Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2007-01-02
2007-01-02
Vanoy, Timothy C. (Department: 1754)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S596000, C423S598000, C423S599000, C423S594150, C423S049000, C423S050000, C423S053000, C423S055000, C423S058000, C423S069000, C423S071000, C423S084000, C423S179500, C423S184000, C423S085000, C429S224000, C429S231100, C429S231500, C429S231950
Reexamination Certificate
active
10886077
ABSTRACT:
Provided is a cathode composition for lithium secondary battery that includes a lithium-chromium-titanium-manganese oxide that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2where 0≦x≦0.3, 0≦y≦0.3 and 0.1≦x+y≦0.3, and layered a-LiFeO2structure. A method of synthesizing the lithium-chromium-titanium manganese oxide includes preparing a first mixed solution by dispersing titanium dioxide (TiO2) in a mixed solution of chrome acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), adding a lithium hydroxide (LiOH) solution to the first mixed solution to obtain homogeneous precipitates, forming precursor powder that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2where 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.
REFERENCES:
patent: 6361756 (2002-03-01), Gao et al.
patent: 6670076 (2003-12-01), Iwata et al.
patent: 6713037 (2004-03-01), Van Neste
patent: 6753110 (2004-06-01), Yoo et al.
patent: 6908708 (2005-06-01), Wu et al.
patent: 6924064 (2005-08-01), Kondo et al.
patent: 6960335 (2005-11-01), Singhal et al.
patent: 6986968 (2006-01-01), Hong et al.
patent: 7008608 (2006-03-01), Park et al.
patent: 2002/0114995 (2002-08-01), Thackeray et al.
patent: 2002/0136954 (2002-09-01), Thackeray et al.
patent: 2003/0027048 (2003-02-01), Lu et al.
patent: 2003/0087154 (2003-05-01), Ohzuku et al.
patent: 2004/0023113 (2004-02-01), Suhara et al.
“The role of Li2MO2 structures (M=metal ion) in the electrochemistry of (x) LiMn0.5O2 (1-x) Li2TiO3 electrodes for lithium-ion batteries”, C. Johnson, et al., 2002 Published by Elsevier Science B.V., 7 pages.
Chang Soon Ho
Park Yong Joon
Ryu Kwang Sun
Wu Xianglan
Blakely & Sokoloff, Taylor & Zafman
Electronics and Telecommunications Research Institute
Vanoy Timothy C.
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