▎ 摘 要
NOVELTY - Negative electrode for a lithium-ion secondary battery comprises a negative electrode current collector and a negative electrode active material layer comprising a negative electrode active material on at least one surface of the negative electrode current collector. The negative electrode active material layer comprises a lower layer facing the surface of the current collector and an upper layer arranged on the lower layer. The lower layer comprises graphite as an anode active material, and the upper layer comprises graphite and silicon oxide as an anode active material. The silicon oxide has a sphericity of 0.4-0.8 and the negative electrode comprises a linear conductive material. USE - As negative electrode for a lithium-ion secondary battery. ADVANTAGE - The negative electrode has an effect of improving lifetime characteristics and rapid charging characteristics of a battery.