采用三电极体系对La3+离子在0.01 mol/L LaCl3-0.1 mol/L LiCl-EMIMBF4离子液体电化学还原制备金属镧的电极过程进行了研究.循环伏安法结合恒电位电解法研究结果表明:La3+离子的电化学还原是不可逆过程,还原步骤为一次完成La3++3e→La.计时电流法结合恒电位电解法研究表明:La3+离子的还原过程受到扩散控制,传递系数和扩散系数分别为0.0492和(1.07～1.19)×10-6 cm2/s.
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