PREDOMINANTLY AMORPHOUS SILICON PARTICLES AND USE THEREOF AS ACTIVE ANODE MATERIAL IN SECONDARY LITHIUM ION BATTERIES
A method for manufacturing predominantly amorphous silicon-containing particles includes a chemical compound of formula: Si(1−x)Cx, where 0.005≤x<0.05. The particles, when subjected to XRD analysis applying unmonochromated CuKα radiation, exhibit one peak at around 28° and one peak at around 52°....
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
23.03.2023
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Subjects | |
Online Access | Get full text |
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Summary: | A method for manufacturing predominantly amorphous silicon-containing particles includes a chemical compound of formula: Si(1−x)Cx, where 0.005≤x<0.05. The particles, when subjected to XRD analysis applying unmonochromated CuKα radiation, exhibit one peak at around 28° and one peak at around 52°. Both peaks have a Full Width at Half Maximum of at least 5° when using Gaussian peak fitting. The method includes forming a homogeneous gas mixture of a first precursor gas of a silicon containing compound and at least one second precursor gas of a substitution element M containing compound, injecting the homogeneous gas mixture of the first and second precursor gases into a reactor space where the precursor gases are heated to a temperature in the range of from 700 to 900° C. so that the precursor gases react and form particles, and collecting and cooling the particles to a temperature in the range of from ambient temperature up to about 350° C. The relative amounts of the first and the second precursor gases are adapted such that the formed particles obtain an atomic ratio C: Si in the range of [0.005, 0.05). |
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Bibliography: | Application Number: US202117760281 |