Negative Electrode for Secondary Battery, and Secondary Battery Including Same

• Main Authors: Jang, Hyun Joong, Chung, Da Bin, Jeong, Kwang Ho
• Format: Patent
• Language: English
• Published: 05.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A negative electrode for a secondary battery includes: a current collector; a first electrode negative active material layer formed on the current collector and containing a first active material; and a second negative electrode active material layer formed on the first negative electrode active material layer and containing a second active material. The second active material is a bimodal active material including active materials having different specific surface areas, a specific surface area (B2) of the second active material is larger than a specific surface area (B1) of the first active material, and the specific surface area of the second active material is an average specific surface area of an active material (2-1-th active material) having a large specific surface area and an active material (2-2-th active material) having a small specific surface area.