Negative electrode for lithium secondary battery and lithium secondary battery comprising same

The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery comprising the same, and provides a negative electrode for a secondary battery and a lithium secondary battery comprising the same, the negative electrode comprising: a negative electrode current collector; a first negative electrode mixture layer on at least one surface of the negative electrode current collector and including a first silicon-based negative electrode active material; the second negative electrode mixture layer is located on the first negative electrode mixture layer and comprises a second silicon-based negative electrode active material, and the second silicon-based negative electrode active material is SiOx (0 < = xlt; 2). 本发明涉及一种锂二次电池用负极及包括该负极的锂二次电池，并且提供一种二次电池用负极及包括所述负极的锂二次电池，所述负极包括：负极集流体；第一负极混合物层，其位于所述负极集流体的至少一面上并包含第一硅基负极活性物质；以及第二负极混合物层，其位于所述第一负极混合物层上并包含第二硅基负极活性物质，其中，第二硅基负极活性物质为掺杂有碱金属或碱土金属的SiOx(0≤x