TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Microcapsules: The microcapsules have a size of 0.1-150 mum and shell thickness of 0.01-10 mum.The shell consists of a polymer (I), optionally mixed with inorganic materials (II).The microcapsules are microparticles varying in amount and shape.They are used in amounts of 10-70 wt.% with respect to the anode, cathode or separator composition, whilst the fraction of microcapsule shell is 10-50 wt.% with respect to total filled microcapsules.They may be made as a cohesive film acting as separator and/or be percolation lines forming conductive paths in the electrode composition.Preferred Contents: The contents of the microcapsules are as follows:(a) conductive salt, preferably Li tetrafluoroborate (LiBF4), Li hexafluorophosphate (LiPF6), Li perchlorate (LiClO4), Li oxalatoborate, Li fluorosulfone and Li fluorosulfimide;(b) aprotic solvent, preferably N-methylpyrrolidone, gamma-butyrolactone, alkyl carbonates, acetonitrile;(c) inorganic absorber, preferably magnesium oxide (MgO), alumina (Al2O3), potassium hydroxide (KOH), calcium oxide (CaO), titanium dioxide (TiO2);(d) flame retardant, e.g. fluorohydrocarbon derivative;(e) circuit breaker, e.g. polyethylene wax.They may also contain encapsulated Li metal as additive.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Materials: (II) is silica (SiO2), Al2O3, MgO.    TECHNOLOGY FOCUS - POLYMERS - Preferred Materials: Preferred (I) are as follows: A. Polyolefins, comprising polyethylene, polypropylene, polyisobutene or copolymers obtained by free radical or ionic polymerization, especially styrene/butadiene (isoprene) polymerized anionically as 2, 3 or multiblock polymer; or a polymer of vinyl ethers (e.g. methyl, ethyl, butyl ethers), (meth)acrylates with over 3 C alcohol groups or copolymers, e.g. with vinylpyrrolidone, vinylimidazole or vinyl ethers, polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl acetate, polyvinyl propionate; B. Polyfluoro-elastomers based on PVDF (polyvinylidene fluoride), PTFE, HFP (hexafluoropropylene polymer) or PFA (polytetrafluoroethylene with perfluoroalkoxy side groups), e.g. Dyneon PFA (TM), Dyneon ETFE (TM) (ethylene-tetrafluoroethylene copolymer), Dyneon FEP (TM) (TFE/HFP copolymer) or Solef PVDF (TM). EXAMPLE - A homogeneous paste was prepared from 100 parts deionized water, 50 parts MCMB (TM) (microparticles), 5 parts 50% styrene/butadiene dispersion, 50 parts microparticles (A) (diameter 0.01-0.1 mm, polymer shell Styroflex (TM); contents lithium hexafluorophosphate (LiPF6) as 1M solution in ethylene carbonate/dimethyl carbonate 1:1) with polymer/contents weight ratio 1:1 and 10 parts acetylene black. The paste was spread evenly on copper (Cu) foil and dried to give a 100 mum thick anode composition on the foil. 60 parts lithium oxide were mixed with 10 parts BSP SAS (TM) and 50 parts (A) with polymer/contents weight ratio 0.4:1.6, made into a homogeneous paste with 10 parts ethyl methyl carbonate and spread on primed aluminum (Al) foil to give a 120 mum thick coating. To produce the separator, 150 parts Kynar 2801 (TM) were treated with 25 parts LiPF6 in 100 parts ethylene carbonate and 200 parts ethyl methyl carbonate and 20 parts magnesia (MgO), homogenized at 105 degrees C and extruded at 85-90 degrees C as 90 mum thick foil. The separator was placed between the anode and cathode so that the Cu and Al foils were on the outside. The system was wound up, then calendered at 100 degrees C. 10 m of the wound strip, with a width of 10 cm, were placed in a housing and charged up to 4.25 V (in 6 hours), then discharged at 0.1 mA/cm2 to 2.8 V. This system had a potential of 3.8 V, capacity of 35 Ah, life of over 600 cycles and mass of 1.6 kg.