| 摘要 |
PURPOSE:To restrain a dendrite phenomenon, and lengthen the service life by using a microporous film separator on whose surface a nickel layer having a specific thickness is formed. CONSTITUTION:A nickel layer of 20-180 angstrom is formed on the surface of a microporous film separator. Thereby, an electrolyte preservable ability can be improved without increasing electric resistance, and a zincic dendrite crystal is decomposed efficiently, so that service life performance of a battery can be improved. When this microporous film separator and a cellulose separator are provided, an effect becomes particularly large. |
