Samsung Sdi Co., Inc.

Joon-Hyung Lee

Chong-Gi Hong

Hee-Joong Kim

Andriy Kvasha

Oleg Levin

Provided is a rechargeable lithium battery that includes a positive electrode including a positive active material; a negative electrode including a negative active material; a separator interposed between the positive electrode and the negative electrode; and an electrolyte solution, wherein the positive active material includes lithium metal oxide and a compound represented by the following Chemical Formula 1 and coated on a surface of the lithium metal oxide, and the separator includes a porous substrate and a coating layer including ceramic and disposed on at least one side of the porous substrate.LiAlM(PO)&#x2003;&#x2003;[Chemical Formula 1] In Chemical Formula 1, M is at least one metal selected from Ti, Cr, Ga, Fe, Sc, In, Y, Mg, and Si, and 0&#x3c;x&#x2266;0.7.

Rechargeable lithium battery and a method of making a rechargeable lithium battery

In an aspect, a positive electrode for a rechargeable lithium battery including a current collector, a positive active material layer disposed on the current collector, and a coating layer disposed on the positive active material layer is disclosed.

Positive electrode for rechargeable lithium battery and rechargeable lithium battery including same

A positive active material for a lithium secondary battery comprises a core comprising a compound that can reversibly intercalate and deintercalate lithium; and a compound attached to the surface of the core and represented by Chemical Formula 1:LiM(I)M(II)SiPO,&#x2003;&#x2003;[Chemical Formula 1] wherein M(I) and M(II) are selected from the group consisting of Al, Zr, Hf, Ti, Ge, Sn, Cr, Nb, Ga, Fe, Sc, In, Y, La, Lu, and Mg, and 0&#x3c;x&#x2266;0.7, 0&#x2266;y&#x2266;1.

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Yongin-si, South Korea

Joon-Hyung Lee