Samsung Sdi Co., Inc.

Lg Display Co., Ltd.

Young-Hun Lee

Ick-Kyu Choi

Young-Ki Kim

Soon-Rewl Lee

Yong-Chul Park

Yoon-Chang Kim

Jay-Hyok Song

Na-Ri Park

Yu-Mi Song

Ji-Hyun Kim

Do-Hyung Park

Young-ki Kim

Hyun-Deok Lee

Mi-Ran Song

Na-Leum Yoo

Yong-Chan You

Min-Ju Kim

Hong-Kyu Choi

Seon-Young Kwon

Gyeong-Jae Heo

Dong-Sik Zang

Jin-Hyoung Seo

Sun-Hwa Kwon

Young-Kwan Kim

Yongmok Cho

Hyunjei Chung

Min-Kyu Kim

Chang-Wook Kim

Ickkyu Choi

Mingzi Hong

Soonrewl Lee

Soonkie Hong

Hyun-Joo Je

Soo-Youn Park

Ji-Yeon Jang

Soon-Kie Hong

Kyu-Suk Han

Jiyeon Jang

A positive active material for a rechargeable lithium battery includes: a core having a layered structure; and a surface layer on at least one portion of the surface of the core and including an oxide, wherein the oxide includes at least one first element and at least one second element each selected from Ti, Zr, F, Mg, Al, P, and a combination thereof, the first element and the second element being different from one another, the first element included in the positive active material in an amount of about 0.01 mol % to about 0.2 mol % based on a total weight of the positive active material, and the second element included in the positive active material in an amount of about 0.02 mol % to about 0.5 mol % based on a total weight of the positive active material. A rechargeable lithium battery includes the positive active material.

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

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

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.

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

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

A rechargeable lithium battery includes a non-aqueous electrolyte, a negative electrode including a silicon-based negative active material, and a positive active material including a compound represented by a Chemical Formula 1, LiCoMO, wherein, &#x2212;0.2&#x2266;x&#x2266;0.2, 0&#x3c;y&#x2266;0.2, and M includes Ni and one selected from Mn, B, Mg, Ca, Sr, Ba, Ti, V, Cr, Fe, Cu, Al, and a combination thereof.

Method for preparing positive active material for rechargeable lithium battery and rechargeable lithium battery including positive active material

In an aspect, a rechargeable lithium battery including a negative electrode including a silicon-based negative active material is disclosed.

A positive active material including a lithium composite oxide and a transition metal oxide including a transition metal having an oxidation number smaller than an oxidation number when the transition metal is in the most stable state hinders generation of oxygen occurring during charging and provides a lithium battery with high-temperature preservation characteristics and high stability.

Positive active material and lithium battery including the same

In an aspect, a composite cathode active material a cathode and a lithium battery including the composite cathode active material, and a method of preparing the composite cathode active material is disclosed.

Growing community of inventors

Yongin-si, South Korea

Young-Hun Lee