Patent ID: 7241533
Filing Date: 2007-07-10
Classification: H01M,Y02E,Y02P

Abstract:
1. An electrode for a rechargeable lithium battery which includes a plate-form current collector having opposite faces and a first thin film of active material capable of lithium storage and release deposited on a first of said opposite faces of the current collector and a second thin film of the same active material as the first thin film deposited on a second of said opposite faces of the current collector, characterized in that: a constituent of said current collector is diffused into each thin film of active material, each thin film of active material has irregularities on its surface and is divided into columns by gaps formed therein, wherein said gaps extend in a thickness direction of each thin film from valleys of the irregularities on each thin film surface toward the current collector, said irregularities on the surface of each thin film conform in shape to irregularities on each face of the current collector, and said columns are at their bottoms adhered to the current collector.