TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The additive comprises a nano layer structure, where the nano layer structure comprises two layers of tetrahedral silicon dioxide and one layer of octahedral aluminum hydroxide. The organic quaternary phosphonium salt is of formula ((R-P+(R)(R)-R) (B-)). The cathode comprises lithium iron phosphate, lithium manganese oxide, lithium cobalt oxide, lithium nickel cobalt oxide of formula (LiNixCoyO2), lithium nickel manganese oxide of formula (LiNixMnyO4) or lithium nickel cobalt manganese oxide of formula (LiNixCoyMnzO2). The anode comprises carbon, graphite, mesocarbon microbeads, lithium titanate or lithium.R = alkyl, halocarbon, or ester;B- = anion such as hexafluorophosphate, perchlorate, tetrafluoroborate or bis(trifluoromethane)sulfonamide; andx, y, z = not defined.The additive is present at 0.1-5 wt.% of the electrolyte. The lithium salt comprises lithium hexafluorophosphate, lithium bis(oxalate)borate, lithium tetrafluoroborate, lithium perchlorate, or a lithium salt having a central atom of carbon, nitrogen, boron or aluminum. The modifier is present at 0.05-5 wt.% of the electrolyte solution. The inorganic clay is present at 0.1-5 wt.% of the electrolyte solution. The nano layer structure comprises montmorillonite, beidellite, canbyite, smectite, kaolin, or mica. Preferred Method: The inorganic clay in the electrolyte solution is modified into hydrophobic clay by the modifier, and the inorganic clay is formed with the nano layer structure.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The carrier comprises cyclic carbonates, chain-shaped carbonates, cyclic ether or chain-shaped ether. The organic solution comprises cyclic carbonates, chain-shaped carbonates, cyclic ester, chain-shaped ester or polymer. EXAMPLE - 0.5 g Purified inorganic clay was mixed with 50 ml of carbonate-based organic solution (composed of ethylene carbonate (EC), dimethyl carbonate (DMC) and ethyl methyl carbonate (EMC) mixed at predetermined volume ratio of 2:3:1, respectively). Then, 0.2 g tributyl phosphate was dissolved in 50 ml of another carbonate-based organic solution composed of EC:DMC:EMC at a ratio of 2:3:1), for functioning as a modifier, and then mixed with the clay-containing organic solution and stirred for 24 hours to perform cation exchanges. Then, 1M of lithium hexafluorophosphate was added to obtain the electrolyte.