Electrode active material with multi-element based oxide...

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

Reexamination Certificate

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C429S218100, C429S231950

Reexamination Certificate

active

07727670

ABSTRACT:
Disclosed is an electrode active material comprising: (a) electrode active material particles capable of lithium intercalation/deintercalation; and (b) a multinary oxide coating layer partially or totally formed on the surface of the electrode active material particles, the multinary oxide coating layer comprising Al, P and a halogen element. A method for preparing the electrode active material, an electrode using the electrode active material, and an electrochemical device comprising the electrode, preferably a lithium secondary battery, are also disclosed. The electrode active material comprising a multinary oxide coating layer has improved structural stability and thermal safety, and thus can provide an electrochemical device having high capacity, long service life and excellent safety.

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International Search Report dated Sep. 2, 2005 for Applcation No. PCT/KR2005/002909.
Office Action issued by the Canadian Patent Office on Apr. 16, 2009.

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