摘要：【中文】本发明涉及一种负极活性材料，所述负极活性材料包含：碳质基质，所述碳质基质包含第一粒子和第二粒子，其中所述第一粒子包含：硅核；氧化物层，所述氧化物层设置在所述硅核上并且包含SiO_x(0<x≤2)；和涂层，所述涂层覆盖所述氧化物层的表面的至少一部分并且包含LiF，并且所述第二粒子是鳞片状石墨。 【EN】The present invention relates to an anode active material comprising: a carbonaceous substrate comprising first particles and second particles, wherein the first particles comprise: a silicon nucleus; an oxide layer disposed on the silicon core and comprising SiO_x(0<x is less than or equal to 2); and a coating covering at least a portion of a surface of the oxide layer and comprising LiF, and the second particles are flake graphite.