The electrode process of La(Ⅲ) at Mo electrode in the molten LiCl-KCl for temperatures ranging from 683 K to 773 K was studied by cyclic voltammetry and chronopotentiometry,respectively.The results showed that in the...The electrode process of La(Ⅲ) at Mo electrode in the molten LiCl-KCl for temperatures ranging from 683 K to 773 K was studied by cyclic voltammetry and chronopotentiometry,respectively.The results showed that in the molten LiCl-KCl,reduction of La(Ⅲ) occurred in a step with a global exchange of three electrons.Cyclic voltammetry studies indicated that at a sweep rate lower than 0.2 V/s,the electroreduction of La(Ⅲ) to lanthanum metal was reversible and controlled by diffusion of La(Ⅲ).However,the process b...展开更多
The electrode process of cerium（III） on the Mo electrode in eutectic LiC1-KC1 melt was investigated by electrochemical transient techniques in the temperature range of 673-783 K, respectively. These results unanimou...The electrode process of cerium（III） on the Mo electrode in eutectic LiC1-KC1 melt was investigated by electrochemical transient techniques in the temperature range of 673-783 K, respectively. These results unanimously indicated that the reduction proc- ess of cerium（III） to cerium metal was a single step exchanging three electrons which was controlled by diffusion of cerium（III）. Dif- fusion coefficients （Dce0II）） in eutectic LiC1-KC1 melt were determined by cyclic voltammetry, chronopotentiometry and square wave voltammetry. An empirical diffusion coefficient function depending on temperature was proposed： lnDce（Ⅲ）--2.129-5704/T. The formal potentials （E^θCe（Ⅲy/Ce（0） versus Ag/AgCl reference electrode） at different temperatures were obtained from chronopotentiometry, which were --2.10 V （673 K） and -2.07 V （733 K）, respectively.展开更多
基金supported by the National Basic Research Program of China (2007CB209900)
文摘The electrode process of La(Ⅲ) at Mo electrode in the molten LiCl-KCl for temperatures ranging from 683 K to 773 K was studied by cyclic voltammetry and chronopotentiometry,respectively.The results showed that in the molten LiCl-KCl,reduction of La(Ⅲ) occurred in a step with a global exchange of three electrons.Cyclic voltammetry studies indicated that at a sweep rate lower than 0.2 V/s,the electroreduction of La(Ⅲ) to lanthanum metal was reversible and controlled by diffusion of La(Ⅲ).However,the process b...
基金supported by the National Basic Research Program of China (2007CB209900)
文摘The electrode process of cerium（III） on the Mo electrode in eutectic LiC1-KC1 melt was investigated by electrochemical transient techniques in the temperature range of 673-783 K, respectively. These results unanimously indicated that the reduction proc- ess of cerium（III） to cerium metal was a single step exchanging three electrons which was controlled by diffusion of cerium（III）. Dif- fusion coefficients （Dce0II）） in eutectic LiC1-KC1 melt were determined by cyclic voltammetry, chronopotentiometry and square wave voltammetry. An empirical diffusion coefficient function depending on temperature was proposed： lnDce（Ⅲ）--2.129-5704/T. The formal potentials （E^θCe（Ⅲy/Ce（0） versus Ag/AgCl reference electrode） at different temperatures were obtained from chronopotentiometry, which were --2.10 V （673 K） and -2.07 V （733 K）, respectively.
