G. Z. Chen, D. J. Fray
This study investigates the fast, complete, and low energy electroreduction of silicon dioxide (SiO2) using a porous electrode prepared from SiO2 powder. The objective is to demonstrate a method of producing silicon without the environmental impact associated with carbon reductants. The methodology involves cyclic voltammetry experiments using tungsten and platinum electrodes within a molten CaCl2 electrolyte at 850 °C. Results indicate that the electroreduction of SiO2 can be accomplished effectively, with the reduction initiating at -0.85 V. Furthermore, experimental observations suggest the existence of an optimal thickness for the insulating solid oxide, which appears to facilitate rapid electroreduction. The findings also reveal the production of two silicon alloys through the same electrochemical method. This research provides a promising avenue for silicon production directly from solid SiO2, highlighting its potential for sustainable and environmentally friendly methods in the metallurgical field.
@article{f247de0b-0f6b-48c3-bda4-eae298ad8c9b,
title={Electrochemical Preparation of Silicon a},
author={G. Z. Chen and D. J. Fray},
year={2026},
language={en}
}TY - JOUR TI - Electrochemical Preparation of Silicon a AU - G. Z. Chen AU - D. J. Fray PY - 2026 LA - en ER -
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