2007-165061 is referenced by 15 patents.
PROBLEM TO BE SOLVED: To provide an electrode structure for a lithium secondary battery having a high capacity and a long lifetime; and to provide a lithium secondary battery using the electrode structure and having the high capacity, high energy density, and the long lifetime.SOLUTION: The electrode structure for the lithium secondary battery includes a main active material layer formed from a metal powder selected from silicon, tin and an alloy thereof that can store and discharge and capable of lithium by electrochemical reaction, and a binder of an organic polymer; and an electrode structure comprising a current collector. The main active material layer is formed at least by a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder. The powder of the support material is a particle having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more materials selected from a group consisting of graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder.