Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: wherein n ranges from 1 to 12 and R1 and R2 are independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CmH(2m+1), in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.

Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: wherein n ranges from 1 to 12 and R1 and R2 are independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CmH(2m+1), in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiOx (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.

Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: wherein n ranges from 1 to 12 and R1 and R2 are independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CmH(2m+1), in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.

Abstract: The rechargeable lithium battery includes a positive electrode which includes a positive active material, a negative electrode, and an electrolyte which includes a non-aqueous organic solvent and a lithium salt. The positive active material includes a core including at least one of a compound represented by Formula 1 and a compound represented by Formula 2, and a surface-treatment layer which is formed on the core and includes a compound represented by Formula 3. The lithium salt includes LiPF6 and a lithium imide-based compound. LiaNibCocMndMeO2??(1) LihMn2MiO4??(2) M?xPyOz??(3) wherein each of M and M? is independently selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element, a rare earth element, and combinations thereof, 0.95?a?1.1, 0?b?0.999, 0?c?0.999, 0?d?0.999, 0.001?e?0.2, 0.95?h?1.1, 0.001?i?0.2, 1?y?4, 0?y?7, and 2?z?30.

Abstract: The rechargeable lithium battery of the present invention includes a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte. The positive active material includes a core and a coating layer formed on the core. The core is made of a material such as LiCo0.98M?0.02O2, and the coating layer is made of a material such as MxPyOz. The electrolyte solution includes a nitrile-based additive. The rechargeable lithium battery of the present invention shows higher cycle-life characteristics and longer continuous charging time at high temperature.

Abstract: A rechargeable lithium battery including a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte including a non-aqueous organic solvent and a lithium salt. The positive electrode has an active-mass density of about 3.7 to 4.1 g/cc, and the non-aqueous electrolyte includes a nitrile-based compound additive, a non-aqueous organic solvent, and a lithium salt.

Abstract: In one aspect, a negative active material for a lithium secondary battery including silicon oxide represented by a chemical formula SiOx (1.1<x<1.5) and a negative electrode and a lithium secondary battery including the negative active material is provided. The silicon oxide may be amorphous silicon oxide.

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiOx (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.

Abstract: Provided are a negative active material for a rechargeable lithium battery, which includes a first silicon oxide (SiOx) and a second silicon oxide (SiOx) with a particle diameter differing from the one of the first silicon oxide (SiOx), a negative electrode including the negative active material, and a method of manufacturing the negative electrode, and a rechargeable lithium battery including the negative electrode. The first silicon oxide (SiOx) and second silicon oxide (SiOx) have a particle distribution peak area ratio ranging from 3 to 8.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.

Abstract: A positive electrode includes a current collector and a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material including a core including a compound LiaCO1-bMbO2 and a surface-treatment layer. In the core compound, 0.95?a?1.1, 0.002?b?0.02, and M is one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Sc, Y, Ti, Zr, Hf, Rf, V, Nb, Ta, Db, Cr, Mo, W, Sg, Tc, Re, Bh, Fe, Ru, Os, Hs, Rh, Ir, Pd, Pt, Cu, Ag, Au, Zn, Cd, B, Al, Ga, In, Tl, Si, Ge, Sn, P, As, Sb, Bi, S, Se, Te, Po. The surface-treatment layer includes a compound including element of P, and one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Sc, Y, Ti, Zr, Hf, Rf, V, Nb, Ta, Db, Cr, Mo, W, Sg, Tc, Re, Bh, Fe, Ru, Os, Hs, Rh, Ir, Pd, Pt, Cu, Ag, Au, Zn, Cd, B, Al, Ga, In, Tl, Si, Ge, Sn, As, Sb, Bi, S, Se, Te, Po.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 ?m and about 6 ?m. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 ?m and about 6 ?m. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l.

Abstract: An electrode, for a rechargeable lithium battery, including a current collector; an active material layer disposed on the current collector; and a coating layer disposed on the active material layer. The coating layer includes a lithium ion conductive polymer and an inorganic material represented by Formula 1: MwHxPyOz, wherein M is an element selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element, a rare earth element, and a combination thereof; and 1?w?4, 0?x?4, 1 ?y?7, and 2?z?30.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.

Abstract: A secondary battery may be manufactured with an electrode assembly having a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. A container encases the electrode assembly. A hole formed on one end of the container with a stepped configuration that opens with different diameters on opposite sides of a cap plate and a safety valve mounted in the stepped surface of the hole, is configured to rupture and tear open upon occurrence of a predetermined internal battery pressure.

Abstract: A positive electrode including a current collector; a positive active material layer disposed on the current collector; and a coating layer disposed on the positive active material layer. The coating layer includes a binder and a inorganic additive. The binder is a poly(vinylidenefluoride-hexafluoropropylene) copolymer comprising 2 to 16 mole % of hexafluoropropylene. The positive electrode for a rechargeable lithium battery suppresses side-reactions between a positive electrode and an electrolyte, at a high voltage.