| 摘要 |
PURPOSE:To obtain a lithium secondary battery using disulfide compound and pielectron conjugate conductive high polymer as the active material thereof, in which deterioration of capacity is hard to be generated even in the case where over-charge is performed, by using organic electrolyte composed of ethylenecarbonate and diethylcarbonate in which lithium salt is dissolved. CONSTITUTION:DMCT polymer powder, for example, at 1 part by weight, dedoped chemical polymerized polyanyline powder at 1 part by weight, acetylene black at 0.25 part by weight and fluororesin powder at 0.5 part by weight are kneaded in a mortar, and thereafter, it is pressurized to be formed into a disc inside of a coin type battery case to form a positive electrode 1. A metallic lithium negative electrode 4 is attached to the inner surface of a sealing plate 5 made of stainless steel. Electrolyte 6 contacts with the negative electrode 4 and the positive electrode 1 through a separator 3. The electrolyte, which is obtained by mixing ethylenecarbonate and diethylcarbonate at 1:1 of volume ratio to obtain the solvent and adding LiBF4 in this solvent at 1.2M of concentration, is used as electrolyte. A battery, in which a change of capacity is hard to be generated even in the case where over-charge is performed, is thereby obtained. |
