TECHNOLOGY FOCUS - POLYMERS - Preferred Method: The viscosity and internal resistivity of the electrolyte increase to a level sufficient to terminate the generation of current from the cell, safely.Preferred Compounds: The reactive moieties of the monomer are selected from vinyl, allyl, vinyl ether, allyl ether, allyl ester, allyl amine, acrylyl, acrylate, acrylamide, methacrylyl, methacrylate and crotoxyl groups. The multifunctional monomer is selected from di, tri, tetravinyl ether monomers and is preferably divinyl ether monomer which is divinyl ether of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,4-butane diol or 1,4-cyclohexane dimethanol. The electrolyte further comprises a monofunctional monomer which is allyl ether or preferably vinyl ether of 1-butanol, 2-ethylhexanol or cyclohexanol. A polymerization initiator (lithium ion) which increases the rate of polymerization, and an inhibitor (tertiary amine) which inhibits the decrease in the rate of polymerization are contained in the electrolyte. The electrolyte also comprises a solid porous separator which is porous polyolefin separator containing microporous pseudoboehmite layer.Preferred Composition: The weight ratio of the multifunctional or monofunctional monomer to the total weight of the salt is 0.01:1-0.25:1 or 0.02:1-0.15:1, preferably 0.02:1-0.1:1.Preferred Condition: The multifunctional monomer preferably polymerizes rapidly above 60-170 degreesC, for 36 hours.Preferred Cathode: The cathode comprises an electroactive transition metal chalcogenide, electroactive conductive polymer or an electroactive sulfur containing material which has in its oxidized state, a polysulfide moiety Sm where m = 3-10, preferably 6-10 or carbon-sulfur polymer containing more than 75 weight% of sulfur, or disulfide group. The carbon-sulfur polymer has polymer backbone chain having polysulfide moiety covalently bonded by one or both of its terminal sulfur atoms on a side group to the polymer chain.Preferred Anode: The anode comprises anode active materials selected from lithium, lithium-aluminum alloy, lithium-tin alloys, lithium-intercalated carbons and lithium-intercalated graphites.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Electrolyte: The electrolyte is gel polymer electrolyte, solid polymer electrolyte or preferably liquid electrolyte.Preferred Solvents: The solvents of the non-aqueous electrolyte are selected from N-methyl acetamide, acetonitrile, organic carbonates, sulfones, sulfolanes, N-alkyl pyrrolidones, dioxolanes, glymes, siloxanes and xylenes. SPECIFIC COMPOUNDS - The ionic salt of the electrolyte is a lithium salt selected from 15 organic and inorganic salts such as lithium bromide and the lithium salt of tris(2,4,6-trifluoromethylsulfonyl)phenol.