MICROCRYSTALLINE NANOSCALED SILICON PARTICLES AND USE THEREOF AS ACTIVE ANODE MATERIAL IN SECONDARY LITHIUM ION BATTERIES
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May 16, 2024
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Mar 25, 2022
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Mar 26, 2021
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Abstract
The present invention concerns a method for manufacturing microcrystalline nanoscaled silicon particles, the particles made thereof, and a secondary electrochemical cell utilising the particles as the active material of the negative electrode of the secondary electrochemical cell, wherein the silicon particles comprises a chemical compound of formula: Si(1−x)Mx, where 0.005≤x≤0.20 and M is at least one substitution element chosen from; C, N, or a mixture thereof, and wherein the particles have been subject to a heat treatment of 800 to 900° C. and transformed into a microcrystalline phase having crystallite sizes in the range of 1 to 15 nm.
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