Samsung Display Devices Co., Ltd.

Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Dong-Gon Park

Ho-Jin Kweon

Geun-Bae Kim

Sung-soo Kim

Ho-jin Kweon

Ki-Ho Kim

Geun-bae Kim

Hyun-Suk Jeong

Soon-kyo Hong

Jin Koo Kang

Hye-jin Kim

Hyun-Sook Jung

Hyung-Gon Noh

Hye-young Kwon

Kae-dong Baek

Ho-Jin Samsung Sdi Kweon

A positive active material composition for a rechargeable battery includes a positive active material selected from compounds represented by formulas 1 to 13, and at least one semi-metal, metal or oxides thereof:LiMnA&#x2003;&#x2003;(1)LiMnOA&#x2003;&#x2003;(2)LiMnM'A&#x2003;&#x2003;(3)LiMnA&#x2003;&#x2003;(4)LiMnOA&#x2003;&#x2003;(5)LiMnM&#x2032;A&#x2003;&#x2003;(6)LiBA&#x2003;&#x2003;(7)LiBOA&#x2003;&#x2003;(8)LiBM&#x2033;A&#x2003;&#x2003;(9)LiBM&#x2033;OA&#x2003;&#x2003;(10)LiNiCoOA&#x2003;&#x2003;(11)LiNiCoOA&#x2003;&#x2003;(12)LiNiCoM&#x2033;A&#x2003;&#x2003;(13)

Positive active material composition for rechargeable lithium battery and method of preparing positive electrode using same

A positive active material composition for a rechargeable battery includes a positive active material selected from compounds represented by formulas 1 to 13, and at least one semi-metal, metal or oxides thereof: 

A positive active material for rechargeable lithium batteries includes an active material component processed from a manganese-based compound. The transition metal compound is selected from LiMnO, LiMnF, LiMnS, LiMnOF, LiMnOS, LiMnMO, LiMnMF, LiMnMS, LiMnMOF, LiMnMOS, LiMnO, LiMnF, LiMnOF, LiMnOS, LiMnMO, LiMnMF, LiMnMS, LiMnMOF, or LiMnMOSwhere 0&#x3c;x&#x2266;1.5, 0.05&#x2266;y&#x2266;0.3, z&#x2266;1.0 and M is selected from Al, Co, Cr, Mg, Fe or La. A metallic oxide is coated on the active material component.

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

Disclosed is a positive active material for a lithium secondary battery having high capacity and long durability properties and particularly to a powder of Li Ni C O M O , Li Ni C O M O F or Li Ni C O M O S (where M is a metal selected from the group consisting of Al, Mg, Sr, La, Ce, V, and Ti and wherein 0&lE;0.99, 0.01&lE;y&lE;0.1, 0.01&lE;z&lE;0.1, and 1.00&lE;a&lE;1.1) is surface-treated by a metal alkoxide solution whereby the durability, capacity and structural safety of said positive active material is increased.

Positive active material for lithium secondary batteries and method of preparing the same

Active material for positive electrode used in lithium secondary battery and method of manufacturing same

A positive active material for rechargeable lithium batteries includes an active material component processed from a manganese-based compound. The transition metal compound is selected from Li,MnO,, Li,MnF,, Li,MnS,, Li,MnO,F,, Li,MnO,S,, Li,Mn,M,O,, Li,Mn,M,F,, Li,Mn,M,S,, Li,Mn,M,O,F,, Li,Mn,M,O,S,, Li,Mn,O,, Li,Mn,F,, Li,Mn,S,, Li,Mn,O,F,, Li,Mn,O,S,, Li,Mn,M,O,, Li,Mn,M,F,, Li,Mn,M,S,, Li,Mn,M,O,F,, or Li,Mn,M,O,S,where O<x&lE;1.5, 0.05&lE;y&lE;0.3, y&lE;1.0 and M is selected from Al, Co, Cr, Mg, Fe, La, Sr or Ce. A vanadium pentoxide is coated on the active material component.

A method of preparing a composite of organic and inorganic compounds includes the steps of reacting a mixed solution of a metal alkoxide and a silicon-containing compound with a catalyst to produce an alcogel of a metal oxide or a complex metal oxide. The metal alkoxide is prepared by reacting at least one metal with an alcohol and the mixed solution is prepared by mixing the metal alkoxide with the silicon-containing compound. An alcogel is produced from the reacting step and alcohol is impregnated within the inorganic oxide lattice structure of the alcogel. Furthermore, the method of preparing a composite of an organic and an inorganic compound includes the steps of centrifuging the alcogel to separate any alcohol from the alcogel to form a gel, adding an organic monomer the gel and polymerizing the organic monomer in-situ to form an organic polymer. The resulting composite has characteristics of both the parent organic and inorganic compounds.

Method of preparing a composite of organic and inorganic compounds

A method for fabricating a porous composite oxide is provided. The method includes the steps of: (a) slowly mixing a solution including a silicon oxide source and a solution including an aluminum oxide source; (b) adding hydrochloric acid to the mixed solution prepared in said step (a) to obtain a sol; and (c) adding sodium hydroxide to said sol, reacting the obtained resultant at room temperature for 30 minutes to 12 hours, and drying the resultant. The porous composite oxide has an abundance of fine pores and the distribution of pore size is relatively uniform, so that the porous composite oxide is suitable for a carrier.

Growing community of inventors

Seoul, South Korea

Dong-Gon Park