Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Postech Academy-industry Foundation

Byungjin Choi

Jinhwan Park

Sukgi Hong

Byongyong Yu

Donghee Yeon

Jayhyok Song

Kwangjin Park

Donghan Kim

Junho Park

Jinsu Ha

Ryounghee Kim

Sungjin Ahn

Youhwan Son

Youngsoo Kim

Andrei Kapylou

Changhoon Jung

Yoonsok Kang

Jaegu Yoon

Dongjin Ham

Sangil Han

Dongwook Shin

San Moon

Dongsu Ko

Junghwa Lee

Byoungwoo Kang

Kyoungmin Min

Jeongho Lee

Jongmin Kim

Insun Park

Pilsang Yun

Kanghee Lee

Heechul Jung

Suk-gi Hong

Minsik Park

Seongyong Park

Younggyoon Ryu

Jaeduck Jang

Soohwan Sul

Euiseong Moon

Junyoung Mun

A composite cathode active material for an all-solid-state battery including a sulfide solid electrolyte, a preparation method thereof, a cathode layer for an all-solid-state battery, and an all-solid-state battery including the cathode layer, the composite cathode active material including a secondary particle including a plurality of primary particles; and a buffer layer on a surface of the secondary particle, wherein the secondary particle includes a nickel lithium transition metal oxide represented by Formula 1 (LiNiMO), the buffer layer includes a first buffer layer adjacent to a surface of the secondary particle and including an oxide represented by Formula 2 (LiAO); and a second buffer layer including an oxide represented by Formula 3 (LiEO).

Composite cathode active material for all-solid-state battery, preparation method thereof, cathode layer for all-solid-state battery, and all-solid-state battery including the cathode layer

A positive active material for an all-solid secondary battery, an all-solid secondary battery including the same, and a method of manufacturing the positive active material for an all-solid secondary battery, the positive active material including a secondary particle including a plurality of primary particles; and a buffer layer on a surface of the secondary particle; wherein the secondary particle includes a nickel lithium transition metal oxide represented by Formula 1, the buffer layer includes a copper compound represented by Formula 2,LiNiMOA  <Formula 1>LiCuX.  <Formula 2>

Positive active material for all solid secondary battery, and all solid secondary battery including the same

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 positive active material represented by Formula 1,LiNiCOMnMO  Formula 1wherein, in Formula 1, M is zirconium (Zr), aluminum (Al), rhenium (Re), vanadium (V), chromium (Cr), iron (Fe), gallium (Ga), silicon (Si), boron (B), ruthenium (Ru), titanium (Ti), niobium (Nb), molybdenum (Mo), magnesium (Mg), or platinum (Pt), 1.1≤a≤1.3, b+c+d+e≤1, 0≤b≤0.3, 0≤c≤0.3, 0<d≤0.6, and 0≤e≤0.1, wherein, through atomic interdiffusion of lithium and the metal, the composite positive active material has a uniform distribution of lithium excess regions and a uniform degree of disorder of metal cations, and the metal cations have a disordered, irregular arrangement at an atomic scale. Also a method of preparing the composite positive active material, a positive electrode including the composite positive active material, and a lithium battery including the positive electrode.

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

A composite cathode active material, a cathode and a lithium battery each including the composite cathode active material, and a method of manufacturing the composite cathode active material. The composite cathode active material includes a core including a plurality of primary particles, and a shell disposed on the core, wherein a primary particle of the plurality of primary particles includes a lithium nickel transition metal oxide, the shell includes a first composition and a second composition, wherein the first composition contains a first metal and the second composition contains a second metal, wherein the first metal includes a metal of Groups 2, 4, 5, and 7 to 15, the second metal includes a metal of Group 3, and the first composition includes a first phase and the second composition includes a second phase that is distinguishable from the first phase.

Composite cathode active material, cathode and lithium battery each containing composite cathode active material, and method of preparing composite cathode active material

A composite cathode active material includes: a core including a plurality of primary particles; and a shell on the core, wherein the primary particles include a first lithium transition metal oxide comprising nickel, the shell includes a first layer and a second layer on the first layer, the first layer includes a first composition containing a first metal, the second layer includes a second composition containing phosphorus, and the first metal includes at least one or more metal, other than nickel, belonging to any of Groups 2 to 5 and Groups 7 to 15 of the Periodic Table of the Elements. Also a cathode, and a lithium battery each including the composite cathode active material, and a method of preparing the composite cathode active material.

Composite cathode active material, cathode and lithium battery each containing composite cathode active material, and preparation method of cathode active material

A composite positive electrode active material includes: a first metal oxide that has a layered structure and is represented by Formula 1; and a second metal oxide that has a spinel structure and is represented by Formula 2, wherein the composite positive electrode active material includes a composite of the first metal oxide and the second metal oxide:LiMO&#x2003;&#x2003;Formula 1LiMeO&#x2003;&#x2003;Formula 2

Composite positive electrode active material, positive electrode including the same, and lithium battery including the positive electrode

A composite positive active material represented by Formula 1,LiNiCoMnMO&#x2003;&#x2003;Formula 1

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

A composite cathode active material includes a secondary particle; and a coating on a surface of the secondary particle, wherein the secondary particle comprises a plurality of primary particles, and the plurality of primary particles include a lithium nickel transition metal oxide having a layered crystal structure; and a grain boundary between primary particles of the plurality of primary particles, the grain boundary including a lithium metal oxide having a crystal structure different from the lithium nickel transition metal oxide having a layered crystal structure, wherein the coating on the surface of the secondary particle includes a metal oxide including cobalt, and a Group 2 element, a Group 12 element, a Group 13 element, or a combination thereof.

Composite cathode active material, cathode and lithium battery each including the same, and method of preparing 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 includes a cathode active material including a lithium transition metal oxide, wherein the lithium transition metal oxide includes nickel and a non-nickel transition metal, and an amount of the nickel in the lithium transition metal oxide is about 50 mole percent or greater with respect to a total number of moles of transition metals in the lithium transition metal oxide, a conducting agent including a linear carbonaceous conducting agent, and a binder, wherein the binder includes a first fluorinated binder not including a polar functional group, a second fluorinated binder including a polar functional group, a first non-fluorinated binder including a cyano group, and a second non-fluorinated binder including a cyanoalkyl group.

Cathode and lithium battery including cathode

A composite cathode active material includes a first cathode active material including a core including a first lithium transition metal oxide represented by Formula 1 and having a first layered crystalline phase that belongs to a R-3m space group; and a coating layer disposed on the core and including a second lithium transition metal oxide having a plurality of layered crystalline phases, wherein each layered crystalline phase of the plurality of layered crystalline phases has a different composition:LiMO&#x2003;&#x2003;Formula 1

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

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Seoul, South Korea

Byungjin Choi