| 摘要 |
PROBLEM TO BE SOLVED: To obtain a nonaqueous electrolyte secondary battery which reduces the cycle deterioration rate and has a high reliability. SOLUTION: In this battery, a negative electrode 1 and positive electrode 2 are provided opposing through separators 3, and they are sealed in a battery can 5 through a sealing gasket 6. In this case, at least to one side collector (a negative electrode collector 10 or a positive electrode collector 11) of the negative electrodes 1 and the positive electrodes 2, an active material layer having a binder to keep active material is formed, and the binder to keep active material has a vinylidenefluoride and at least either a calboxyl group or a calboxylic acid ester group. Furthermore, it includes a copolymer with a material having a copolymer component which has a unsatulated double combination allowable to copolymerize with the vinylidene fluoride. And the binder to keep active material is bridged by radiating electron beams. |
