Samsung Sdi Co., Inc.

Samsung Display Devices Co., Ltd.

Yong-Chan You

Ji-Hyun Kim

Chang-Wook Kim

Jay-Hyok Song

Do-Hyung Park

Gyeong-Jae Heo

Sun-Hwa Kwon

Sun-Ho Kang

Jun-Seok Park

Yoon-Chang Kim

Young-Hun Lee

Ick-Kyu Choi

Seon-Young Kwon

Sang-In Park

Andrei Kapylou

Hyun-Deok Lee

Sang-Hyuk Lee

Young-ki Kim

Min-Han Kim

Ui-Song Do

Yu-Mi Song

Han-Eol Park

Min-Ju Kim

Il Yu

Young-Suk Cho

Kyu-Chan Park

Byung-Kyun Kim

Hui-Young Ku

Yoo-Jung Lee

Ki-Hyun Kim

Sung-Ho Choi

Yong-Chul Park

Young-Ki Kim

Ji-hyun Kim

Jae-Woo Bae

Mi-Ran Song

Mi-ran Song

Ha-Young Lee

Jin-Hyoung Seo

Sang-Woo Cho

Dae-Hoe Lee

Evgeniya Matulevich

Byong-Yong Yu

Deok-Hyun Kim

Sang-Hoon Shin

Sang-Hyuck Ahn

Sol Choi

Su-Kyung Lee

Kyoung-Hyun Kim

Joong-Ho Moon

Jae-Won Choi

Hyun-Joo Je

Chang-wook Kim

Xianhui Meng

Young-Jin Choi

Jae-Hong Lim

Sang-Pil Kim

A positive active material for a rechargeable lithium battery includes a compound represented by Chemical Formula 1, LiNiCoMeMMOwherein, 0.9&#x2264;a&#x2264;1.1, 0.7&#x2264;x&#x2264;0.93, 0&#x3c;y&#x2264;0.3, 0&#x3c;z&#x2264;0.3, 0.001&#x2264;k&#x2264;0.006, 0.001&#x2264;p&#x2264;0.005, x+y+z+k+p=1, Me is Mn or Al, Mis a divalent element, and Mis a tetravalent element.

Positive active material for rechargeable lithium battery and rechargeable lithium battery including same

A positive active material, a method of preparing the positive active material, a positive electrode including the positive active material, and a lithium battery including the positive active material are disclosed. The positive active material includes a core and a coating layer on the core. The coating layer includes a sulfur component. When a binding energy peak of the sulfur is measured by X-ray photoelectron spectroscopy (XPS), the binding energy peak is observed at about 165 eV to about 168 eV, and the stability of the positive active material may be improved due to the coating layer. Accordingly, the lifespan properties of a lithium battery including the positive active material may be improved.

Positive active material, positive electrode, and lithium battery including the same and method of manufacture thereof

A positive active material for a rechargeable lithium battery includes a core including a compound represented by Chemical Formula 1 and a structure-stabilizing compound on a surface of the core. The structure-stabilizing compound includes an Al compound or a Co compound. Chemical Formula 1 is LiNiCoMeMOFwhere 0.9&#x2264;a&#x2264;1.1, 0.7&#x2264;x&#x2264;0.93, 0&#x3c;y&#x2264;0.3, 0&#x3c;z&#x2264;0.3, 0&#x2264;k&#x2264;0.005, x+y+z+k=1, 0&#x2264;p&#x2264;0.005, Me is Mn or Al, and M1 is Mg, Ba, B, La, Y, Ti, Zr, Mn, Si, V, P, Mo, W, or a combination thereof.

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 composite cathode active material, a cathode including the same, a lithium battery including the cathode, and preparation method thereof are disclosed. The composite cathode active material includes: a core capable of intercalating and deintercalating lithium; and a crystalline coating layer disposed on at least part of a surface of the core, wherein the coating layer include a metal oxide.

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

The present invention provides a positive active material including a lithium-containing compound represented by the following Chemical Formula 1 and a rechargeable lithium battery including the positive active material.LiFeMM'PO.&#x2003;&#x2003;Chemical Formula 1

Positive active material and rechargeable lithium battery including same

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

Disclosed are a negative electrode for a rechargeable lithium battery that includes a plurality of non-sheet-shaped graphite particles, at least one silicon-based particle in a void formed by assembling the non-sheet-shaped graphite particles, and a sheet-shaped graphite powder between the non-sheet-shaped graphite particles, the void, or both thereof, wherein a size of the silicon particle is smaller than a length of the longest axis of the sheet-shaped graphite powder.

Negative electrode for rechargeable lithium battery, method of manufacturing same, and rechargeable lithium battery including same

A positive active material for a rechargeable lithium battery includes a core including an overlithiated oxide represented by Chemical Formula 1, a first coating layer on the core and including a compound having a spinel structure, and a second coating layer on the first coating layer and including a compound represented by Chemical Formula 2. The compound having a spinel structure shows a peak between about 2.6 V and about 2.7 V in a graph of differential capacity dQ/dV vs. voltage, where the voltage is between about 4.7 V and about 2.5 V. In Chemical Formula 1, 0&#x3c;x&#x3c;1, 0&#x3c;a&#x3c;1, 0&#x3c;b&#x3c;1, 0&#x3c;c&#x3c;1, and a+b+c=1. In Chemical Formula 2, 0&#x2266;d&#x3c;1 and 0&#x3c;e&#x2266;1.xLiMnO.(1&#x2212;x)LiNiCoMnO,&#x2003;&#x2003;Chemical Formula 1LiTiO.&#x2003;&#x2003;Chemical Formula 2

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

A composite precursor represented by Formula 1, a composite prepared therefrom represented by Formula 2, a method of preparing a composite precursor and a composite, a positive electrode for lithium secondary battery including the same, and a lithium secondary battery employing the same.MnO-M(OH)&#x2003;&#x2003;Formula 1wherein in Formula 1, 0&#x3c;a&#x2266;0.8, 0.2&#x2266;b&#x3c;1and M is at least one metal selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron, (Fe), cobalt (Co), nickel (Ni), copper (Cu), aluminum (Al), magnesium (Mg), zirconium (Zr), and boron (B)LiMnO-LiMO&#x2003;&#x2003;Formula 2wherein in Formula 2, 0&#x2266;a&#x2266;0.6, 0.4&#x2266;b&#x2266;11.0&#x2266;y&#x2266;1.05,and M is at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Mg, Zr, and B.

Composite precursor, composite prepared therefrom, a method of preparing a composite precursor and a composite, positive electrode for lithium secondary battery including the same, and lithium secondary battery employing the same

Provided are a positive active material that has a decreased amount of Li-containing impurities that remain on a lithium transition metal composite oxide surface to decrease an amount of gas generation and has improved lifespan properties, a method of preparing the same, a positive electrode for a lithium secondary battery including the positive active material, and a lithium secondary battery including the same.

Positive active material, preparing method thereof, positive electrode for lithium secondary battery including the same, and lithium secondary battery employing the same

A composite positive active material including an over-lithiated lithium transition metal oxide, the over-lithiated transition metal oxide including a compound represented by Formula 1 or Formula 3: [Formula 1] xLiM&#x2033;MO-(1-x)LiM'O, [Formula 3] xLiM&#x2033;MO-x&#x2032;LiM&#x2032;O-x&#x2033;LiM&#x2032;&#x2033;O, x+x&#x2032;+x&#x2033;=1, 0&#x3c;x&#x3c;1, 0&#x3c;x&#x2032;&#x3c;1, 0&#x3c;x&#x2033;&#x3c;1, 0&#x3c;y&#x2266;1, and 0&#x2266;d&#x2266;0.33, is disclosed. A positive electrode and a lithium battery containing the composite positive active material, and a method of preparing the composite positive active material are also disclosed.

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

A positive active material, a positive electrode and a lithium battery containing the positive active material, and a method of manufacturing the positive active material are disclosed. The positive active material includes: a positive active material core particle for intercalating and deintercalating lithium ions; and a coating layer at least partially surrounding the positive active material core particle and including a ceramic composite represented by Formula 1.LiLaZrMO&#x2003;&#x2003;Formula 1 In Formula 1, M comprises at least one selected from aluminum (Al), titanium (Ti), scandium (Sc), vanadium (V), yttrium (Y), niobium (Nb), hafnium (Hf), tantalum (Ta), silicon (Si), gallium (Ga), and germanium (Ge), and &#x2212;1&#x2266;a&#x2266;1, 0&#x2266;b&#x2266;2, 0&#x2266;c&#x2266;2, 0&#x2266;d&#x2266;2, and 0&#x2266;e&#x2266;1.

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

In an aspect, a positive active material for a rechargeable lithium battery that includes a lithium composite oxide including a Fe-containing compound phase and a Li-containing compound phase, a method of preparing the same, and a rechargeable lithium battery including the same are provided.

Growing community of inventors

Yongin-si, South Korea

Yong-Chan You