(BE1003710-A3)      A compsn. comprising a conductive polymer chosen from polypyrrole and.or substd. polypyrrole, a vandium cpd. and an anion.    The V cpd. is pref. the pentoxide. The anion is chloride octanesulphate, p-toluenesulphonate, butylsulphonate, methylsulphonate, trifluoromethane.    The (substd) pyrrole is chemically polymerised in an aqs. reaction medium contg. the C vpd as oxidising agent and an acid and pref. also a salt the acid providing the anion.    USE/ADVANTAGE -   In battery foils (claimed). The compsn has a large specific surface (greater than 5 m2/g) and is suitable for use in high energy density condensers and rechargeable batteries.    (US5202060-A)      A compsn. pref. having a specific surface area at least 5m2/g, comprises (A) an electroconductive (substd.) polypyrrole, (B) a V cpd. pref. V2O5, and (C) an anion, pref. a chloride, or octane-, p-toluene-, butyl-, Me- or CF3-sulphonate.    The prepn. pref. comprises polymerising a (substd.) pyrrole in an aq. reaction medium contg. a V oxidising cpd. and an acid, corresp. to the anions. The reaction mixt. contains salt(s).    USE/ADVANTAGE -   Electrode in an electrochemical storage device. The electrode has a high energy per unit mass and unit vol. The polymer has high resistance to ageing over a wide range of temp. and storage conditions. The high specific surface area material may be used in the prodn. of leaflet batteries and has a high conductivity    (JP3159736-B2)      A compsn. comprising a conductive polymer chosen from polypyrrole and/or substd. polypyrrole, a vandium cpd. and an anion.    The V cpd. is pref. the pentoxide. The anion is chloride, octanesulphate, p-toluenesulphonate, butylsulphonate, methylsulphonate, trifluoromethane.    The (substd.) pyrrole is chemically polymerised in an aqs. reaction medium contg. the C vpd. as oxidising agent and an acid and pref. also a salt, the acid providing the anion.    USE/ADVANTAGE -   Used in battery foils (claimed). The compsn. has a large specific surface (greater than 5 m2/g) and is suitable for use in high energy density condensers and rechargeable batteries. @(9pp Dwg.No.0/0