Reação de geração de oxigênio em eletrodos de Mn2O3 suportados em aço inoxidável

Química Nova

Hamilton Varela²  Giuseppe A. Câmara²  Hélio Scatena Júnior²  Ernesto R. Gonzalez¹ 

[1] ,Universidade Federal do Rio Grande do Norte Departamento de Química Natal RN

关键词: oxygen evolution;    ceramic electrodes;    electrocatalysis;   

DOI  :  10.1590/S0100-40422000000600002

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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