Samsung Sdi Co., Inc.

Ulsan National Institute of Science and Technology

Unist (ulsan National Institute of Science and Technology )

Unist, Inc.

Kwanghwan Cho

Jinhwa Kim

Kihyun Kim

Jongmin Kim

Jaephil Cho

Pilsang Yun

Donggyu Chang

Jangsuk Hyun

Jaeho Lee

Seonyoung Kwon

Jiyoon Kim

Yumi Song

Joongho Moon

Mingzi Hong

Soohyeon Kim

Soonbong Choi

Moonsu Yoon

Sanghoon Kim

Sol Choi

Dohyung Park

ILseok Kim

Eunsung Lee

Hyejung Kim

Ilseok Kim

This application relates to a composite positive electrode active material for a lithium secondary battery. The composite positive electrode active material includes a nickel-based active material and a cobalt-boron compound-containing coating layer formed on a surface of the nickel-based active material. The application also relates to a method of preparation of the composite positive electrode active material. The application further relates to a lithium secondary battery including a positive electrode containing the composite positive electrode active material.

Composite positive electrode active material for lithium secondary battery, preparation method thereof, and lithium secondary battery including positive electrode including the same

Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.

Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material

The present disclosure relates to a positive electrode active material, a preparing method therefor, and a lithium secondary battery including same. A positive electrode active material according to an embodiment comprises: a core including a lithium nickel composite oxide represented by Chemical Formula 1; and a surface layer present on the core and including at least one of a water-soluble ammonium-based organic compound and a water-soluble amine-based organic compound. The details of Chemical Formula 1 are as defined in the specification.

Positive electrode active material, preparing method therefor, and lithium secondary battery including same

A nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material, the nickel-based active material comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.

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

A composite positive active material includes a lithium nickel cobalt aluminum composite oxide. A full width at half maximum (FWHM) of a peak of a (104) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less and an FWHM of a peak of a (108) plane of the lithium nickel cobalt aluminum composite oxide is 0.15 or less, the peaks being obtained by X-ray diffraction analysis using a CuK&#x3b1; X-ray. A method of preparing the composite positive active material, and a lithium secondary battery including a positive electrode including the composite positive active material are disclosed.

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

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 composite cathode active material, including a nickel-based lithium transition metal oxide secondary particle, the nickel-based lithium transition metal oxide secondary particle including a coating layer containing lithium and cobalt on a surface of a primary particle of the secondary particle.

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

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Yongin-si, South Korea

Kwanghwan Cho