Patent number: 6974601
Abstract: Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes at least one compound represented by formulas 1 to 4: LixNi1-yMnyF2??(1) LixNi1-yMnyS2??(2) LixNi1-y-zMnyMzO2-aFa??(3) LixNi1-y-zMnyMzO2-aSa??(4) where M is selected from the group consisting of Co, Mg, Fe, Sr, Ti, B, Si, Ga, Al, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No and Lr, 0.95?x?1.1, 0<y?0.99, 0?z?0.5, and 0?a?0.5; and a metal oxide or composite metal oxide layer formed on the compound.
Type:
Grant
Filed:
March 23, 2004
Date of Patent:
December 13, 2005
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Ho-Jin Kweon, Hyun-Sook Jung, Yong-Chul Park, Geun-Bae Kim
Patent number: RE43276
Abstract: Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes at least one compound represented by formulas 1 to 4 and a metal oxide or composite metal oxide layer formed on the compound. LixNi1?yMnyF2??(1) LixNi1?yMnyS2??(2) LixNi1-?y?2MnyMzO2?aFa??(3) LixNi1?y?zMnyMzO2?aSa??(4) (where M is selected from the group consisting of Co, Mg, Fe, Sr, Ti, B, Si, Ga, Al, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No and Lr, 0.95?x?1.1, 0<y?0.99, 0?z?0.5, and 0?a?0.5).
Type:
Grant
Filed:
September 13, 2010
Date of Patent:
March 27, 2012
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Ho-Jin Kweon, Hyun-Sook Jung, Yong-Chul Park, Geun-Bae Kim