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. 17, 2006
Filed:
Dec. 20, 2002
Young Sik Hong, Daejon-Shi, KR;
Kwang Sun Ryu, Daejon-Shi, KR;
Soon Ho Chang, Daejon-Shi, KR;
Yong Joon Park, Daejon-Shi, KR;
Young Gi Lee, Daejon-Shi, KR;
Kwang Man Kim, Daejon-Shi, KR;
Nam Gyu Park, Daejon-Shi, KR;
Man Gu Kang, Daejon-Shi, KR;
Xiang Lan Wu, Daejon-Shi, KR;
Young Sik Hong, Daejon-Shi, KR;
Kwang Sun Ryu, Daejon-Shi, KR;
Soon Ho Chang, Daejon-Shi, KR;
Yong Joon Park, Daejon-Shi, KR;
Young Gi Lee, Daejon-Shi, KR;
Kwang Man Kim, Daejon-Shi, KR;
Nam Gyu Park, Daejon-Shi, KR;
Man Gu Kang, Daejon-Shi, KR;
Xiang Lan Wu, Daejon-Shi, KR;
Electronics and Telecommunications Research Institute, Daejon-Shi, KR;
Abstract
A cathode active material for a lithium secondary cell used in a cellular phone is disclosed. The cathode active material for the lithium secondary cell and the method the same having a high capacity and a long lifetime, different from LiCoOand LiMnO, Li(Ni, Co)O, and V-system oxide that has been researched as the active material for substituting LiCoOare provided. The cathode active material for the lithium secondary cell in the next formula 1 is obtained by heating or chemically treating diadochite [Fe(PO)(SO)(OH).6HO] that is the mineral containing PO, SO, and OH.LiFeM(PO)(SO)(OH)  (1) In the formula, M is at least one element selected from a radical consisting of Mg, Ti, Cr, Mn, Co, Ni, Cu, Zn, Al, and Si, with 0≦a, c≦0.5, 1≦b≦2, 0.5≦x, y, z≦1.5.