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

Authors

Shao-hua YANG, School of Metallurgy and Chemical Engineering, JiangXi University of Science and Technology, Ganzhou, 341000, Jiangxi, China;
Jun WANG, School of Metallurgy and Chemical Engineering, JiangXi University of Science and Technology, Ganzhou, 341000, Jiangxi, China;Follow
Xiao-hui LAI, School of Metallurgy and Chemical Engineering, JiangXi University of Science and Technology, Ganzhou, 341000, Jiangxi, China;
Hao-ran WANG, School of Metallurgy and Chemical Engineering, JiangXi University of Science and Technology, Ganzhou, 341000, Jiangxi, China;

Corresponding Author

Jun WANG(1556390714@qq.com)

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.

Graphical Abstract

Keywords

molten salt, cathode process, electrochemical, diffusion control

DOI Link

https://doi.org/10.13208/j.electrochem.150918

Publication Date

2016-06-28

Online Available Date

2015-11-19

Revised Date

2015-10-11

Received Date

2015-09-21

Recommended Citation

Shao-hua YANG, Jun WANG, Xiao-hui LAI, Hao-ran WANG. The Electrochemical Behavior of Li+ in LiF-BaF₂-LiCl Molten Salt System[J]. Journal of Electrochemistry, 2016 , 22(3): 306-310.
DOI: 10.13208/j.electrochem.150918
Available at: https://jelectrochem.xmu.edu.cn/journal/vol22/iss3/10