TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The active material of the positive pole is oxide, sulfide, phosphide, chloride, carbide or hexa-cyanide, phosphate or sulfate of transition metal, or doping material of the metal or non-metal elements of the materials. The active material of the positive pole adopts sodium manganese (IV) oxide (NaMn2O4), sodium cobalt oxide (NaCoO2), sodium nickel oxide (NaNiO2), sodium manganese dioxide (NaMnO2), sodium ferric phosphate (NaFePO4), sodium vanadium pentoxide (NaV2O5), sodium vanadium orthophosphate (NaVPO4F), disodium vanadyl phosphate (Na2VOPO4), sodium vanadium oxide (NaV3O8), sodium titanium zirconium phosphate (NaTiZr(PO4)3), vanadium oxide (VO2), vanadium trioxide (V2O3), manganese dioxide (MnO2), ferric oxide (Fe2O3), tin sulfide (SnS), sodium titanium disulfide (NaTiS2), sodium molybdenum disulfide (NaMoS2), sodium molybdenum oxide (NaMoO2), sodium tungsten (III) oxide (NaWO3), molybdenum carbide (Mo2C), tungsten carbide (WC), potassium difluoro cyanide (KF2(CN)6), dipotassium vanadyle phosphate (K2VOPO4), or material with the metal elements of the embedding compound, where metal elements comprises potassium (K), magnesium (Mg), aluminum (Al), zinc (Zn), manganese (Mn), or copper (Cu). The material compound of sodium ion is sodium sulfate, sodium halide, sodium nitrate, sodium hydroxide, sodium phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium acetate, or sodium oxalate; The material compound of potassium ion is potassium sulfate, potassium halide, potassium nitrate, potassium hydroxide, potassium phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, potassium acetate, or potassium oxalate. The electrolyte is added with a proper quantity of supporting electrolyte that is sulfate, nitrate, phosphate, acetate, oxalate, chloride, fluoride, or hydroxide. The anion is alkali metal, alkaline earth metal, rare metal, aluminum, magnesium, or zinc. Preferred Composition: The density of the electrolyte is 0.01-15 mol/L.