Non-aqueous electrolyte secondary cell negative electrode material and metallic silicon power therefor
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMikio Aramata, Satoru Miyawaki, Hirofumi Fukuoka
Life of this patent
Estimating the term…
Abstract
A metallic silicon powder is prepared by effecting chemical reduction on silica stone, metallurgical refinement, and metallurgical and/or chemical purification to reduce the content of impurities. The powder is best suited as a negative electrode material for non-aqueous electrolyte secondary cells, affording better cycle performance.
Claims8
A metallic silicon powder for non-aqueous electrolyte secondary cell negative electrode material, prepared by effecting chemical reduction on silica stone, metallurgical refinement, and metallurgical and/or chemical purification to reduce the content of impurities.
Dependencies are inferred from the claim text.