Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Skhynix Inc.

Korea Advanced Institute of Science and Technology

Young-Ki Kim

Young-Hun Lee

Ick-Kyu Choi

Soon-Rewl Lee

Yong-Chul Park

Na-Ri Park

Yoon-Chang Kim

Jay-Hyok Song

Ki-Taek Kim

Jin-Soo Kim

Seung-Woo Lee

Yu-Mi Song

Jae-Chul Jin

Seung-Jae Lee

Dong-Sik Zang

Chang-Youn Hwang

Soon-Young Yoon

Hee-Won Kang

Ji-Hyun Kim

Jun-Hyung Kim

Jun-Young Lee

Jin-Ho Kim

Jong-Woo Kim

Kitae Kim

Joo-Hyun Lee

Jin-Soo Park

Sung-wook Kang

Hyun-Suk Lee

Dong-Woo Lee

Min-Kyu Kim

Hyun-Seok Lee

Jin-Wook Lee

Jin-woo Cho

Do-Hyung Park

Yong-Chan You

Jung-Woo Kim

Chang-Wook Kim

Song Chong

Hyon-Myong Song

Jeong-Hwan Kim

Young-Kwan Kim

Hong-Moon Chun

Seong-woon Booh

Hyun-Deok Lee

Mi-Ran Song

Chul-Seung Kim

Ji-Hyun Lee

Dong-ok Kwak

Min-Ju Kim

Ickkyu Choi

Soonrewl Lee

Na-Leum Yoo

Soonkie Hong

Mingzi Hong

Youngjoo Chae

Jungjoon Park

Shin-Chul Kang

Bong-Chan Kim

Jae-Min Ahn

Jin-Hyoung Seo

Hong-Kyu Choi

Yong-Wook Hwang

Yoon-Hee Lee

Ki-Duk Jang

Hoon-Soo Park

Sang-Hyun Sung

Sang-Tae Na

Jong-Seok Park

Seon-Hee Shim

Dong-Hwan Yu

Seung-Chang Baek

Kisoo Lee

Hyun-Joo Je

Kyu-Ho Son

Hyerim Lee

Jae-Myong Kim

Soo-Youn Park

Jae-Ohul Jin

Ji-Yeon Jang

Shin-Chul Kamg

Soon-Kie Hong

Ki-Yeol Yoon

Kyu-Suk Han

Do-Heang Kang

Yong-Gyun Kim

Yong-Wook Hwao

Jiyeon Jang

Hyun-Jung Jeong

Woo-Seok Chin

Min-Sou Lee

Myung-Hoon Cho

Sung-Yun Jung

Won-Seop Choi

Young-Hung Lee

Jin-Woo Cho

Ki-Taek 305-1501 Hyundai Morning Side 1St Apt Kim

Dong-Ok 304-1104 Seongyoung 3 Danji Apt Kwak

Seong-Woon Booh

A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1:V&#x3c;V&#x2264;3.6.&#x2003;&#x2003;[Relation 1]In Relation 1, Vis a voltage value at a point where a tangent line to a value corresponding to 50% of the first peak value intersects the line dQ/dV=0, and Vis a charge start voltage, as determined from a differential capacity (dQ/dV)-voltage charge/discharge plot.

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

A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound represented by Chemical Formula 2 and having a smaller particle diameter than the first compound, wherein at least one of the first compound and the second compound includes a core and a surface layer surrounding the core:LiNiCoMO,&#x2003;&#x2003;Chemical Formula 1LiNiCoMO,&#x2003;&#x2003;Chemical Formula 2wherein Mand Mare each independently at least one selected from Mn, Al, Cr, Fe, V, Mg, Ti, Zr, Nb, Mo, W, Cu, Zn, Ga, In, Sn, La, and Ce. The atomic concentration (at %) of nickel (Ni) with respect to the total amount of non-lithium metals is higher in the surface layer than in the core, and an amount of cation mixing is less than or equal to about 3%.

A positive active material for a rechargeable lithium battery includes a nickel-based lithium transition metal oxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a core and a surface layer surrounding the core, and the surface layer includes a plurality of primary particles and a nano-sized cobalt-based lithium transition metal oxide absorbed in the surface layer, between the primary particles.

A positive active material for use in a positive electrode and a rechargeable lithium battery includes a lithium cobalt oxide including a secondary particle having an average particle diameter of about 15 &#x3bc;m to about 25 &#x3bc;m, wherein the secondary particle includes a plurality of primary particles having an average particle diameter of about 2 &#x3bc;m to about 10 &#x3bc;m, and the positive active material has a pellet density of greater than or equal to about 3.80 g/cm. A method of manufacturing the positive active material includes heat-treating a cobalt-containing compound at a temperature of greater than or equal to about 900&#xb0; C. to form a cobalt oxide comprising CoOand CoO, and reacting the cobalt oxide with a lithium compound to prepare the lithium cobalt oxide.

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

A positive active material for a rechargeable lithium battery, and a rechargeable lithium battery and a battery module including the same are provided. The positive active material may include a lithium nickel-manganese-cobalt composite oxide with a coating layer on the surface. The coating layer on the surface may include a lithium oxide including Al and/or W, for example, Al and W.

Positive electrode for rechargeable lithium battery, rechargeable lithium battery including same and battery module

A semiconductor memory device includes a substrate including a cell region and a slimming region; a logic structure disposed over the substrate, the logic structure including logic circuit elements and bottom wiring lines electrically coupled to the logic circuit elements; a source plate disposed over the logic structure; a memory structure including a plurality of memory cells and a plurality of gate electrode layers, wherein the plurality of memory cells are disposed over the source plate of the cell region and a plurality of gate electrode layers are stacked over the source plate of the cell region and the slimming region to be separated from one another and are coupled to the plurality of memory cells; and a first slit cutting the source plate at a boundary between the cell region and the slimming region, wherein the source plate of the slimming region is floated regardless an operation of the memory cells and the logic circuit elements.

Semiconductor memory device with divided source plate

Provided are a positive active material, a lithium battery including the positive active material, and a method of manufacturing the positive active material. The positive active material includes a lithium molybdate composite having a core-shell structure. The lithium molybdate composite acts as a sacrificial positive electrode in a positive electrode of a battery. The positive active material is able to increase charge capacity of a lithium battery, and accordingly is able to improve lifetime properties of a lithium battery.

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

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 lithium battery including a cathode; an anode; and an electrolyte disposed between the cathode and the anode is disclosed. In the lithium battery, the cathode includes a nickel-based lithium transition metal oxide having primary particles having an average particle diameter of 2 &#x3bc;m or more, and the anode includes graphite and a silicon-based compound.

Lithium battery

Disclosed are a positive active material for a rechargeable lithium battery including a compound represented LiCoTiO, wherein 1&#x3c;x&#x2264;1.1 and 0.02&#x2264;y&#x2264;0.05; a method of preparing the same; and a rechargeable lithium battery including the same.

Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing same and rechargeable lithium battery including the same, wherein the positive active material includes lithium cobalt-based compound having pH of greater than about 7 and less than about 10.

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

Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte, wherein the positive active material includes a compound represented by the following Chemical Formula 1, the negative active material includes a silicon-based compound, the compound represented by the above Chemical Formula 1 is included in an amount of about 3 wt % to about 30 wt % based on 100 wt % of the positive active material, and the silicon-based compound is included in an amount of about 3 wt % to about 10 wt % based on 100 wt % of the negative active material.LiCOMO&#x2003;&#x2003;Chemical Formula 1 In the above Chemical Formula 1,

Rechargeable lithium battery

Provided is a refrigerator including: a body; a first storage compartment and a second storage compartment; a cold air generating unit; and a duct unit installed in front of the evaporator in the first storage compartment and including a first flow path on which the cold air is moved into the first storage compartment, a second flow path on which the cold air is moved into the second storage compartment, a first blower fan sending the cold air to the first flow path, a second blower fan sending the cold air to the second flow path, and a guide duct that partitions off the second flow path, wherein at least one cold air flowing portion is formed in the guide duct so that the first flow path and the second flow path are in communication with each other through the at least one cold air flowing portion.

Refrigerator

In an aspect, a positive active material for a rechargeable lithium battery including: a compound that reversibly intercalates and deintercalates lithium; and a coating layer coating the compound and including a metal nitrate is disclosed. Since the positive active material is structurally stable during the charge and discharge, the obtained battery may have excellent battery capacity and cycle-life characteristics and also have high power.

Positive active material for lithium secondary battery and lithium secondary battery

A rechargeable lithium battery including a negative electrode including a silicon-based negative active material; a positive electrode including a positive active material including a sacrificial positive active material selected from lithium nickel oxides, lithium molybdenum oxides, and combinations thereof; and a non-aqueous electrolyte, is disclosed.

Rechargeable lithium battery comprising positive electrode comprising sacrificial positive active material

Growing community of inventors

Yongin-si, South Korea

Young-Ki Kim