Purifying Metallurgical-Grade Silicon to 4N with 3D Porous Structure by Integrated Metallurgy-Materials Phase Separation

Jian Song,Yifan Liu,Shixiong Mei,Ben Xiang,Jijiang Fu,Siguang Guo,Weili An,Xuming Zhang,Biao Gao,Paul K Chu,Kaifu Huo

Chemical Engineering Journal（2023）

引用 3|浏览9

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摘要

•A phase separation method consisting of alloying, nitriding, and etching is described.•Metallic impurities such as Ca, Fe, and Al and non-metallic impurities such as B and P are removed with high efficiency.•This simple, economical, and environmentally green process is conducted at a low temperature.•The process achieves purification and nanostructure formation simultaneously.

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关键词

Silicon,Purification,Phase separation,Porous structure,Metallurgy-material integration

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