Patent ID: 7485395

Claim:
A negative active material of a rechargeable lithium battery comprising: a crystalline carbon core having an intensity ratio Ra I(1360)/I(1580) of a Raman Spectroscopy peak intensity I(1360) at a (1360) plane to a Raman Spectroscopy peak intensity I(1580) at a (1580) plane of substantially 0.01 to 0.45; and a shell with a turbostratic or half-onion ring structure coated on the core, the shell consisting essentially of crystalline carbon micro-particles and semi-crystalline carbon, the shell having an intensity ratio Ra I(1360)/I(1580) of a Raman Spectroscopy peak intensity I(1360) at a (1360) plane to a Raman Spectroscopy peak intensity I(1580) at a (1580) plane of substantially 0.46 to 1.5.