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|1. (WO2018084652) LITHIUM ION SECONDARY BATTERY|
|Applicants:||LG CHEM, LTD.
|Title:||LITHIUM ION SECONDARY BATTERY|
The present invention relates to a secondary battery using vanadium oxide as a cathode active material, and a lithium ion secondary battery having properties of preventing vanadium elution and thus preventing a decrease in capacity. According to the present invention, the vanadium oxide is characterized by including secondary particles formed by assembling primary particles.