Patent ID: 8673498
Filing Date: 2014-03-18
Classification: H01M,Y02E,Y02P

Abstract:
1. A nonaqueous electrolyte secondary battery comprising: a positive electrode including a conductive positive electrode current collector and a positive electrode mixture layer provided on a surface of the positive electrode current collector and containing a positive electrode active material being capable of electrochemically inserting and extracting lithium ions; a negative electrode including a conductive negative electrode current collector and a negative electrode active material layer provided on a surface of the negative electrode current collector and containing a negative electrode active material being capable of electrochemically inserting and extracting lithium ions; a porous insulation layer interposed between the positive electrode and the negative electrode; insulating members are scattered at least one of an interface between the positive electrode current collector and the positive electrode mixture layer and an interface between the negative electrode current collector and the negative electrode active material layer; and a nonaqueous electrolyte held between the positive electrode and the negative electrode, wherein: a material of the insulating members is different from components constituting the positive electrode mixture layer and the negative electrode mixture layer, and an interfacial resistance between the positive electrode including the positive electrode mixture layer and the negative electrode including the negative electrode mixture layer is 1.6 Ω·cm