Models of the electroreduction of passive layers on cobalt

Journal of the Brazilian Chemical Society

Universidad Nacional de La Plata, Argentina¹  Gervasi, C.A.¹ 

关键词: Cobalt oxides;    electroreduction;    potential steps;    kinetic models;   

DOI  :  10.1590/S0103-50531997000200015

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

Potentiostatic current transient techniques were employed to study the electroreduction process of surface layers formed on polycrystalline cobalt in carbonate-bicarbonate ion-containing solutions. The dynamic system analysis performed using parametric identification procedures and non-linear fit routines demonstrated that data obtained under a wide variety of experimental conditions may be interpreted by taking into account the participation of various Co(II)/Co(III)-containing surface species. The influence of the anodizing time at the potential of oxide film formation may be discussed on the basis of the proposed electroreduction models.

【 授权许可】

Unknown