Nexeon Limited

Jose Medrano Catalan

Markus Andersson

The invention relates to a process for preparing composite particles, the process comprising the steps of: (a) providing a plurality of porous particles in a pressure reactor; (b) contacting the plurality of porous particles with a silicon precursor gas at conditions effective to cause deposition of silicon in the pores of the porous particles to provide composite particles comprising a porous particle framework and elemental silicon within the pores of the porous particle framework; and (c) during step (b), withdrawing an effluent gas from the pressure reactor, wherein the silicon precursor gas is introduced into the pressure reactor continuously.

Process for the preparation of silicon-containing composite particles

The invention relates to a process for preparing composite particles, the process comprising contacting the plurality of particles in the reaction zone with a gas comprising at least 25 vol % of a silicon-containing precursor at a temperature effective to cause deposition of silicon in the pores of the porous particles. A controlled temperature differential between the maximum temperature of the internal surfaces of the reaction zone and the simultaneous minimum temperature within the plurality of porous particles is maintained during the contacting step.

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Oxford, United Kingdom

Jose Medrano Catalan