TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The lithium salt is a benzimidazolium salt. The lithium salt includes at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium antimony-fluoride, lithium chlorates, lithium tetrachloroaluminate, lithium tetrachlorogallate, lithium oxonitrate, lithium triflate, lithium tetraphenylborate, lithium bis(oxatlato)borate, lithium trifluoromethanesulfonate, lithium thiocyanate and lithium containing compounds of formulae (LiC(SO2CF3)3), (LiN(SO2CF3)), (LiO3SCF2CF3), (LiC6F5SO3) and (LiO2CCF3). The lithium-ion battery further comprises: an anode (10), a cathode (20), and an isolation film (30) disposed between the anode and the cathode and having a through hole, where the anode, the cathode and the isolation film form a receiving space (40) for receiving the electrolyte solution; an encapsulation structure (50) encapsulating the anode, the cathode and the isolation film; and a binder for binding the anode metal film to the first conducting component and binding the cathode metal film to the second conducting component. The anode comprises: a first conducting component; and an anode metal film formed on the first conducting component, where the isolation film is disposed on the first conducting component, and the through hole of the isolation film exposes a part of the first conducting component. The cathode comprises: a second conducting component; and a cathode metal film formed on the second conducting component, where the second conducting component is disposed between the isolation film and the cathode metal film, and the isolation film, the first conducting component and the second conducting component form the receiving space for receiving the electrolyte solution. The first conducting component is lithium, an alloy, a metal oxide, a nitride, a silicon material, a vanadate, a sulfide, a phosphorus compound or a carbon compound. The alloy is made of at least two comprising magnesium, calcium, aluminum, germanium, tin, lead, arsenic, antimony, bismuth, silver, gold, zinc, cadmium, mercury, nickel, copper, manganese and iron. The metal oxide is titanium dioxide, copper oxide, copper oxide, cobalt oxide, cobalt(II,III) oxide, nickel(II) oxide, iron oxide, iron(III)oxide, iron(II,III)oxide, cuprospinel, nickel iron oxide, cobalt ferrite, magnesium oxide, manganese vanadiumoxide, manganese molybdate, tungsten oxide, niobium and molybdenum oxides, tin oxide, tin(IV) oxide or a lithium compound of formula (Li4Ti5O12y). The silicon material is silicon, magnesium silicide, nickel silicon, calcium silicide, copper-silicon, copper silicide or a silicon compound of formula (SiOx). The second conducting component includes a transition metal oxide mixed with lithium. The transition metal oxide mixed with lithium is lithium manganese dioxide, lithium manganese oxide, lithium cobalt oxide, lithium dichromate, lithium chromate dihydrate, lithium nickel oxide, lithium iron oxide, lithium metal silicates, lithium metal orthosilicates or lithium compounds of formulae (LiMPO4Fq), LiM1(1-r)M2rPO4, LiM1(1-r)M2rSiO4, Li2M1(1-r)M2rSiO4, LiMn(0.5)Ni(0.5)O2, Li(1.15- alpha )Mn( beta )CO(chi)Ni( delta )O(2- sigma ) or LiMc(0.5)Mn(1.5)O4. The second conducting component is titanium disulfide, vanadium(V) oxide or molybdenum(VI)oxide.y = 0-0.1;x = 1 or 2;p, q, r = 0-1;M = Ni, Co, Mn or Fe;M1, M2 = Ni, Co, Mn, Fe, Zn, Zr, Mg, Ag, Al, Sb or Cr;alpha = 0-0.5, where the sum of beta , chi and delta is 1;sigma = 0-0.5; andMc = a divalent transition metal.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The ionic liquid has structure of formula (I). The ionic liquid comprises a metal compound of formula (Sb(-X)5-X) (II) and (X-Ar(=X)(-X)2-X) (III). The organic solvent is gamma -butyrolactone, ethylene carbonate, propylene carbonate, diethyl carbonate, propyl acetate, dimethyl carbonate or ethylmethyl carbonate. The carbon compound is a carbon powder, graphite, a carbon fiber, a carbon nanotube or graphene. The carbon powder has an average diameter of 100 nm to 30 mu m. The carbon powder is amorphous carbon, graphite-like carbon or a mesocarbon microbead. The binder is made of a material comprising poly(vinylidene fluoride), styrene butadeine rubber, polyamide or melamine resin. The isolation film is polyethylene and/or polypropylene.R1 = 1-6C-alkyl;R2 = 2-7C-alkyl;A = HSO4; andX = F, Cl, Br or I. EXAMPLE - 1 pts. wt. of Ethylene carbonate and 1 pts. wt. of diethyl carbonate were used as the solvent of the electrolyte solution. Lithium hexafluorophosphate was added into the solvent to form 1 M of lithium electrolyte solution. 1-Butyl-3-methylimidazolium hydrogen sulfate, 1-ethyl-3-methylimidazolium hydrogen sulfate, N-butyl-3-methylimidazolium hexafluoroantimonate and 1-butyl-3-methylimidazolium tetrachloroaluminate as ionic liquids, were respectively added into the above solvent to form desired electrolyte solution.