| 摘要 |
PURPOSE:To prevent direct inflow of electrons to a current collector to increase current efficiency and charge-discharge efficiency by covering one side of electrode with a high resistant layer having an electric resistance of 10<8>OMEGA.cm or more. CONSTITUTION:In a secondary battery having an electrode whose active material is a polymer, one side of the electrode is covered with a high resistant layer having an electric resistance of 10<8>OMEGA.cm or more. For example, a plate- like cathode 11 consists of a current collector 13 and an electrode active material 15 formed on the current collector, and the surface, opposite to the surface of anode, of the active material 15 is covered with a high resistant layer 17. An anode 21 consists of a current collector 23 and an electrode active material 25 formed on the current collector 23, and the surface, opposite to the surface of cathode, of the active material 25 is covered with a high resistant layer 27. |
