| 摘要 |
PURPOSE: To provide a nonaqueous electrolyte secondary battery having improved initial Coulomb efficiency and discharge capacity and a stable charge/ discharge cycle life. CONSTITUTION: This nonaqueous electrolyte secondary battery is provided with a chargeable/dischargeable positive electrode 3 containing lithium ions and a negative electrode 4 made of a carbon material storing or releasing lithium ions. The surface of the carbon negative electrode 4 is covered with an acrylic resin, the Coulomb efficiency in the initial stage and the discharge capacity can be increased, and little gas is generated. No peeling from a substrate occurs after many charge/discharge cycles, and stable cycle characteristics can be obtained. Processes such as heat treatment and reducing process are not required in this method, and the electrodes 3, 4 can be simply manufactured. |
