Patent ID: 8399127
Filing Date: 2013-03-19
Classification: H01M,Y02E,Y02P

Abstract:
1. A nonaqueous electrolyte secondary battery, comprising: a positive electrode having a positive-electrode active material layer reversibly inserting and extracting lithium ions on a positive-electrode current collector; a negative electrode having a negative-electrode active material layer reversibly inserting and extracting lithium ions on a negative-electrode current collector; and a nonaqueous electrolyte solution, wherein: at least one of the positive and negative electrodes has a film on the surface, at least one of the positive electrode and the negative electrode contains a nitrogen-containing cyclic compound, the nitrogen-containing cyclic compound is pyrrole, the electrode containing the nitrogen-containing cyclic compound is the same as the electrode having the film on the surface thereof, the nitrogen-containing cyclic compound is bonded to the surface of the positive-electrode active material layer or the negative-electrode active material layer, and the content amount of the nitrogen-containing cyclic compound is from 1 to 5 parts by mass with respect to 100 parts by mass of the nonaqueous solvent.