Samsung Sdi Co., Inc.

Soon-Rewl Lee

Young-Hun Lee

Ick-Kyu Choi

Young-Ki Kim

Yong-Chul Park

Na-Ri Park

Yoon-Chang Kim

Jay-Hyok Song

Yu-Mi Song

Na-Leum Yoo

Hong-Kyu Choi

Young-Kwan Kim

Dong-Sik Zang

Young-Gil Yoo

Ji-Hyun Kim

Min-Kyu Kim

Jin-Won Kim

Do-Hyung Park

Young-ki Kim

Chang-Wook Kim

Minkyu Kim

Mi-Ran Song

Jung-Woo Moon

Kyeongwoon Chung

Hyun-Joo Je

Soo-Youn Park

Young Kwan Kim

Ji-Yeon Jang

Jeong-Hyeon Ha

Jeong-Hee Kim

Soon-Kie Hong

Sung-Yong Lee

Kyu-Suk Han

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.

Composite cathode active material, cathode and lithium battery including the composite cathode active material, and preparation method thereof

A cathode active material including at least two agglomerates of primary particles and a cathode and a lithium secondary battery containing the same are disclosed. In the cathode active material, a secondary particle includes a nickel-based lithium transition metal oxide, an average particle diameter of each primary particle is in a range from about 2 to about 3 &#x3bc;m, and an average particle diameter of the secondary particle is in a range from about 5 to about 8 &#x3bc;m.

Cathode active material, method of preparing the cathode material, cathode, and lithium secondary battery including the same

Disclosed is a positive active material for a lithium secondary battery. The positive active material includes a lithium molybdenum oxide having an X-ray diffraction (XRD) pattern with peaks at 11.5&#xb1;2&#xb0;, 21&#xb1;2&#xb0;, 38&#xb1;2&#xb0;, and 64&#xb1;2&#xb0; 2-theta (2&#x3b8;) and represented by Formula 1: LiMoO, where 1&#x3c;x&#x2266;3. Also disclosed is a method of preparing the positive active material.

Positive active material for lithium secondary battery

Disclosed is a positive electrode and a lithium battery including the positive electrode. The positive electrode includes a current collector, a first layer irreversibly deintercalating lithium ions, and a second layer allowing reversible intercalation and deintercalation of lithium ions. In one embodiment, the first layer further comprises a first sublayer and a second sublayer, in which the first sublayer is interposed between the current collector and the second sublayer. The first sublayer comprises a first active material represented by Formula 1 LiMoRO, and the second sublayer comprises a second active material represented by Formula 2 LiNiRO. In Formula 1, 0&#x2266;n&#x3c;1; and Ris selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), copper (Cu), zinc (Zn), magnesium (Mg), nickel (Ni), and combinations of at least two of the foregoing elements. In Formula 2, 0&#x2266;m&#x3c;1; and Ris selected from the group consisting of Mn, Fe, Co, Cu, Zn, Mg, molybdenum (Mo), and combinations of at least two of the foregoing elements.

Growing community of inventors

Yongin-si, South Korea

Soon-Rewl Lee