidation catalyst was electro-deposited from a CO2 saturated bicarbonate solution containing Fe2+. This catalyst (Fe-Ci) produces a current density of 10 mA cm(-2) at an overpotential of 560 mV and the activity remains constant over 18 h in the environmentally benign HCO3-/CO32- buffer (pH 9.75). A Tafel slope of 34 mV dec(-1) was obtained for Fe-Ci, which is lower than other reported values for iron-based catalysts.

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