Sughrue Mion, PLLC
Negative electrode material for lithium ion batteries and use thereof
The present invention relates to a negative electrode material for a lithium ion battery, made of a composite material comprising silicon-containing particles, artificial graphite particles and a carbon coating layer, wherein the silicon-containing particles are silicon particles having a SiOx layer (0<x≤2) on a particle surface, have an oxygen content ratio of 1 mass % or more and 18 mass % or less, and mainly comprise particles having a primary particle diameter of 200 nm or less; and the artificial graphite particles have a scale-like shape. By using the negative electrode material, a lithium ion battery having a high capacitance and excellent charge-discharge cycle characteristics can be produced.
SHOWA DENKO K.K. UMICORE
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Nobuaki Masataka Hirokazu Nicolas Stijn Sam
Ishii Takeuchi Murata Marx Put Siau