Samsung Sdi Co., Inc.

Samsung Display Devices Co., Ltd.

Chang-Wook Kim

Yong-Chan You

Ji-Hyun Kim

Jun-Seok Park

Jae-Myung Kim

Jay-Hyok Song

Sun-Ho Kang

Andrei Kapylou

Han-Eol Park

Sang-Woo Cho

Hyun-Joo Je

Chun-Gyoo Lee

Kwi-Seok Choi

Byung-Joo Chung

Joong-Woo Nam

Evgeniya Matulevich

Hyun-Jee Lee

Soo-Youn Park

Seung-Hoon Choi

Yoon-Chang Kim

Young-Ki Kim

Sang-Jin Lee

Sung-Hee Cho

Jong-Seo Choi

Do-Hyung Park

Soo-Jin Park

Young-Hun Lee

Dae-Yup Shin

Ick-Kyu Choi

Sang-jin Lee

Jong-Hwan Park

Seon-Young Kwon

Min-Han Kim

Soon-Rewl Lee

Sang-In Park

Kyoung-Hyun Kim

Joong-Ho Moon

Dong-Hyun Jung

Young-Chul Choi

Jeong-Hoon Kim

Byong-Yong Yu

Joong-woo Nam

Eun-Mi Lee

Ji-Soon Ihm

Ji-Yeon Jang

Soon-Kie Hong

Kyu-Suk Han

The present invention relates to a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes: a current collector; and a positive electrode active material positioned on at least one surface of the active material layer current collector. The positive electrode active material layer includes a small particle size active material having an average particle diameter D50 of 2 &#x3bc;m to 4 &#x3bc;m and a first coating layer positioned at a surface thereof, and a large particle size active material having an average particle diameter D50 of 17 &#x3bc;m to 21 &#x3bc;m and a second coating layer positioned at the surface thereof.

Positive electrode for rechargeable lithium battery and rechargeable lithium battery including the same

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 positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The positive active material includes a core including a lithium intercalation compound and a crystalline coating compound on a surface of the core and including a crystalline aluminum hydroxide, a crystalline aluminum oxyhydroxide, or a combination thereof.

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

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

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

Provided are a method of preparing a cathode active material, a composite cathode active material, and a cathode and a lithium battery containing the composite cathode active material. The method includes mixing a transition metal source and a reducing agent to prepare a cathode active material precursor; and mixing and calcining the cathode active material precursor to prepare a lithium transition metal oxide, wherein a supplied amount of the reducing agent is about 0.003 mole/hr or less with respect to 1 mole/hr of a supplied amount of the transition metal source.

Method of preparing composite cathode active material, composite cathode active material, and cathode and lithium battery containing the composite cathode active material

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

A composite cathode active material represented by the formula (1&#x2212;x)LiM1M2M3OLiM4O, wherein M1, M2, and M3 are each independently selected from the group 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); M4 is selected from the group consisting of manganese (Mn), titanium (Ti0, and zirconium (Zr); M1, M2, and M3 are different from one another; and 0.5&#x3c;x&#x3c;1, 0&#x3c;a&#x3c;1, 0&#x3c;b&#x3c;1, 0&#x3c;c&#x3c;1, a+b+c=1, and 0&#x3c;[(1&#x2212;x)&#xd7;a]/[(1&#x2212;x)&#xd7;c+x]&#x2266;0.14.

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

An active material for a lithium secondary battery, a method of manufacturing the same, an electrode including the active material, and a lithium secondary battery including the electrode, the active material including a lithium composite oxide represented by the following Formula 1:Li[LiNiCoMn]OF.&#x2003;&#x2003;[Formula 1]

Active material for a lithium secondary battery, method of manufacturing the same, electrode including the active material, and lithium secondary battery including the electrode

A positive active material for a rechargeable lithium battery includes a nickel-based composite oxide represented by the following Chemical Formula 1, wherein the nickel-based composite oxide includes an over lithiated oxide and non-continuous portions of a lithium nickel cobalt manganese oxide on a surface of the over lithiated oxide.LiNiCoMnO&#x2003;&#x2003;Chemical Formula 1

A negative electrode for a lithium rechargeable battery includes a current collector, and a negative active material layer on the current collector, the negative active material layer including a silicon-based active material, a carbon-based active material, and an aqueous additive including an aqueous binder and an agent for increasing viscosity, the silicon-based active material being coated with an organic binder, wherein the aqueous additive is between portions of the silicon-based active material, between portions of the carbon-based active material, or between the silicon-based active material and the carbon-based active material.

Negative active for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same

Growing community of inventors

Yongin-si, South Korea

Chang-Wook Kim