LiF-BaF2-LiCl熔盐体系中Li+的电化学行为

doi:10.13208/j.electrochem.150918

电化学（中英文） ›› 2016, Vol. 22 ›› Issue (3): 306-310. doi: 10.13208/j.electrochem.150918

LiF-BaF₂-LiCl熔盐体系中Li⁺的电化学行为

杨少华，王君*，赖晓晖，王浩然

江西理工大学冶金与化学工程学院，江西赣州 341000

收稿日期:2015-09-21 修回日期:2015-10-11 出版日期:2016-06-28 发布日期:2015-11-19
通讯作者: 王君 E-mail:1556390714@qq.com
作者简介:王君
基金资助:
国家自然科学基金项目(No. 3203204516)资助

The Electrochemical Behavior of Li+ in LiF-BaF₂-LiCl Molten Salt System

YANG Shao-hua, WANG Jun*, LAI Xiao-hui, WANG Hao-ran

School of Metallurgy and Chemical Engineering, JiangXi University of Science and Technology, Ganzhou, 341000, Jiangxi, China

Received:2015-09-21 Revised:2015-10-11 Published:2016-06-28 Online:2015-11-19
Contact: WANG Jun E-mail:1556390714@qq.com
About author:WANG Jun

摘要/Abstract

摘要：

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-BaF₂-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 cm²•s^-1.

关键词: 熔盐, 阴极过程, 电化学, 扩散控制

Abstract:

The electrochemical reduction process and rate determining step of Li ion on a tungsten electrode at 1203 K in a LiF-BaF₂-LiCl molten system were studied by cyclic voltammetry, chronoamperometry and chronopotentiometry methods using a three-electrode system and electrochemical workstation AUTOLAB. The results showed that the reduction potential of Li ion was at around -1.0 V on a tungsten electrode as compared with a platinum electrode. The reduction process of Li ion on a tungsten electrode occurred in a single step with the exchange of one electron. Chronoamperograms indicated that the cathode process was controlled by the diffusion step of ions and the diffusion coefficient was calculated to be 4.5 × 10^-6 cm²•s^-1.

Key words: molten salt, cathode process, electrochemical, diffusion control

中图分类号:

O646

杨少华，王君，赖晓晖，王浩然. LiF-BaF₂-LiCl熔盐体系中Li⁺的电化学行为[J]. 电化学（中英文）, 2016, 22(3): 306-310.

YANG Shao-hua, WANG Jun, LAI Xiao-hui, WANG Hao-ran. The Electrochemical Behavior of Li+ in LiF-BaF₂-LiCl Molten Salt System[J]. Journal of Electrochemistry, 2016, 22(3): 306-310.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.150918

https://electrochem.xmu.edu.cn/CN/Y2016/V22/I3/306

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LiF-BaF₂-LiCl熔盐体系中Li⁺的电化学行为

The Electrochemical Behavior of Li+ in LiF-BaF₂-LiCl Molten Salt System

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