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Cathode active material having excellent electrochemical properties and lithium secondary battery comprising the same
Cathode active material having excellent electrochemical properties and lithium secondary battery comprising the same
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机译:具有优异电化学性能的阴极活性材料和包含该活性材料的锂二次电池
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摘要
The present disclosure provides a cathode active material comprising: lithium transition metal oxide-based particles; and a titanium dioxide coating layer formed on a part or a whole of a surface of the particle, in which the titanium dioxide coating layer is a partially reduced TiO2−x (0x2), a preparation method thereof, and a lithium secondary battery including the cathode active material. The cathode active material of the present disclosure may significantly improve electrochemical properties of an electrochemical device including the cathode active material, preferably a lithium secondary battery by decomposing lithium-containing impurities remaining on the surface of the cathode active material by a partially reduced titanium dioxide coating layer formed on the surface of the cathode active material and enhancing the electrical conductivity of the cathode active material.
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