Samsung Sdi Co., Inc.

Seonyoung Kwon

Jinhwa Kim

Yumi Song

Dohyung Park

Jihyun Kim

Kihyun Kim

Jaeho Lee

Minkyu Kim

Kwanghwan Cho

Joongho Moon

Kiyong Ahn

Junseok Park

Minhan Kim

Mingzi Hong

Soonrewl Lee

Jeuk Ha

Soonbong Choi

Daehoe Lee

Soohyeon Kim

Naoyuki Hase

Eunok Oh

Taehee Kwak

Juhyeong Han

Sooyoun Park

KyoungHyun Kim

Jinyoung Kim

Jeonjin Choi

Sung Ho Choo

Youngsun Kong

Youngki Kim

A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.

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

A positive electrode for a rechargeable lithium battery includes a positive active material including small particle diameter monolith particles having a particle diameter of about 1 &#x3bc;m to about 8 &#x3bc;m and including a first nickel-based lithium metal oxide, and large particle diameter secondary particles having a particle diameter of about 10 &#x3bc;m to about 20 &#x3bc;m and including a second nickel-based lithium metal oxide. An X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3. A rechargeable lithium battery includes the positive electrode.

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 positive active material for a rechargeable lithium battery includes nickel-based lithium transition metal oxide secondary particles, in which a plurality of primary particles are aggregated. The primary particles include polycrystalline primary particles composed of 2 to 10 single crystals, and each of the single crystals has a particle diameter of about 0.5 &#x3bc;m to about 3 &#x3bc;m.

Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same

A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.

Composite cathode active material, and cathode and lithium battery comprising composite cathode active material

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

Provided are a composite cathode active material for a lithium ion battery including a nickel-rich lithium nickel-based compound having a nickel content of 50 to 100 mol % based on a total content of transition metals; and a coating film including a rare earth metal hydroxide and disposed on the surface of the nickel-rich lithium nickel-based compound, a manufacturing method therefor, and a lithium ion battery including a cathode including the composite cathode active material.

Composite cathode active material for lithium ion battery, manufacturing method therefor, and lithium ion battery containing cathode comprising 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

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

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Yongin-si, South Korea

Seonyoung Kwon