Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Andrei Kapylou

Jinhwan Park

Jayhyok Song

Sungjin Ahn

Byongyong Yu

Donghan Kim

Yong-Chan You

Jay-Hyok Song

Sun-Ho Kang

Byungjin Choi

Chang-Wook Kim

Donghee Yeon

Jun-Seok Park

Byong-Yong Yu

Sol Choi

Kwangjin Park

Dongjin Ham

Youhwan Son

Jinsu Ha

San Moon

Chang-wook Kim

Evgeniya Matulevich

A cathode active material includes a secondary particle including an aggregate of a plurality of primary particles, wherein the secondary particle includes a nickel-containing lithium transition metal oxide having a layered crystal structure, wherein the plurality of primary particles includes a first primary particle having a size greater than about 400 nanometers, a second primary particle having a size less than about 150 nanometers, and a third primary particle having a size of about 150 nanometers to about 400 nanometers, wherein the third primary particle has a area of greater than or equal to about 80% of a total area of the plurality of primary particles, and wherein the secondary particle has a porosity of less than or equal to about 10% of a total area of the cathode active material.

Cathode active material precursor, cathode active material formed therefrom, method of preparing the cathode active material, and cathode and lithium battery each including the cathode active material

In an aspect, a positive active material for a rechargeable lithium battery including overlithiated layered oxide (OLO), a method of preparing the same, and a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same is disclosed.

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

A positive active material includes an over-lithiated lithium transition metal oxide having a core-shell structure, wherein a shell layer of the core-shell structure includes a metal cation.

Positive active material including a shell including a metalcation, manufacturing method thereof, and positive electrode and lithium battery including the positive active material

A positive active material including: a core including an overlithiated lithium transition metal oxide, and a coating layer which is disposed on at least a portion of a surface of the core, the coating layer including a polymer having an oxidation potential of about 4.4 volts to about 4.7 volts versus lithium metal. Also a manufacturing method thereof, and a positive electrode and a lithium battery including the positive active material.

Positive active material, manufacturing method thereof, and positive electrode and lithium battery including the material

A composite cathode active material includes: a first metal oxide including a plurality of layered crystalline phases comprising a first layered crystalline phase and a second layered crystalline phase, wherein the first and second layered crystalline phases have a different compositions than each other, and a second metal oxide different from the first metal oxide and including a composite crystalline phase, that is different from the first metal oxide, wherein the second metal oxide is represented by Formula 1, wherein at least a portion of the second metal oxide is disposed on a first layered crystalline phase of the plurality of layered crystalline phases of the first metal oxide, and wherein the first layer crystalline phase is in a space group of R-3m:LiMO&#x2003;&#x2003;Formula 1

Composite cathode active material, cathode and lithium battery including the composite cathode active material, and method of preparing the composite cathode active material

A composite positive active material includes: a composite including a first metal oxide represented by Formula 1 and having a layered structure, and a second metal oxide having at least one crystal structure selected from a layer structure, a perovskite structure, a rock salt structure, and a spinel structure, wherein a content of the second metal oxide is greater than 0 and equal to or less than 0.2 moles, per mole of the composite,LiNiMOM&#x2003;&#x2003;Formula 1wherein, in Formula 1, Mis at least one element selected from Group 4 to Group 14 of the Periodic Table of the Elements; Mis at least one element selected from F, S, Cl, and Br; 0.7&#x2264;x&#x3c;1; and 0&#x2264;e&#x3c;1. Also, a positive electrode including the composite positive active material, and a lithium battery including the positive electrode.

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

A positive active material includes an overlithiated lithium transition metal oxide including: a metal cation and a LiMOphase, wherein M is at least one metal selected from a Period 4 transition metal having an average oxidation number of +4 and a Period 5 transition metal having an average oxidation number of +4, and wherein an amount of the LiMOphase is less than or equal to about 20 mole percent, based on 1 mole of the overlithiated lithium transition metal oxide.

Positive active material, positive electrode, and lithium battery containing the positive active material

A composite positive active material includes a composite, the composite including: a first metal oxide having a layered crystal structure; and a second metal oxide having a rocksalt crystal structure, wherein the composite includes at least one doping element selected from Group 1 and Group 2 of the Periodic Table wherein the doping element is not Li.

Composite positive active material, positive electrode and lithium battery containing the composite positive active material

A composite positive electrode active material including: an overlithiated layered oxide (OLO) including vanadium (V) and magnesium (Mg), wherein the vanadium and magnesium have a molar ratio of about 1:2. Also a method of manufacturing the composite positive electrode active material, a positive electrode including the composite positive electrode, and a lithium battery including the positive electrode.

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

A positive active material, a method of preparing the same, and a lithium battery including the positive active material, the positive active material including a core, the core including an overlithiated lithium transition metal oxide; and a coating layer on the core, the coating layer including LiVO.

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

Provided are a method of manufacturing a composite positive active material, a composite positive active material manufactured by the method, and a positive electrode and a lithium battery including the composite positive active material. The method may include acid-treating an overlithiated lithium transition metal oxide; and applying fluorine onto the acid-treated overlithiated lithium transition metal oxide using a fluorine compound.

Method of manufacturing composite positive active material, composite positive active material manufactured thereby, and positive electrode and lithium battery including the composite positive active material

An active material for a lithium secondary battery, a method of manufacturing the same, an electrode including the active material, and a lithium secondary battery including the electrode, the active material including a lithium composite oxide represented by the following Formula 1:Li[LiNiCoMn]OF.&#x2003;&#x2003;[Formula 1]

Active material for a lithium secondary battery, method of manufacturing the same, electrode including the active material, and lithium secondary battery including the electrode

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Yongin-si, South Korea

Andrei Kapylou