Negative electrode contacting silicon oxide active material layers for lithium secondary battery and method for producing the same

A negative electrode for a lithium secondary battery, comprising:

• a current collector having a plurality of bumps on a surface thereof;
• a first active material layer formed on the current collector;
• and
• a second active material layer being formed on the first active material layer and including a plurality of active material particles, wherein:
• each of the plurality of active material particles is located on a corresponding bump of the current collector,
• the first active material layer has a chemical composition represented as SiOx, where 0.1≦x<1, and the plurality of active material particles have a chemical composition represented as SiOy, where 0<y<1,
• an area of contact between the current collector and the first active material layer is larger than an area of contact between the plurality of active material particles and the first active material layer, and
• the plurality of active material particles are arranged with spaces therebetween and do not contact with each other.