AUTHOR=Hou Zhongmin , Wang Xiaomin , Li Jidong , Li Zhen , Wang Yiyong , Xing Hongxuan TITLE=Electrochemical Mechanism of the Preparation of High-Purity Indium by Electrodeposition JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.871420 DOI=10.3389/fchem.2022.871420 ISSN=2296-2646 ABSTRACT=
Indium is a crucial material and is widely used in high-tech industries, and electrodeposition is an efficient method to recover rare metal resources. In this work, the electrochemical behavior of In3+ was investigated by using different electrochemical methods in electrolytes containing sodium and indium sulfate. Cyclic voltammetry (CV), chronoamperometry (CA), and alternating current impedance (EIS) techniques were used to investigate the reduction reaction of In3+ and the electrocrystallization mechanism of indium in the indium sulfate system. The cyclic voltammetry results showed that the electrodeposition process is irreversible. The average charge transfer coefficient