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Study of influences on the direct electrolysis of silica in molten salt: particle size, temperature, time and voltage
- Source :
- Journal of Electrochemical Energy Conversion and Storage; 20220101, Issue: Preprints p1-11, 11p
- Publication Year :
- 2022
-
Abstract
- In this study, molten-salt electrolysis of silica was investigated to identify the role played by electrolytic conditions on the deoxidization depth. Four key conditions that included particle size, electrolytic temperature, working time, and cell voltage were systematically compared using the X-ray diffraction, scanning electron microscopy (SEM), field-emission SEM, transmission electron microscopy, and X-ray photoelectron spectroscopy analyses. The results suggest that prolonging the. Cell voltage is another key factor that determines the reduction process. On the basis of the given current conditions, the order of effect on the experiment is working time, cell voltage, electrolytic temperature, and particle size. The obtained specimen under optimized condition is Si and Fe–Si alloy composite with silicon porous nanosphere and Fe–Si nanoparticles in a structure that is prepared using 100-nm SiO2 nanosphere as a raw material at 800°C for 5 h at a cell voltage of 2.6–2.8 V. The present research provides a promising guidance for practical application using the method of molten-salt electrolysis.
Details
- Language :
- English
- ISSN :
- 23816872 and 23816910
- Issue :
- Preprints
- Database :
- Supplemental Index
- Journal :
- Journal of Electrochemical Energy Conversion and Storage
- Publication Type :
- Periodical
- Accession number :
- ejs60322512
- Full Text :
- https://doi.org/10.1115/1.4054954