Importance

Loading Importance Indicators...

Abstract

The present disclosure relates to a method for producing a carbon-silicon composite material powder, comprising: providing a carbon-containing precursor, which is lignin; providing at least one silicon-containing active material; melt-mixing at least said carbon-containing precursor and said silicon-containing active material(s) to a melt-mixture; providing said melt-mixture in a non-fibrous form and cooling the melt- mixture to provide an isotropic intermediate composite material; subjecting said isotropic intermediate composite material to a thermal treatment, wherein said thermal treatment comprises a carbonization step to provide a carbon-silicon composite material, and subjecting said carbon-silicon composite material to pulverization to provide said carbon-silicon composite material powder. The present disclosure also relates to a carbon-silicon composite material powder obtainable by the method, a negative electrode for a non-aqueous secondary battery, such as a lithium-ion battery, comprising the carbon-silicon composite material powder, and use of the carbon-silicon composite material powder in a negative electrode of a non-aqueous secondary battery.

Loading the Abstract Image...

First Claim