MICROCRYSTALLINE NANOSCALED SILICON PARTICLES AND USE THEREOF AS ACTIVE ANODE MATERIAL IN SECONDARY LITHIUM ION BATTERIES

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 silico...

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Bibliographic Details
Main Authors Filtvedt, Werner, Kirkengen, Martin, Sauar, Erik
Format Patent
LanguageEnglish
Published 16.05.2024
Subjects
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary: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.
Bibliography:Application Number: US202218552551