Patent ID: 8974966
Filing Date: 2015-03-10
Classification: H01M,Y02E,Y02P

Abstract:
1. A negative electrode for a rechargeable battery comprising: active material layers including: metal-carbon combination active material particles including: at least one active material selected from metals, and metal oxides; and a carbonaceous active material, soft graphite particles contacting the metal-carbon combination active material particles, and a binder binding the metal-carbon combination active material particles to the soft graphite particles, all of which is disposed between two separate direct points of contact between the metal-carbon combination active material particles and the soft graphite particles which they directly contact; and a current collector on which surface the active material layers are stacked, wherein the soft graphite particles have a pellet density of 1.6˜1.9 g/cc when a pellet is formed at a press pressure of 1 ton/cm wherein the soft graphite particles occupy 30 to 70 wt % of the whole active material layers; and wherein the soft graphite particles have portions transformed by the binder, the transformed portions being directly in contact with a portion of the metal-carbon combination active material particle.