| 摘要 |
PURPOSE:To improve the storage performance and cycle characteristic by constituting the positive and negative electrodes by coating each core member consisting of a metal foil with each of the positive and negative electrode activating aubstances, using a specific substance as binder, and then drying these substances. CONSTITUTION:As for a negative electrode 1, the carbon which can absorb and liberate lithium is added with polytrifluoroethylene in a prescribed ratio as a binder, and formed to a slurry by using a solvent, and applied onto both the surfaces of a copper foil as core member. The negative electrode 1 is joined with a negative electrode can 4 by a negative electrode lead 5. As for a positive electrode 2, acetylene black as conductive agent and polytrifluoroethylene as binder are added in each prescribed ratio into a cobalt oxide as activating substance which can be electric-charged and discharged and formed to a slurry, and applied onto both the surfaces of an Al foil, and the positive electrode is obtained, which is joined with a positive electrode cap 6 by a lead 7. Accordingly, the heat treatment after the coating of the activating substance in slurry form can be carried out at a high temperature, and the storage performance and cycle characteristic can be improved. |
