NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

• Main Authors: JEONG, Min-Young, LEE, Taeil, BAE, Juhye, AHN, Won-Gi
• Format: Patent
• Language: English; French; German
• Published: 15.02.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Disclosed are a negative electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode for a rechargeable lithium battery includes a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a first region in contact with the current collector and including a first negative electrode active material, and a second region disposed on the first region and including a second negative electrode active material, each of the first negative electrode active material and second negative electrode active material has an average particle diameter (D50) of 9 µm to 22 µm, morphologies of the first negative electrode active material and the second negative electrode active material are different from each other, a porosity of the second region is higher than that of the first region, and a ratio of the porosity of the second region to the porosity of the first region ranges from 110% to 190%.