Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Chonnam National University

Kwangjin Park

Donghan Kim

Byungjin Choi

Sukgi Hong

Junho Park

Youhwan Son

Jaegu Yoon

Dongjin Ham

Jinhwan Park

Jaeman Choi

Jaejun Chang

Jeongkuk Shon

Sangmin Ji

Minsang Song

Changhoon Jung

Jinsu Ha

Dongsu Ko

Kyoungmin Min

Wonseok Chang

Ryounghee Kim

Seoksoo Lee

Kanghee Lee

Byongyong Yu

Sungjin Kim

Jayhyok Song

Andrei Kapylou

Sungjin Ahn

Donghee Yeon

Seongyong Park

Dongwook Han

Dongwook Shin

Guesung Kim

Jinseok Hong

San Moon

JunHo Park

Jaekook Kim

Jihyeon Gim

A composite cathode active material and a cathode and a lithium battery including the composite cathode active material. The composite cathode active material has a core including a plurality of primary particles including a nickel-containing first lithium transition metal oxide having a layered crystal structure; a grain boundary disposed between adjacent primary particles of the plurality of primary particles; and a shell on the core, the shell including a second lithium transition metal oxide having a spinel crystal structure, wherein the grain boundary includes a first composition having a spinel crystal structure.

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

A composite cathode active material including: a secondary particle including a plurality of primary particles including a lithium transition metal oxide having a layered crystal structure; and a coating layer disposed on a surface of the secondary particle and between the primary particles of the plurality of primary particles, wherein the coating layer includes a lithium cobalt composite oxide having a spinel crystal structure, and wherein the lithium cobalt composite oxide includes cobalt (Co) and a Group 2 element, a Group 12 element, a Group 13 element, or a combination thereof.

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

A composite cathode active material for a lithium battery including: a lithium composite oxide; and a coating layer including a metal oxide and a lithium fluoride, (LiF) wherein the coating layer is disposed on at least a portion of a surface of the lithium composite oxide.

Composite cathode active material for lithium battery, cathode for lithium battery including the same, and lithium battery including the cathode

A positive active material including: a core comprising a metal oxide, a non-metal oxide, or a combination thereof capable of intercalation and deintercalation of lithium ions or sodium ions; and a non-conductive carbonaceous film including oxygen on at least one portion of a surface of the core; a lithium battery including the positive active material; and a method of manufacturing the positive active material.

Cathode active material, secondary battery comprising the same, and method of manufacturing the positive active material

A composite cathode active material, and a cathode and a lithium battery each including the composite cathode active material. The composite cathode active material includes: a core including a first lithium transition metal oxide represented by Formula 1,LiMOwherein, in Formula 1, M includes Ni and at least one non-nickel Group 4 to Group 13 element, a content of Ni is about 70 mol % or greater, based on a total content of M, 0.9&#x2264;a&#x2264;1.1, and wherein the first lithium transition metal oxide has a layered crystal structure belonging to an Rm space group; and a shell on a surface of the core, the shell having a spinel crystal structure and including a dopant.

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

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

A composite cathode active material, includes a first metal oxide having a first layered crystal structure; and a second metal oxide having a second layered crystal structure, wherein the second metal oxide includes a layered double oxide (LDO). Also a cathode and a lithium battery including the composite cathode active material.

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

A co-precipitation reactor for manufacturing a positive electrode active material precursor for a secondary battery, the co-precipitation reactor including a reaction chamber having a plurality of suppliers configured to direct a reaction material and a pH adjusting material into the reaction chamber, a stirrer configured to be disposed in the reaction chamber, a drive motor configured to rotate the stirrer, a stirring shaft configured to receive power from the drive motor and rotate the stirrer, a first heater configured to heat an outside of the reaction chamber to heat the reaction material and the pH adjusting material, and a second heater configured to heat an inside of the reaction chamber to heat the reaction material and the pH adjusting material.

Co-precipitation reactor and method of manufacturing material precursor for secondary battery using the same

A composite cathode active material for a lithium battery, the composite cathode active material including: a lithium composite oxide; and a coating layer disposed on at least a portion of the lithium composite oxide and including a composite including ZrPOand LiZr(PO), wherein the composite including ZrPOand LiZr(PO)is a reaction product of an acid treated a zirconium precursor, a phosphorus precursor, and the lithium composite oxide.

A cathode active material includes a core capable of intercalating and deintercalating lithium ions; and a coating layer on at least a portion of the core, wherein the coating layer includes a composite including a metal oxide compound and a phosphate compound, the metal oxide compound is at least one compound selected from a lithium metal oxide and a metal oxide, the phosphate compound is at least one compound selected from a lithium phosphate, a lithium metal phosphate, and a metal phosphate, and a weight ratio of the metal oxide compound to the phosphate compound is from greater than 0 to about 1.

Cathode active material, cathode and lithium battery including the same, and method of preparing the cathode active material

A sodium manganese composite oxide represented by Formula 1:NaMaMnMbO&#x2003;&#x2003;Formula 1wherein, 0.2&#x2266;x&#x2266;1, 0&#x3c;y&#x2266;0.2, 0&#x3c;z&#x2266;1, 0&#x2266;v&#x3c;1, 0&#x3c;z+v&#x2266;1, &#x2212;0.3&#x2266;d&#x3c;1, Ma is an electrochemically inactive metal, and Mb is different from Ma and Mn, and is at least one transition metal selected from elements in Groups 4 to 12 of the periodic table of the elements.

Sodium manganese composite oxide and electrode and sodium secondary battery using the same

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Seongnam-si, South Korea

Kwangjin Park