(EP953218-A1)      A lithium secondary battery comprises an immobilised electrolyte, containing alkali metal salt(s) (1), non-aqueous solvent(s) (2) and an immobilising polymer (3). (3) is a cellulose acetate (propionate), cellulose acetate butyrate, polyvinylidene fluoride hexafluoropropylenes or polyvinylidene-vinylacetates. The tetrafluoropropylene is present at 12 wt.% of the salts, solvents and/or polymer of the electrolyte.    Also claimed are (i) a lithium secondary battery where the electrolyte comprises one or more of solvents (a) to (e), (ii) preparation method of a lithium secondary battery comprising mixing (2); discharging (1) in (2); adding (3) and optionally monomers or oligomers with polymerisable functional group(s), polymerising the optional monomers/oligomers; and sandwiching the immobilised organic electrolyte between positive and negative electrodes to form the battery; and (iii) use of the polymers (3) as immobilising agents for the lithium battery.    Preferably (3) is used at 2-5 wt.% of the total system, and the cellulose polymer has an OH content 3 wt.%. (3) is optionally mixed with monomers or oligomers selected from urea formaldehyde, melamine or polyisocyanates, preferably crosslinked by heat, light or electrons. The polyvinylidene fluoride-tetrafluoropropylene is present at 4-8 wt.%, and the polyvinylpyrrolidone- vinylacetate is present at 5-10 wt.%. (1) is ClO4-, CF3SO3-, AsF6-, PF6-; and preferably LiPF6 or LiBF4, present at 0.1-1.5 M. The battery separator comprises a porous material manufactured from polyethylene, propylene, PC or cellulose; or glass fibre, preferably boron silicate based, and having a pore size of 10x10 nm - 1x1 mm. The separator is 10-25 thick.    USE -   The lithium secondary battery avoids problems with electrolyte leakage, and high-conductivity allows use at full capacity.    (CN1246205-A)      A lithium secondary battery comprises an immobilised electrolyte, containing alkali metal salt(s) (1), non-aqueous solvent(s) (2) and an immobilising polymer (3). (3) is a cellulose acetate (propionate), cellulose acetate butyrate, polyvinylidene fluoride hexafluoropropylenes or polyvinylidene-vinylacetates. The tetrafluoropropylene is present at 12 wt.% of the salts, solvents and/or polymer of the electrolyte.    Also claimed are (i) a lithium secondary battery where the electrolyte comprises one or more of solvents (a) to (e), (ii) preparation method of a lithium secondary battery comprising mixing (2); discharging (1) in (2); adding (3) and optionally monomers or oligomers with polymerisable functional group(s), polymerising the optional monomers/oligomers; and sandwiching the immobilised organic electrolyte between positive and negative electrodes to form the battery; and (iii) use of the polymers (3) as immobilising agents for the lithium battery.    Preferably (3) is used at 2-5 wt.% of the total system, and the cellulose polymer has an OH content 3 wt.%. (3) is optionally mixed with monomers or oligomers selected from urea formaldehyde, melamine or polyisocyanates, preferably crosslinked by heat, light or electrons. The polyvinylidene fluoride-tetrafluoropropylene is present at 4-8 wt.%, and the polyvinylpyrrolidone- vinylacetate is present at 5-10 wt.%. (1) is ClO4-, CF3SO3-, AsF6-, PF6-; and preferably LiPF6 or LiBF4, present at 0.1-1.5 M. The battery separator comprises a porous material manufactured from polyethylene, propylene, PC or cellulose; or glass fibre, preferably boron silicate based, and having a pore size of 10x10 nm - 1x1 mm. The separator is 10-25 thick.    USE -   The lithium secondary battery avoids problems with electrolyte leakage, and high-conductivity allows use at full capacity.    (JP2001507157-W)      A lithium secondary battery comprises an immobilised electrolyte, containing alkali metal salt(s) (1), non-aqueous solvent(s) (2) and an immobilising polymer (3). (3) is a cellulose acetate (propionate), cellulose acetate butyrate, polyvinylidene fluoride hexafluoropropylenes or polyvinylidene-vinylacetates. The tetrafluoropropylene is present at 12 wt.% of the salts, solvents and/or polymer of the electrolyte.    Also claimed are (i) a lithium secondary battery where the electrolyte comprises one or more of solvents (a) to (e), (ii) preparation method of a lithium secondary battery comprising mixing (2); discharging (1) in (2); adding (3) and optionally monomers or oligomers with polymerisable functional group(s), polymerising the optional monomers/oligomers; and sandwiching the immobilised organic electrolyte between positive and negative electrodes to form the battery; and (iii) use of the polymers (3) as immobilising agents for the lithium battery.    Preferably (3) is used at 2-5 wt.% of the total system, and the cellulose polymer has an OH content 3 wt.%. (3) is optionally mixed with monomers or oligomers selected from urea formaldehyde, melamine or polyisocyanates, preferably crosslinked by heat, light or electrons. The polyvinylidene fluoride-tetrafluoropropylene is present at 4-8 wt.%, and the polyvinylpyrrolidone- vinylacetate is present at 5-10 wt.%. (1) is ClO4-, CF3SO3-, AsF6-, PF6-; and preferably LiPF6 or LiBF4, present at 0.1-1.5 M. The battery separator comprises a porous material manufactured from polyethylene, propylene, PC or cellulose; or glass fibre, preferably boron silicate based, and having a pore size of 10x10 nm - 1x1 mm. The separator is 10-25 thick.    USE -   The lithium secondary battery avoids problems with electrolyte leakage, and high-conductivity allows use at full capacity.    (US6280881-B1)      A lithium secondary battery comprises an immobilised electrolyte, containing alkali metal salt(s) (1), non-aqueous solvent(s) (2) and an immobilising polymer (3). (3) is a cellulose acetate (propionate), cellulose acetate butyrate, polyvinylidene fluoride hexafluoropropylenes or polyvinylidene-vinylacetates. The tetrafluoropropylene is present at 12 wt.% of the salts, solvents and/or polymer of the electrolyte.    Also claimed are (i) a lithium secondary battery where the electrolyte comprises one or more of solvents (a) to (e), (ii) preparation method of a lithium secondary battery comprising mixing (2); discharging (1) in (2); adding (3) and optionally monomers or oligomers with polymerisable functional group(s), polymerising the optional monomers/oligomers; and sandwiching the immobilised organic electrolyte between positive and negative electrodes to form the battery; and (iii) use of the polymers (3) as immobilising agents for the lithium battery.    Preferably (3) is used at 2-5 wt.% of the total system, and the cellulose polymer has an OH content 3 wt.%. (3) is optionally mixed with monomers or oligomers selected from urea formaldehyde, melamine or polyisocyanates, preferably crosslinked by heat, light or electrons. The polyvinylidene fluoride-tetrafluoropropylene is present at 4-8 wt.%, and the polyvinylpyrrolidone- vinylacetate is present at 5-10 wt.%. (1) is ClO4-, CF3SO3-, AsF6-, PF6-; and preferably LiPF6 or LiBF4, present at 0.1-1.5 M. The battery separator comprises a porous material manufactured from polyethylene, propylene, PC or cellulose; or glass fibre, preferably boron silicate based, and having a pore size of 10x10 nm - 1x1 mm. The separator is 10-25 thick.    USE -   The lithium secondary battery avoids problems with electrolyte leakage, and high-conductivity allows use at full capacity.