Samsung Sdi Co., Inc.

Minhan Kim

Dohyung Park

Jihyun Kim

Wooyoung Yang

Jinhwa Kim

Dongjin Kim

KyoungHyun Kim

Donggyu Chang

ILseok Kim

Gyuran Jeon

Jeonjin Choi

Jihyun Seog

Jungsue Jang

Seonyoung Kwon

Joongho Moon

Yumi Song

Kiyong Ahn

Youngjoo Chae

Donghyun Kil

Jeuk Ha

Jinyoung Kim

Aram Choi

Jaeha Shim

Joong-Ho Moon

Sun-Ho Kang

Juhyeong Han

Haneol Park

Mingzi Hong

Ickkyu Choi

Soonrewl Lee

Young Jin Park

Daehoe Lee

Junseok Park

Yuntaek Oh

YoungJin Park

Jungwoo Son

Jongsan Im

Okgyu Lim

Ilseok Kim

Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single particle form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.

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

Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single crystal form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.

The application relates to a positive active material precursor including a transition metal composite oxide precursor. The transition metal composite oxide precursor exhibits a peak full width at half maximum of a (200) plane (2θ=about 42° to about 44°) in X-ray diffraction analysis in a range of about 0.3° to about 0.5°. The application also relates to a positive active material using the precursor, a method of preparing the same, and a positive electrode and a rechargeable lithium battery including the same.

Positive active material precursor, positive active material, method of preparing the same, positive electrode including the same and rechargeable lithium battery including the same

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

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Yongin-si, South Korea

Minhan Kim