| 摘要 |
A non-aqueous electrolyte secondary cell is disclosed wherein the irreversible capacity degradation which is caused under charging conditions is controlled. The non-aqueous electrolyte secondary cell includes a positive electrode capable to dope and dedope lithium, a negative electrode and an electrolyte which is dissolved in a non-aqueous solvent. The organic, non-aqueous solvent comprises from 0.005 M to 0.9 M of at least one monomethoxy benzene (anisole) or halogenated monomethoxy benzene compound (halogenated anisoles) with 1 to 4 halogen substituents. Preferred halogens are F,Cl and Br. Preferred examples of the organic co-solvent used in accordance with the instant invention are: Anisole 4-Fluoro-anisole, 4-Bromo-anisole, 4-Chloro-anisole, 2,4-Difluoro-anisole, 2,4-Dibromo-anisole, 2,4-Dichloro-anisole, 2,3,5,6-Tetrafluoro-anisole and 4-Chloro-2-Fluoro-anisole. <IMAGE> |
