TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Materials: The composite body may also include an adhesion promoting layer (D) which has a melting point lower than those of the separator, cathode and anode layers and which may contain solids (III) and/or a plasticizer. The composite body structure comprises (a') a cathode layer (B), an adhesion promoting layer (D), a separator layer (Aa), another adhesion promoting layer (D) and an anode layer (C); (b') a cathode or anode layer (B, C), an adhesion promoting layer (D), a separator layer (Aa), another adhesion promoting layer (D), a conventional separator layer, another adhesion promoting layer (D) and an anode layer (C); or (c') a cathode layer (B), an adhesion promoting layer (D), a conventional separator layer, another adhesion promoting layer (D), a separator layer (Aa), another adhesion promoting layer (D) and an anode layer (C). Preferred Process: The layers are contacted and moulded prior to lamination at high temperature and/or pressure.    TECHNOLOGY FOCUS - POLYMERS - Preferred Materials: The adhesion promoting layer (D) is a polyethylene oxide, polyvinyl ether, polyacrylate, polymethacrylate, polyvinyl pyrrolidone, polyurethane, a wax-like (co-)polyolefin, a rubber-like material and/or polyisobutylene. EXAMPLE - An anode foil was prepared by applying a 100 mu thick layer of 96 wt.% carbon and 4 wt.% polyisobutylene binder onto a 15 mu thick copper foil with a 3 mu thick adhesion promoting layer of 93.5 wt.% PEO (MW = 2000000 g/mol), 6 wt.% polyethylene glycol-600-dimethacrylate and 0.5 wt.% benzoyl peroxide on a 75 mu thick PET backing foil (having a 0.5 mu thick silicone release layer) at 90degreesC and at 1 m/min. in a hot calendaring mill. A cathode foil was produced by applying a 200 mu thick layer of 80 wt.% lithium cobalt oxide, 10 wt.% conductive carbon black and 10 wt.% polyvinylidene chloride binder onto a 15 mu thick Al foil with a 3 mu thick adhesion promoting layer as described above at 90degreesC and at 1 m/min. in a hot calendaring mill. A separator foil was prepared by dispersing 80 g wollastonite, which had been water-proofed with methacrylsilane and which had a mean particle size of 3 mu (pH 8.5 in aqueous suspension), in 200 g THF and adding 15 g Polyox (RTM, PEO with a number average molecular weight of 2000000 g/mol), 5 g Pluriol (RTM, methacrylic acid diester of a propylene oxide-ethylene oxide block copolymer) and 0.05 g benzyl dimethyl ketal. This mixture was applied by doctor blade onto a siliconized release paper at 60degreesC, left for diluent removal within 5 min. and peeled off as a 25 mu thick film which was photo-cross-linked under N2 by 10 min. exposure at 5 cm distance to radiation from super-actinic fluorescent tubes. The resulting separator layer was inserted without contact between the anode and cathode foils, having external metal faces, and the composite was calendared as described above, followed by storage for 60 min. at 120degreesC for cross-linking of the adhesion promoting layers to obtain a compact adhesive bonded electrode stack. The stack was placed in a foil bag, the electrodes were friction welded to electrode collector foils, a 1 M solution of LiPF6 in ethylene carbonate/diethyl carbonate was introduced and the housing was welded. The electrolyte penetrated the stack by capillary force, with displacement of air, in about 30 min.