Samsung Sdi Co., Inc.

Dohyung Park

Minhan Kim

Seonyoung Kwon

Jihyun Kim

Jinhwa Kim

Dongjin Kim

ILseok Kim

KyoungHyun Kim

Daehoe Lee

Junseok Park

Gyuran Jeon

Jeonjin Choi

Joongho Moon

Yumi Song

Sooyoun Park

Sanghoon Kim

Sol Choi

Yongchan You

Yunhee Kim

Kwanghwan Cho

Joong-Ho Moon

Kyoung Soo Kim

Sun-Ho Kang

Juhyeong Han

Haneol Park

Mingzi Hong

Erang Cho

Young Jin Park

Changwook Kim

Eunsung Lee

Eun Jung Kim

Taejeong Kim

YoungJin Park

Jungyeon Won

Jungwook Cha

Sun-Joo Choi

Sangwoo Cho

Okgyu Lim

Youngki Kim

Kunwoo Lee

Ilseok Kim

A cobalt oxide for a lithium secondary battery, a method of preparing the cobalt oxide; a lithium cobalt oxide for a lithium secondary battery formed from the cobalt oxide; and a lithium secondary battery having a positive electrode including the lithium cobalt oxide, the cobalt oxide having a tap density of about 2.8 g/cc to about 3.0 g/cc, and an intensity ratio of about 0.8 to about 1.2 of a second peak at 2&#x3b8; of about 31.3&#xb1;1&#xb0; to a first peak at 2&#x3b8; of about 19&#xb1;1&#xb0; in X-ray diffraction spectra, as analyzed by X-ray diffraction.

Lithium cobalt oxide for a lithium secondary battery and lithium secondary battery comprising positive electrode including the same

A rechargeable lithium battery including a negative electrode; a positive electrode including a positive active material; and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes a non-aqueous organic solvent, a lithium salt, a first additive including a compound represented by one of Chemical Formulae 1 to 4 and a second additive including a compound represented by Chemical Formula 5 or Chemical Formula 6, or a combination thereof, the positive active material includes a compound that includes about 70 mol % or greater of Ni based on the total mole number of all metal elements except for Li, 

Rechargeable lithium battery

A composite positive active material includes a lithium nickel cobalt aluminum composite oxide. A full width at half maximum (FWHM) of a peak of a (104) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less and an FWHM of a peak of a (108) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less, the peaks being obtained by X-ray diffraction analysis using a CuK&#x3b1; X-ray. A method of preparing the composite positive active material, and a lithium secondary battery including a positive electrode including the composite positive active material are disclosed.

Composite positive active material, method of preparing the same, and lithium secondary battery including positive electrode including the same

Provided are a cobalt oxide (CoO) for a lithium secondary battery, having an average particle diameter (D50) of about 14 &#x3bc;m to about 19 &#x3bc;m and a tap density of about 2.1 g/cc to about 2.9 g/cc, a method of preparing the cobalt oxide, a lithium cobalt oxide for a lithium secondary battery prepared from the cobalt oxide, and a lithium secondary battery including a cathode including the lithium cobalt oxide.

Cobalt oxide for lithium secondary battery, preparing method thereof, lithium cobalt oxide for lithium secondary battery formed from the cobalt oxide, and lithium secondary battery including positive electrode comprising the lithium cobalt oxide

Cobalt oxide for lithium secondary battery, preparing method thereof, lithium cobalt oxide formed from the cobalt oxide, and lithium secondary battery having positive electrode including the lithium cobalt oxide

The present disclosure relates to a cathode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery comprising same, the cathode active material comprising a lithium-nickel compound oxide, wherein a c-axis lattice parameter of a unit lattice of the lithium-nickel compound oxide satisfies Formula 1:14.1720 &#x212b;A&#x2264;c&#x2264;14.1750 &#x212b;A&#x2003;&#x2003;[Formula 1]

Cathode active material for lithium secondary battery, method for producing same, and lithium secondary battery comprising same

A positive active material including a core including a compound capable of reversibly intercalating and deintercalating lithium and LiNaSOthat is coated on at least a part of a surface of the core or that blends with the core.

Method of manufacturing positive material

A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal oxide represented by LiNiMOand a lithium-containing oxide on a surface of the lithium nickel-based metal oxide. In the formula LiNiMO, M is one or more of Co, Mn, Al, Mg, Ti, Zr, or a combination thereof, 0&#x3c;x&#x3c;1.1, and 0&#x2264;y&#x3c;0.5.

Positive active material including lithium nickel-based metal oxide, method of preparing the same, and rechargeable lithium battery including the same

A positive electrode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery, the positive electrode active material including nickel, cobalt, and manganese, wherein the positive electrode active material has a core part and a surface part, an amount of manganese in the core part and the surface part is higher than 25 mol %, and amounts of nickel and cobalt in the positive electrode active material vary such that a concentration gradient of the nickel and the cobalt in a direction from the core part to the surface part is present in the positive electrode active material.

Positive electrode active material for lithium secondary battery, preparing method thereof, and lithium secondary battery including positive electrode including the same

A positive electrode active material includes a lithium composite oxide and a zirconium oxide coating layer and a lithium zirconium oxide coating layer that are in a form of sequential layers on the lithium composite oxide.

Positive electrode active material, preparing method thereof, and lithium secondary battery including positive electrode comprising the positive electrode active material

Provided is a lithium cobalt composite oxide for a lithium secondary battery represented by Formula 1 below and having a polycrystalline state, a method of preparing the same, a positive electrode for a lithium battery including the lithium cobalt composite oxide, and a lithium secondary battery including a positive electrode, which includes the lithium cobalt composite oxide.LiCoO&#x2003;&#x2003;Formula 1In Formula 1, a is an integer from 0.9 to 1.1, b is an integer from 0.980 to 1.0000, and c is an integer from 1.9 to 2.1. Also included is a method of manufacture therefor.

Lithium cobalt composite oxide for lithium secondary battery, preparation method thereof, and lithium secondary battery including positive electrode including lithium cobalt composite oxide

A positive active material represented by Formula 1 and a lithium secondary battery having a positive electrode that includes the positive active material are provided:LiANiCoMnO&#x2003;&#x2003;Formula 1

Positive active material and lithium secondary battery including positive electrode that includes the positive active material

Provided are a positive active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode. The positive active material includes lithium cobalt oxide containing a metal element, and the lithium cobalt oxide containing a metal element has a ratio of a peak intensity of the O3 phase to a peak intensity of the H1-3 phase, I/I, that is greater than 1 in a X-ray diffraction (XRD) analysis spectrum using Cu-K&#x3b1; radiation. Accordingly, a lithium secondary battery including the positive active material may have improved lifespan characteristics even at a high voltage.

Positive active material, positive electrode including the same, and lithium secondary battery including the positive electrode

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Yongin-si, South Korea

Dohyung Park