Liangxing Li, Jinzhao Guan
Al-Si alloy, a precursor of solar grade silicon, was prepared by direct electrolysis in cryolite molten salt at 950 °C using high purity silica as material, liquid aluminum as the cathode and high purity graphite as the anode. The electrochemical behavior of Si(IV) was investigated using cyclic voltammetry method. The electrolysis products were characterized by XRD, SEM/EDS and ICP. The results indicate that the reduction process of Si(IV) on tungsten electrode is a two-step process and there is about 0.6 V gap between the two steps. The contents of boron and phosphorus in the aluminum-silicon alloy are 3 ppm and 8 ppb, which will make the directional solidification function effectively and reduce the cost of preparation solar grade silicon from metallurgical grade silicon.
@article{7b73f2ab-9dec-480e-8d3b-bf53e59db806,
title={Preparation of Solar Grade Silicon Precu},
author={Liangxing Li and Jinzhao Guan},
year={2026},
language={en}
}TY - JOUR TI - Preparation of Solar Grade Silicon Precu AU - Liangxing Li AU - Jinzhao Guan PY - 2026 LA - en ER -
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