Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Ryoung-hee Kim

Young-min Choi

Min-sang Song

Gue-sung Kim

Won-chang Choi

So-Yeon Kim

Seung-sik Hwang

Jae-man Choi

Moon-seok Kwon

Kyu-sung Park

Sang-kook Mah

Jeong-kuk Shon

Woon-jung Paek

A composite cathode active material including an overlithiated metal oxide having a layered structure, a material having an olivine structure, and one or more of: an inorganic material, and nitrogen atoms doped in the material having an olivine structure. The inorganic material includes a nitride or carbide of a non-transition metal. The composite cathode active material may be included in a cathode, and the cathode may be included in a lithium battery.

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

An electrode active material includes a core capable of intercalating and deintercalating lithium; and a surface treatment layer disposed on at least a portion of a surface of the core, wherein the surface treatment layer includes a lithium-free oxide having a spinel structure, and an intensity of an X-ray diffraction peak corresponding to impurity phase of the lithium-free oxide, when measured using Cu&#x2014;K&#x3b1; radiation, is at a noise level of an X-ray diffraction spectrum or less.

Electrode active material, preparation method thereof, and electrode and lithium battery containing the same

A lithium titanium oxide spinel having a ratio of FWHM1/FWHM2 at a spinning rate of about 5 kHz to about 50 kHz of about 1.70 or less, wherein FWHM1 is a full width at half maximum of aLi peak present about &#x2212;10 parts per million to about +10 parts per million in a solid state nuclear magnetic resonance spectrum of the lithium titanium oxide, FWHM2 is a full width at half maximum of aLi peak present about &#x2212;10 parts per million to about +10 parts per million in a solid state nuclear magnetic resonance spectrum of a lithium chloride standard reagent, and FWHM1 and FWHM2 are measured at the same spinning rate.

Lithium titanium oxide, method of preparing the same, negative electrode including the same, and lithium battery including the negative electrode

A composite cathode active material, a cathode and a lithium battery that include the composite cathode active material, and a method of preparing the composite cathode active material, the composite cathode active material including a compound having an olivine crystal structure; and an inorganic material, the inorganic material including at least one selected from the group of a metal carbonitride and a carbonitride.

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

A composite nitride, a method of preparing the composite nitride, an electrode active material including the composite nitride, an electrode including the electrode active material, and a lithium secondary battery including the electrode, the composite nitride including a core material including a bronze-phase titanium oxide; and a nitrogen atom doped on at least part of the core material.

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

An anode active material for a lithium rechargeable battery, the anode active material including: a base material which is alloyable with lithium and a metal nitride disposed on the base material.

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Yongin-si, South Korea

Ryoung-hee Kim