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US 11,597,656 B2Granted
Methods for modifying silicon particles
AssigneeWacker Chemie AG
InventorsDominik Jantke, Rebecca Bernhard, Peter Gigler, Jürgen Stohrer
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Abstract
The invention relates to methods for producing non-aggregated, modified silicon particles by treating non-aggregated silicon particles which have volume-weighted particle size distributions with diameter percentiles d50 of 1.0 μm to 10.0 μm at 80° C. to 900° C. with an oxygen-containing gas.
Claims19
A method for producing nonaggregated, modified silicon particles, comprising:
- treating nonaggregated reactant silicon particles having a volume-weighted particle size distribution with a diameter percentile d50 of 3.0 μm to 7.0 μm with an oxygen-containing gas at 80° C. to 900° C. and recovering nonaggregated, modified silicon particles containing 0.1-3.0% by weight of oxygen based on the total weight of the non-aggregated, modified silicon particles, with the proviso that the nonaggregated, modified silicon particles have an oxygen content which is 0.05% to 0.6% by weight greater than the oxygen content of the nonaggregated silicon particles based on the total weight of the silicon particles and have a BET surface area of 0.2 to 8.0 m2/g.
Dependencies are inferred from the claim text.