| 摘要 |
PURPOSE:To obtain a battery having long charge-discharge cycle life and large discharge capacity by preparing a positive mix by bonding positive active material powder comprising chalcogen compound and conductive material powder with a binder having three dimensional net structure, and sticking the positive mix on a core to form a positive electrode. CONSTITUTION:Positive active material powder mainly comprising amorphous metal chalcogen compound is mixed with conductive material powder such as graphite. A fluorine resin binder, which forms a three dimensional net in molding process, such as polytetrafluoroethylene, chlorotrifluoroethylene, and tetrafluoroethylene-hexafluoroethylene copolymer is added to the mixture, and they are kneaded, then molded in a sheet by a roller to form a positive mix. The positive mix is sticked on a metal core to form a positive electrode 2. A negative active material 4 comprising lithium foil is placed on the positive electrode 2 through a separator 3. A negative can 5 is fitted to a positive can through an insulating gasket 6 to form a nonaqueous solvent secondary battery. |
