| 摘要 |
A positive active material for rechargeable lithium batteries includes an active material component processed from a manganese-based compound. The transition metal compound is selected from Li<SUB>x</SUB>MnO<SUB>2</SUB>, Li<SUB>x</SUB>MnF<SUB>2</SUB>, Li<SUB>x</SUB>MnS<SUB>2</SUB>, Li<SUB>x</SUB>MnO<SUB>2-z</SUB>F<SUB>z</SUB>, Li<SUB>x</SUB>MnO<SUB>2-z</SUB>S<SUB>z</SUB>, Li<SUB>x</SUB>Mn<SUB>1-y</SUB>M<SUB>y</SUB>O<SUB>2</SUB>, Li<SUB>x</SUB>Mn<SUB>1-y</SUB>M<SUB>y</SUB>F<SUB>2</SUB>, Li<SUB>x</SUB>Mn<SUB>1-y</SUB>M<SUB>y</SUB>S<SUB>2</SUB>, Li<SUB>x</SUB>Mn<SUB>1-y</SUB>M<SUB>y</SUB>O<SUB>2-z</SUB>F<SUB>z</SUB>, Li<SUB>x</SUB>Mn<SUB>1-y</SUB>O<SUB>2-z</SUB>S<SUB>z</SUB>, Li<SUB>x</SUB>Mn<SUB>2</SUB>O<SUB>4</SUB>, Li<SUB>x</SUB>Mn<SUB>2</SUB>F<SUB>4</SUB>, Li<SUB>x</SUB>Mn<SUB>2</SUB>S<SUB>4</SUB>, Li<SUB>x</SUB>Mn<SUB>2</SUB>O<SUB>4-z</SUB>F<SUB>z</SUB>, Li<SUB>x</SUB>Mn<SUB>2</SUB>O<SUB>4-z</SUB>S<SUB>z</SUB>, Li<SUB>x</SUB>Mn<SUB>2-y</SUB>M<SUB>y</SUB>O<SUB>4</SUB>, Li<SUB>x</SUB>Mn<SUB>2-y</SUB>M<SUB>y</SUB>F<SUB>4</SUB>, Li<SUB>x</SUB>Mn<SUB>2-y</SUB>M<SUB>y</SUB>S<SUB>4</SUB>, Li<SUB>x</SUB>Mn<SUB>2-y</SUB>M<SUB>y</SUB>O<SUB>4-z</SUB>F<SUB>z</SUB>, or Li<SUB>x</SUB>Mn<SUB>2-y</SUB>M<SUB>y</SUB>O<SUB>4-z</SUB>S<SUB>z </SUB>where 0<x<=1.5, 0.05<=y<=0.3, z<=1.0 and M is selected from Al, Co, Cr, Mg, Fe or La. A metallic oxide is coated on the active material component.
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