The diffusion dynamic of Ti in liquid cathodes during molten oxide electrolysis

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-01-16 DOI:10.1016/j.scriptamat.2025.116548

Shijie Li , Yang Gao , Wei Wang , Donghua Tian , Zhenghao Pu , Handong Jiao , Shuqiang Jiao

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Abstract

Molten oxide electrolysis (MOE) equipped with a liquid cathode is a prospective and sustainable process to reduce carbon footprint of metallurgical industry. However, the ultrahigh operating temperature significantly impedes the in-depth investigation of the cathodic process, which further limits the large-scale application of MOE. Here, we conduct a series of equivalent diffusion experiments of Ti in liquid Cu and Sn at operating temperature of up to 1673 K. The time-dependent snapshots of Ti atom distribution visually and quantitatively demonstrated the diffusion behaviour of Ti in those liquid cathodes for the first time. In addition, the diffusion coefficient and limiting current density of Ti in liquid Cu and Sn are obtained by integrating the experimental results, thermodynamic calculations, and computer simulations. Based on those new findings, the potential application of Cu and Sn cathodes in MOE was re-evaluated. Collectively, this study presents valuable insights for the industrial application of MOE.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.