Patent ID: 6027833
Filing Date: 2000-02-22
Classification: H01M,Y02E,Y02T

Abstract:
A nonaqueous secondary cell comprising:at least one pair of electrodes; anda separator provided between the at least one pair of electrodes; wherein said separator is impregnated with a nonaqueous electrolyte comprising a mixed solvent of propylene carbonate and ethylene carbonate, and wherein at least one electrode of the at least one pair of electrodes has, at least on surfaces thereof, an active substance layer comprising:composite carbon particles, which individually comprise a core of crystalline carbon and a low crystallinity or amorphous carbon layer formed on at least a part of the surface of the core; anda carbon matrix covering at least a part of the composite carbon particles, uniformly dispersing and holding the composite carbon particles therein, said carbon matrix comprising a carbonized product of a resin integrally combining carbon particles therewith.