Lerner, David, Littenberg, Krumholz & Mentlik, LLP
Negative electrode active material, method of preparing the same, and lithium secondary battery including the same
The present invention relates to a negative electrode active material, a method of preparing the same, and a lithium secondary battery including the same. In particular, the present invention relates to a composite negative electrode active material that includes: a core capable of intercalating and deintercalating lithium ions; and a plurality of coating layers comprising two or more Si layers having different densities formed on a surface of the core, and thus has enhanced stability by minimizing the formation of cracks occurring by the repetition of charging and discharging, a method of preparing the same, and a lithium secondary battery including the same and thus exhibiting enhanced lifespan characteristics.
LG Chem, Ltd.
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H01M C23C H01M H01M B01J H01M C23C H01M H01M H01M C23C Y02E
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Jung Hyun Yong Ju Eun Kyung
Choi Lee Kim