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`A lithium-ion battery comprising:
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`CLAIMS
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`a positive electrode including a positive current collector and a positive conductive
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`membrane which is formed on the surface of the positive current collector by coating, drying
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`and compacting a positive mixture slurry containing a positive active material, a positive
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`conductive additive and a positive binder;
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`a negative electrode including a negative current collector and a negative conductive
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`membrane which is formed on the surface of the negative current collector by coating, drying
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`and compacting a negative mixture slurry containing a negative active material, a negative
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`conductive additive and a negative binder,
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`a separator;
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`an electrolyte, and
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`a packaging foil,
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`wherein,
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`the compacted density of the positive conductive membrane is at a range from
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`3.9g/cm3 to 4.4g/cm3;
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`the compacted density of the negative conductive membrane is at a range from
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`1.55g/cm3 to 1.8g/cm3,
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`the ratio of the capacity of the negative active material to the capacity of the
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`positive active material is at a range from 1 to 1.4, the charging rate of said lithium-ion
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`battery is at a range from 1.3C to SC, wherein the capacity of negative active material / the
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`capacity of positive active material =(negative coating weight per unit areaX the weight ratio
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`of negative active materials X the capacity per gram of negative active material)/(positive
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`coating weight per unit area X the weight ratio of positive active materials X the capacity per
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`gram of positive active material).
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`2.
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`The lithium-ion battery according to claim 1, wherein, the compacted density of said
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`positive conductive membrane is at a range from 3.95g/cm3 to 4.35g/cm3.
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`3.
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`The lithium-ion battery according to claim 1, wherein, the compacted density of said
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`negative conductive membrane is at a range from 1.55g/cm3 to 1.7 5g/cm3.
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`4.
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`The lithium—ion battery according to claim 1, wherein, the ratio of the capacity of the
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`negative active material to the capacity of the positive active material is at a range from 1.03
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`13
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`to 1.2.
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`5.
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`The lithium-ion battery according to claim 1, wherein,
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`in formation of the negative conductive membrane, the coating weight of solid
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`components in the negative mixture slurry on the surface of the negative current collector is
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`at a range from 120mg/1540.25mm2 to 190mg/154O.25mm2;
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`in formation of the positive conductive membrane, the coating weight of solid
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`components in the positive mixture slurry on the surface of the positive current collector is at
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`a range from 230mg/1540.25mm2 to 380mg/1540.25mm2.
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`6.
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`The lithium-ion battery according to claim 1, wherein, said positive active material is
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`at least one selected from the group consisting of lithium cobaltate LiCoOz, lithium
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`manganate LiMn204, lithium iron phosphate LiFePO4 and ternary material NCM.
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`7.
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`The lithium—ion battery according to claim 1, wherein, said negative active material is
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`carbon material which is at least one selected from the group consisting of soft carbon, hard
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`carbon, artificial graphite, natural graphite and mesocarbon microbead.
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`8.
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`The lithium-ion battery according to claim 1, wherein, said electrolyte is a non-water
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`electrolyte containing a non-water organic solvent and a lithium salt.
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`9.
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`The lithium-ion battery according to claim 8, wherein,
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`said non-water organic solvent is a mixture of chain ester and cyclic ester;
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`said chain ester is at least one selected from the group consisting of dimethyl
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`carbonate DMC, diethyl carbonate DEC, ethyl methyl carbonate EMC, methyl propyl
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`carbonate 1\/[PC, dipropyl carbonate DPC, fluorine-containing chain ester, sulphur-containing
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`chain ester and unsaturated carbon-carbon bond-containing chain ester;
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`said cyclic ester is at least one selected from ethylene carbonate EC, propylene
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`carbonate PC, vinylene carbonate VC, y-butyrolactone y-BL, trimethylene sulfite, fluorine-
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`containing cyclic ester, other sulphur-containing cyclic ester or other unsaturated carbon-
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`carbon bond-containing cyclic ester,
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`said lithium salt is at least one selected from the group consisting of LlPF6, LiBF4,
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`LiClO4, LiCF3SO3, LiN(SOzCF3)2 and LiN(SOzC2F5)2.
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