Reação de geração de oxigênio em eletrodos de Mn2O3 suportados em aço inoxidável Oxygen evolution reaction on Mn2O3 electrodes supported on stainless steel

Autor: Hamilton Varela, Giuseppe A. Câmara, Hélio Scatena Júnior, Ernesto R. Gonzalez
Jazyk: English<br />Spanish; Castilian<br />Portuguese
Rok vydání: 2000
Předmět:
Zdroj: Química Nova, Vol 23, Iss 6, Pp 721-726 (2000)
Druh dokumentu: article
ISSN: 0100-4042
1678-7064
DOI: 10.1590/S0100-40422000000600002
Popis: A study of the kinetics of oxygen evolution in alkaline conditions from ceramic films of Mn2O3 supported on stainless steel was carried out. This study has been done through the determination of transfer coefficients, Tafel slopes and exchange currents using potentiodynamic and quasi-potentiostatic measurements. The activation energy was determined as a function of the overpotential and, additionally, the electrode active surface was estimated. The results are consistent with data already published for other electrodes, implying that the methods used in this work were reliable and precise.
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