Samsung Sdi Co., Inc.

So-Hyun Hur

Yong-Chul Park

Jong-Hwa Lee

Duck-Chul Hwang

Jae-Yul Ryu

Jeom-Soo Kim

Euy-Young Jung

Sae-Weon Roh

Sung-soo Kim

Nam-Soon Choi

In-Tae Mun

Sung-Soo Kim

Man-Seok Han

In-Haeng Cho

Jin-Kyu Hong

Jin-Bum Kim

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: 

Electrolyte for rechargeable lithium battery and rechargeable lithium battery

An electrode assembly and a rechargeable battery using the same include a positive electrode including a positive current collector and a positive active material on the positive current collector; a negative electrode including a negative current collector and a negative active material on the negative current collector; an outer electrode including an outer current collector and an outer active material on the outer current collector, wherein the outer current collector includes an outer surface facing away from an outer separator and an inner surface facing toward the outer separator, and the outer active material is on both the outer surface and the inner surface, and wherein a thickness of the outer active material is less than at least one of a thickness of the positive active material or a thickness of the negative active material.

Electrode assembly and rechargeable battery using the same

A positive electrode protective layer composition of a rechargeable lithium battery includes a polymer compound and an ionic liquid including a borate-based anion. A rechargeable lithium battery includes the positive electrode protective layer. A method of manufacturing the same is also provided.

Positive electrode protective layer composition, rechargeable lithium battery including protective layer for positive electrode and method of manufacturing same

An electrode for a rechargeable lithium battery and method of manufacturing a rechargeable lithium battery including the electrode is disclosed. In one embodiment, the electrode includes i) a current collector, ii) a first electrode composition layer provided on a surface of the current collector and iii) a second electrode composition layer farther than the first electrode composition layer from the current collector. Further, each of the first and second electrode composition layers comprises an active material and a conductive material, and wherein the amount of the conductive material of the first electrode composition layer is different from that of the conductive material of the second electrode composition layer. The electrode further includes an additional first electrode composition layer farther than the second electrode composition layer from the current collector and an additional second electrode composition layer farther than the additional first electrode composition layer from the current collector.

Electrode with plural active material layers with different amounts of conductive material for rechargeable lithium battery and method for manufacturing the same and rechargeable lithium battery including the electrode

A positive electrode and a rechargeable lithium battery including the same, the positive electrode including a current collector and a positive active material layer disposed on the current collector. The positive active material layer includes a positive active material and a binder including an ion conductive polymer including a carboxylate group.

Positive electrode including a binder for rechargeable lithium battery and rechargeable lithium battery including the same

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 Rand Rare independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CH, 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.

Electrolyte including an additive for rechargeable lithium battery and rechargeable lithium battery including same

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 LiPFand a lithium imide-based compound.LiNiCoMnMO&#x2003;&#x2003;(1)LiMnMO&#x2003;&#x2003;(2)M'PO&#x2003;&#x2003;(3)wherein each of M and M&#x2032; 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&#x2266;a&#x2266;1.1, 0&#x2266;b&#x2266;0.999, 0&#x2266;c&#x2266;0.999, 0&#x2266;d&#x2266;0.999, 0.001&#x2266;e&#x2266;0.2, 0.95&#x2266;h&#x2266;1.1, 0.001&#x2266;i&#x2266;0.2, 1&#x2266;y&#x2266;4, 0&#x2266;y&#x2266;7, and 2&#x2266;z&#x2266;30.

Rechargeable lithium battery

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 LiCoM'O, and the coating layer is made of a material such as MPO. 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.

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.

A positive electrode for a rechargeable lithium battery including a net-type current collector and a positive active material layer formed on both sides of the current collector and also including a positive active material and a binder and having a thickness of about 150 &#x3bc;m or more, a method of manufacturing the same, and a rechargeable lithium battery including the same.

Positive electrode for rechargeable lithium battery, method for manufacturing the same, and rechargeable lithium battery including the same

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 LiCOMOand a surface-treatment layer. In the core compound, 0.95&#x2266;a&#x2266;1.1, 0.002&#x2266;b&#x2266;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.

Positive electrode for rechargeable lithium battery and rechargeable lithium battery including same

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: MHPO, 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&#x2266;w&#x2266;4, 0&#x2266;x&#x2266;4, 1 &#x2266;y&#x2266;7, and 2&#x2266;z&#x2266;30.

Electrode for rechargeable lithium battery and rechargeable lithium battery including same

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.

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Yongin-si, South Korea

So-Hyun Hur