NANOSCALAR SILICON PARTICLES IN NEGATIVE ELECTRODE MATERIALS FOR USE IN LITHIUM-ION BATTERIES

摘要

The invention relates to an electrode material for lithium-ion batteries. Said material is characterised in that it contains: between 5 and 85 wt. % nanoscalar silicon particles, which have a BET surface area of between 5 and 700 m<2>/g and an average primary particle diameter of between 5 and 200 nm; between 0 and 10 wt. % conductive carbon black; between 5 and 80 wt. % graphite with an average particle diameter of between 1 mu m and 100 mu m; and between 5 and 25 wt. % binding agent, the sum of the fractions of components totalling a maximum 100 wt. %. The invention also relates to the use of the inventive electrode material for producing lithium-ion batteries and to a lithium-ion battery comprising a negative electrode, which contains the inventive electrode material.