Rechargeable lithium batteries

Abstract

Disclosed is a rechargeable lithium battery, the rechargeable lithium battery including a positive electrode, a negative electrode, and an electrolyte between the positive electrode and negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer includes amorphous carbon and a negative electrode active material. In the negative electrode active material layer, from an upper portion farther from the negative electrode collector to a lower portion closer to the negative electrode collector, an amount of the negative electrode active material increases and an amount of the amorphous carbon decreases. The rechargeable lithium battery has a ratio of a discharge capacity per unit area of the negative electrode to the discharge capacity per unit area of the positive electrode of less than or equal to about 1.

Dependencies are inferred from the claim text.