Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium

Electrochemical mechanisms of molten salt electrolysis from TiO(2) to titanium were investigated by Potentiostatic electrolysis, cyclic voltammetry, and square wave voltammetry in NaCl-CaCl(2) at 800 °C. The composition and morphology of the product obtained at different electrolysis times were char...

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Autores principales: Meng, Xianghai, Zhao, Hongmei, Bi, Sheng, Ju, Zilai, Yang, Zhenming, Yang, Yu, Li, Hui, Liang, Jinglong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182213/
https://www.ncbi.nlm.nih.gov/pubmed/35683254
http://dx.doi.org/10.3390/ma15113956
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author Meng, Xianghai
Zhao, Hongmei
Bi, Sheng
Ju, Zilai
Yang, Zhenming
Yang, Yu
Li, Hui
Liang, Jinglong
author_facet Meng, Xianghai
Zhao, Hongmei
Bi, Sheng
Ju, Zilai
Yang, Zhenming
Yang, Yu
Li, Hui
Liang, Jinglong
author_sort Meng, Xianghai
collection PubMed
description Electrochemical mechanisms of molten salt electrolysis from TiO(2) to titanium were investigated by Potentiostatic electrolysis, cyclic voltammetry, and square wave voltammetry in NaCl-CaCl(2) at 800 °C. The composition and morphology of the product obtained at different electrolysis times were characterized by XRD and SEM. CaTiO(3) phase was found in the TiO(2) electrochemical reduction process. Electrochemical reduction of TiO(2) to titanium is a four-step reduction process, which can be summarized as TiO(2)→Ti(4)O(7)→Ti(2)O(3)→TiO→Ti. Spontaneous and electrochemical reactions take place simultaneously in the reduction process. The electrochemical reduction of TiO(2)→Ti(4)O(7)→Ti(2)O(3)→TiO affected by diffusion was irreversible.
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spelling pubmed-91822132022-06-10 Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium Meng, Xianghai Zhao, Hongmei Bi, Sheng Ju, Zilai Yang, Zhenming Yang, Yu Li, Hui Liang, Jinglong Materials (Basel) Article Electrochemical mechanisms of molten salt electrolysis from TiO(2) to titanium were investigated by Potentiostatic electrolysis, cyclic voltammetry, and square wave voltammetry in NaCl-CaCl(2) at 800 °C. The composition and morphology of the product obtained at different electrolysis times were characterized by XRD and SEM. CaTiO(3) phase was found in the TiO(2) electrochemical reduction process. Electrochemical reduction of TiO(2) to titanium is a four-step reduction process, which can be summarized as TiO(2)→Ti(4)O(7)→Ti(2)O(3)→TiO→Ti. Spontaneous and electrochemical reactions take place simultaneously in the reduction process. The electrochemical reduction of TiO(2)→Ti(4)O(7)→Ti(2)O(3)→TiO affected by diffusion was irreversible. MDPI 2022-06-02 /pmc/articles/PMC9182213/ /pubmed/35683254 http://dx.doi.org/10.3390/ma15113956 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Meng, Xianghai
Zhao, Hongmei
Bi, Sheng
Ju, Zilai
Yang, Zhenming
Yang, Yu
Li, Hui
Liang, Jinglong
Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium
title Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium
title_full Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium
title_fullStr Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium
title_full_unstemmed Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium
title_short Electrochemical Mechanism of Molten Salt Electrolysis from TiO(2) to Titanium
title_sort electrochemical mechanism of molten salt electrolysis from tio(2) to titanium
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182213/
https://www.ncbi.nlm.nih.gov/pubmed/35683254
http://dx.doi.org/10.3390/ma15113956
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