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    • 1. 发明授权
    • Cathode composition for lithium batteries and method of preparing the same
    • 锂电池用阴极组合物及其制备方法
    • US07157072B2
    • 2007-01-02
    • US10886077
    • 2004-07-06
    • Xianglan WuYong Joon ParkKwang Sun RyuSoon Ho Chang
    • Xianglan WuYong Joon ParkKwang Sun RyuSoon Ho Chang
    • C01B13/00
    • H01M4/505C01G45/1221C01G45/1228C01P2002/52C01P2002/72C01P2004/03C01P2006/40H01M4/0471H01M4/485
    • 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]O2 where 0≦x≦0.3, 0≦y≦0.3 and 0.1≦x+y≦0.3, and layered a-LiFeO2 structure. 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]O2 where 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.
    • 本发明提供一种锂二次电池用阴极组合物,其特征在于,具有式Li [Li(1-x)/ 3 Ti(2/3)y Mn 2(1-xy)/ 3 O 2其中0 <= x <= 0.3,0 <= y <= 0.3和0.1 <= x + y <= 0.3,层叠a-LiFeO 2结构。 合成锂 - 铬 - 钛锰氧化物的方法包括通过将二氧化钛(TiO 2)在乙酸铬(Cr 3 O 3)的混合溶液中分散来制备第一混合溶液, (OH)2(CH 3 CO 2)7)和乙酸锰((CH 3) 将第一混合溶液中的氢氧化锂(LiOH)溶液加入到第二混合溶液中,向第二混合溶液中加入氢氧化锂(LiOH) 获得均匀的沉淀物,形成具有式Li [Li(1-x)/ 3 Cr x Ti(2/3)y Mn 2(1-xy)/ 3 O 2其中0 <= x <= 0.3,0 <= y <0.3和0.1 <= x + y 通过加热均匀的沉淀物,加热前体粉末形成具有层状结构的氧化物粉末,使其为<= 0.3。