Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 31    No. 5    May 2021

[PDF Download]        

    

Redox behavior of indium in molten chlorides
Liang XU1,2,3, Yan-hang XIONG2, Jin-wei MENG2, Jia-bao WANG2, Zhong-sheng HUA1,2, Yong-pan TIAN2, Jing-lin YOU3, Zhuo ZHAO1,2

1. Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Ma’anshan 243032, China;
2. School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243032, China;
3. State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200444, China

Abstract:An electrochemical study on the redox behavior of indium in the eutectic LiCl-KCl system at 450 °C was carried out with the transient techniques of cyclic voltammetry and chronopotentiometry on an inert molybdenum electrode. The reduction of In(III) was found to be a two-step process involving In(III)/In(I) and In(I)/In couples at the potentials of about -0.4 and -0.8 V versus Ag/AgCl, respectively. The redox mechanism was further confirmed by the theoretical evaluation of the number of transferred electrons based on cyclic voltammetry and characterizations of the precipitates generated by the potentiostatic electrolysis. The diffusion coefficients of indium ions in the eutectic LiCl-KCl melt at 450 °C were estimated by cyclic voltammetry and chronopotentiometry. The results obtained through the two methods are in fair agreement, delivering an average diffusion coefficient of approximately 1.8×10-5 cm2/s for In(III), and 1.4×10-4 cm2/s for In(I).

 

Key words: indium ions; redox behavior; eutectic LiCl-KCl melt; end-of-life LCDs; resources recycling

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com