运用三电极在电化学工作站AUTOLAB以循环伏安法、计时电流法和计时电位法研究了LiF-BaF_2-LiCl熔盐体系中1203 K温度下锂在钨(W)电极上的电化学还原过程及其控制步骤.结果表明,Li~+在W电极上的还原过程是一步得电子的准可逆反应,析出电位在-1.0 V附近.阴极过程受离子的扩散步骤控制,计算得出扩散系数为4.5×10~(-6)cm~2·s~(-1). The electrochemical reduction process of lithium on tungsten (W) electrode at 1203 K in LiF-BaF_2-LiCl molten salt system was studied by using three electrodes at AUTOLAB electrochemical workstation. The cyclic voltammetry, chronoamperometry and chronopotentiometry The results show that the reduction of Li ~ + on the W electrode is a one-step quasi-reversible reaction with a potential of about -1.0 V. The cathodic process is controlled by the ion diffusion step and the diffusion coefficient is calculated to be 4.5 × 10 ~ (-6) cm ~ 2 · s ~ (-1).