ELECTROCATALYTIC BEHAVIORS OF CER ON SOME METAL OXIDES IN CHLORIDE MELT AT 700℃
来源期刊：中国有色金属学报(英文版)1999年第2期
论文作者：Xie Zhong Liu Yexiang
文章页码：378 - 382
Key words：chlorine evolution reaction, electrocatalysis, chloride melt, oxide electrode
Abstract: The polarization behaviors of various oxide electrodes prepared on graphite substrate by thermal decomposition procedure have been investigated by linear sweep voltammetry in chloride melt at 700℃.Experimental results showed that some oxides have obvious electrocatalytic activity for chlorine evolution, lowering anodic overpotential up to 80~110mV at a current density of 0.6A/cm2. The kinetic analysis of steady stateJ-Edata in terms of Tafel slopes and chronocoulumetric measuring inferred that the mechanisms of CER on RE oxide electrodes was atom+ion route, with Heyrovsky reaction (Clads+Cl-→Cl2+e) being the ratedetermining step, and the adsorption of intermediate species Cladsobeying no-activated Temkin condition.
