NOVELTY - A lithium polymer battery has fused-salt polymer electrolyte layer in continuous phase, provided between anode (1) and cathode (3). At least one of active material (4,6) of anode and cathode is dispersed in continuous phase of fused-salt polymer electrolyte (5,7) with an electroconductive material.    USE - As lithium polymer battery.    ADVANTAGE - The lithium polymer battery has high capacitance. The composite electrode is formed with favorable electrochemical surface between polymer electrolyte and active material. The impedance of composite anode and composite cathode are decreased.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of lithium polymer battery. Fused-salt polymer electrolyte precursor polymerization liquid containing quaternary ammonium salt having polymerizable functional group, quaternary ammonium salt which does not have polymerizable functional group, lithium salt, electrochemically inactive polymeric reinforcement material and polymerization initiator is prepared. Thermal polymerization of precursor polymerization liquid is carried out with drying in the presence of active material and electroconductive material to obtain composite electrode. The composite electrode has active material layer obtained from dispersed phase of active material and electroconductive material provided on collector of each electrode, and continuous phase of fused-salt polymer electrolyte. The polymerization liquid is formed into fused-salt polymer electrolyte film. The electrolyte film is heat-fused in composite electrodes, and thermal polymerization is carried out, such that continuous phase of electrolyte in electrode integrates with electrolyte film. The lithium polymer battery is manufactured.    DESCRIPTION OF DRAWING(S) - The figure shows the sectional view of lithium polymer battery.    anode (1)    polymer electrolyte film (2)    cathode (3)    anode active material (4)    polymer electrolyte (5,7)    cathode active material (6)