Method for manufacturing of core-shell nanoparticles for secondary battery's negative active material and core-shell nanoparticles for secondary battery's negative active material thereby

摘要

The present invention relates to a core-shell structure nanoparticle for a secondary battery negative electrode active material and a core-shell structure nanoparticle for a secondary battery negative electrode active material manufactured thereby. More particularly, the present invention relates to a core- Step 1); Irradiating the mixed solution of step 1 with ultrasonic waves (step 2); The method for manufacturing a core-shell structure nanoparticle for a negative electrode active material for a secondary battery according to claim 1, wherein the core-shell structure nanoparticle comprises a metal-based core including the step of drying and then heat- to provide. The method for producing the core-shell structure nanoparticles for a secondary battery negative electrode active material according to the present invention and the core-shell structure nanoparticles for a negative electrode active material of the secondary battery manufactured according to the present invention produce an anode active material by performing ultrasonic irradiation and heat treatment only on the precursor solution The cost is low and the reaction time for synthesis is short, making it suitable for mass production. Also, by changing the synthesis conditions, it is possible to control the thickness of the polymer layer and produce particles having a uniform size. Further, the core-shell structure nanoparticles for a secondary battery anode active material manufactured according to the present invention may include a metal-based core to provide a battery with a higher capacity than a conventional carbon-based core, and may include a polymer shell, , And it is possible to provide a battery having excellent life characteristics by minimizing gas generation.