摘要
研究了ＹＣｌ３ＬｉＣｌＯ４ＤＭＳＯ（ 二甲基亚砜） 体系电导率与温度的关系， 及钇在Ｐｔ 和Ｃｕ 电极上的电化学行为。结果表明， Ｙ３ ＋ 在Ｐｔ 和Ｃｕ 电极上可一步不可逆还原为Ｙ， 在铜电极上于－ ２．５００ Ｖ（ｖｓ ＳＣＥ）下恒电位电解， 可获得粘附性好、Ｙ 含量达９７．９ ％ （ 质量分数） 的均匀沉积膜。利用循环伏安法、计时电流法、计时电位法测定了Ｙ３ ＋ 离子在２９８ Ｋ 下， ＹＣｌ３ＬｉＣｌＯ４ＤＭＳＯ 溶液中的扩散系数为３．２２ ×１０ －６ｃｍ２·ｓ－１ ， 电荷传递系数为０．２２ 。
The cyclic voltammetry, chronoamperometry, chronopotentiometry and X ray diffraction were used to investigate the electrochemical behaviour of Y 3+ in YCl 3 LiClO 4 DMSO(dimethylsolfoxide) system on Pt and Cu cathodes. Experimental results indicate that the electroreduction of Y 3+ to Y is irreversible in one step. The Y was prepared by potentiostatic electrolysis on Cu electrode surface in YCl 3 LiClO 4 DMSO system. The deposits contained Y over 97% was obtained. The diffusion coefficients and electron transfer coefficient of Y 3+ in YCl 3 LiClO 4 DMSO system were determined at 298 K, and data 3 22×10 -6 cm 2·s -1 and 0 22 are obtained respectively.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1999年第3期193-197,共5页
Journal of the Chinese Society of Rare Earths
基金
广东省科学基金
关键词
稀土
钇
电沉积
二甲基亚砜
电镀
溶剂
电化学
Rare earths, Yttrium, Electrodeposition, Dimethylsulfoxide, Diffusion coefficient, Electron transfer coefficient
