Negative electrode active material, method for preparing the same and lithium secondary battery including negative electrode active material
AssigneeSamsung SDI Co., Ltd.
InventorsJong-Hee LEE, Yong-Mi Yu, Joa-Young Jeong, Jae-Myung Kim
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Abstract
A negative electrode active material, a method of preparing the negative electrode active material and a lithium secondary battery including the negative electrode active material are disclosed. A negative electrode active material includes a lithium titanate, wherein a portion of lithium of the lithium titanate is substituted by at least one selected from the group consisting of Sr, Ba, a mixture thereof and an alloy thereof, and thus a lithium secondary battery including the negative electrode active material may improve high-rate discharge characteristics.
Claims20
A negative active material for a secondary lithium battery comprising lithium titanate,
- wherein a portion of the lithium in the lithium titanate is substituted by at least one selected from the group consisting of strontium (Sr), barium (Ba), a mixture thereof and an alloy thereof.
A method of manufacturing a negative active material for a secondary lithium battery comprising:
- providing a lithium salt, a Ti precursor and an alkaline earth metal salt;
- mixing the lithium salt, Ti precursor and alkaline earth metal to form a mixture;
- and
- heat treating the mixture.
Dependencies are inferred from the claim text.