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구분 출원국
출원년도 ~ 키워드

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등록 리튬 이차전지용 양극 재료 및 그 제조 방법

리튬 이차전지용 양극 재료 및 그 제조 방법
이미지 확대
발명자
오향란, 박용준, 장순호, 류광선
출원번호
10886077 (2004.07.06)
공개번호
20050069772 (2005.03.31)
등록번호
7157072 (2007.01.02)
출원국
미국
협약과제
초록
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.
KSP 제안 키워드
Layered structure, Lithium battery, Lithium secondary batteries, Manganese acetate, Mixed solution, Oxide powder, Precursor powder, lithium hydroxide, manganese oxide, secondary battery, titanium dioxide