| 摘要 |
PURPOSE:To improve the capacity, energy density and durability by using a porous film consisting of specified conductive polyaniline for positive pole active material. CONSTITUTION:A porous film consisting of conductive polyaniline having the illustrated expression for a repetition unit, which is soluble in organic solvent in a dedoped condition having a limiting viscosity (eta) of more than 0.40dl/g as measured in N-methylpyrolidone at 30 deg.C, but which is doped by proton acid of a pKa value of less than 4.0 to be insoluble in organic solvent, is used for positive pole active material. In the expression, (m) and (n) refert to the molar fraction of quinoimidine structure unit and a phenylene diamine structure unit in the repetition unit respectively, where 0<=m<=1, 0<=n<=1, m+n=1. It is preferable to use solvent-soluble polyaniline of a limiting viscosity of more than 0.40 for obtaining a porous film having a high strength and flexibility. |
