Sughrue Mion, PLLC
Negative electrode material for lithium-ion batteries including non-flaky artificial graphite including silicon-containing particles, artificial graphite particles and carbonaceous material
A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0<x≤2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 μm or more and 15.0 μm or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.
UMICORE SHOWA DENKO K. K.
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Nobuaki Arihiro Dirk Yasunari Masataka Stijn
Ishii Muto Van Genechten Otsuka Takeuchi Put