Electrochemical Activity of a La0.9Ca0.1Co1−xFe xO3 Catalyst for a Zinc Air Battery Electrode

الملخص EN

The optimum composition of cathode catalyst has been studied for rechargeable zinc air battery application.

La0.9Ca0.1Co1−xFe xO3 ( x = 0 – 0.4 ) perovskite powders were prepared using the citrate method.

The substitution ratio of Co2+ with Fe3+ cations was controlled in the range of 0–0.4.

The optimum substitution ratio of Fe3+ cations was determined by electrochemical measurement of the air cathode composed of the catalyst, polytetrafluoroethylene (PTFE) binder, and Vulcan XC-72 carbon.

The substitution by Fe enhanced the electrochemical performances of the catalysts.

Considering oxygen reduction/evolution reactions and cyclability, we achieved optimum substitution level of x = 0.1 in La0.9Ca0.1Co1−xFe xO3.