TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The transition-metal compound is chosen from iron compound, manganese compound, nickel compound, cobalt compound, titanium compound and vanadium compound. The iron compound is chosen from iron(II) acetate (Fe(CH3COO)2), iron nitrate (Fe(NO3)2), iron compound (FeC2O2), iron sulfate, iron(II) chloride (FeCl2), iron iodide (FeI2) and iron fluoride (FeF2). The manganese compound is chosen from manganese(II) acetate (Mn(CH3COO)2), manganese nitrate (Mn(NO3)2), manganese compound (MnC2O2), manganese sulfate, manganese(II) chloride (MnCl2), manganese iodide (MnI2) and manganese fluoride (MnF2). The nickel compound is chosen from nickel(II) acetate (Ni(CH3COO)2), nickel nitrate (Ni(NO3)2), nickel compound (NiC2O2), nickel sulfate, nickel(II) chloride (NiCl2), nickel iodide (NiI2) and nickel fluoride (NiF2). The cobalt compound is chosen from cobalt(II) acetate (Co(CH3COO)2), cobalt nitrate (Co(NO3)2), cobalt compound (CoC2O2), cobalt sulfate, cobalt(II) chloride (CoCl2), cobalt iodide (CoI2) and cobalt fluoride (CoF2). The titanium compound is chosen from titanium hydride and titanium tetraisopropoxide. The vanadium compound is chosen from vanadium(II) acetate (V(CH3COO)2), vanadium nitrate (V(NO3)2), vanadium compound (VC2O2), vanadium sulfate, vanadium(II) chloride (VCl2), vanadium iodide (VI2) and vanadium fluoride (VF2). The anionic compound is phosphate-based compound or sulfate-based compound. The phosphate-based compound is chosen from ammonium dihydrogen phosphate, phosphoric acid, diammonium hydrogen phosphate and triammonium phosphate. The sulfate-based compound is chosen from sulfuric acid, diammonium sulfate, ferrous sulfate, manganese sulfate, nickel sulfate, cobalt sulfate, vanadium sulfate and titanium sulfate. The lithium-based compound is chosen from lithium acetate, lithium hydroxide, lithium nitrate, lithium carbonate, lithium phosphate and lithium fluoride. The electrode material comprises lithium iron phosphate, lithium cobalt phosphate, lithium nickel phosphate, lithium titanium phosphate, fluorine-doped lithium vanadium phosphate, and/or lithium compound of formula: LixVy(PO4)z, LixTiy(PO4)z, LixVy(PO4)y, LixFey(SO4)z, LixMny(SO4)z, LixCoy(SO4)z, LixNiy(SO4)z, LixTiy(SO4)z or LixVy(SO4)z, where x, y and z are integer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition The polyol solvent is chosen from ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol and butylene glycol.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The combustible liquid is chosen from ethanol, methanol, acetone, acetaldehyde, thinner, kerosene and benzene.