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 ?m to 10.0 ?m at 80° C. to 900° C. with an oxygen-containing gas.

Abstract: A lithium-ion battery and method for cycling lithium-ion batteries. The method includes providing a lithium-ion battery comprising a cathode, an anode, a separator and an electrolyte. The anode contains pre-lithiated silicon having a degree of pre-lithiation ?1 of from 5 to 50% and the anode material is only partially lithiated during full charging of the lithium-ion battery by the lithiation capacity of silicon being utilized to a degree of lithiation ?2 of from 5 to 50% by the partial lithiation of the anode material during full charging of the lithium ion battery. The total degree of lithiation ? of the silicon is from 10 to 75%, the total degree of lithiation ? is the sum of the degree of pre-lithiation ?1 and the degree of lithiation ?2, where the figures in % are based on the maximum lithiation capacity of silicon.

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 ?m to 10.0 ?m at 80° C. to 900° C. with an oxygen-containing gas.

Abstract: The invention relates to core-shell composite particles, the core being a porous, carbon-based matrix containing silicon particles and the shell being non-porous and being obtainable by the carbonization of one or more carbon precursors, the silicon particles having average particle sizes of 1 to 15 ?m.

Abstract: The invention relates to methods for producing redispersible particles based on silicon particles and polymers, characterised in that a) mixtures containing silicon particles with average particle diameter d50 of >600 nm, one or more polymer containing functional groups selected from the group comprising carboxyl-, ester-, alkoxy-, amide-, imide- und hydroxy-groups, as well as one or more solvents are dried; and subsequently b) a thermal treatment is carried out at a temperature of 80° C. until below the decomposition temperature of the polymers.

Abstract: The invention relates to lithium-ion batteries, having anodes based on an anode material containing core-shell-composite particles, characterized in that the core of the core-shell-composite particles is a porous, carbon-based matrix containing silicon particles and the shell of the core-shell-composite particles is non-porous and obtainable through carbonization of one or more carbon precursors and the anode material of the completely charged lithium-ion battery is lithiated only in part.

Abstract: The invention relates to methods for processing electrode materials for batteries, characterized in that a) mixtures containing active material particles, one or more binders and one or more dispersion liquids are dried, whereby active material particles in the form of dispersible granulates (active material granulates) are obtained, and b) the active material particles obtained in step a) in the form of dispersible granulates are mixed with one or more solvents.