ACS Catalysis
ACS Catalysis
5 years ago

Water Oxidation Catalysis: Tuning the Electrocatalytic Properties of Amorphous Lanthanum Cobaltite through Calcium Doping

Water Oxidation Catalysis: Tuning the Electrocatalytic Properties of Amorphous Lanthanum Cobaltite through Calcium Doping
Cuijuan Zhang, Simon Trudel, Curtis P. Berlinguette, Xinyue Zhang, Katelynn Daly
The influence of calcium doping on the electrocatalytic activity of amorphous lanthanum cobaltite a-La1–yCayCoOx with respect to the oxygen evolution reaction in 0.1 M KOH is investigated. The introduction of calcium slightly decreases the activity and does not hamper the short-term stability very much. a-La0.7Ca0.3CoOx demonstrates the highest activity among the calcium-containing materials, which is ascribed to the higher concentration of Co3+ and lower film resistance as determined from ex situ X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy.

Publisher URL: http://dx.doi.org/10.1021/acscatal.7b02145

DOI: 10.1021/acscatal.7b02145

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