The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Jul. 06, 2004
Xianglan Wu, Daejeon, KR;
Yong Joon Park, Daejeon, KR;
Kwang Sun Ryu, Daejeon, KR;
Soon Ho Chang, Daejeon, KR;
Xianglan Wu, Daejeon, KR;
Yong Joon Park, Daejeon, KR;
Kwang Sun Ryu, Daejeon, KR;
Soon Ho Chang, Daejeon, KR;
Abstract
Provided is a cathode composition for lithium secondary battery that includes a lithium-chromium-titanium-manganese oxide that has the formula Li[LiCrTiMn]Owhere 0≦x≦0.3, 0≦y≦0.3 and 0.1≦x+y≦0.3, and layered a-LiFeOstructure. A method of synthesizing the lithium-chromium-titanium manganese oxide includes preparing a first mixed solution by dispersing titanium dioxide (TiO) in a mixed solution of chrome acetate (Cr(OH)(CHCO)) and manganese acetate ((CHCO)Mn.4HO), adding a lithium hydroxide (LiOH) solution to the first mixed solution to obtain homogeneous precipitates, forming precursor powder that has the formula Li[LiCrTiMn]Owhere 0≦x≦0.3, 0≦y≦0.3 and 0.1≦x+y≦0.3 by heating the homogeneous precipitates, and heating the precursor powder to form oxide powder having a layered structure.