Metal Oxide/Gold Hybrid Nanocomposites as Electrocatalysts for Alkaline Air Electrodes

AUTOR(ES)

Pasqualeti, Anielli M., Oliveira, Francisca E. R., Lima, Fabio H. B.

FONTE

J. Braz. Chem. Soc.

DATA DE PUBLICAÇÃO

2015-11

RESUMO

MnCo2O4/Au was investigated as an electrocatalyst for the oxygen reduction and evolution in alkaline media. Polarization curves showed an unprecedented activity for the oxygen reduction due to a synergistic effect between MnCo2O4 and Au, involving CoII/CoIII-MnIII/MnIV, as revealed by in situ X-ray absorption near edge structure (XANES). Additionally, results showed favorable interaction between the oxide and Au, which enhanced the activity for the oxygen evolution reaction.

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