- - The preparation method of multi-layer core-shell nano particles comprising porous carbon shell and core-shell nano particles thereby

摘要

Comprising the steps of: supplying a core nanoparticle, a primary coating source and a secondary coating source to a high-temperature high-pressure hermetically sealed reactor, sealing the reactor, firstly heating the reactor, and secondarily heating the reactor Discloses a method for producing core-shell nanoparticles having two or more shells containing a porous carbon shell. When the electrode material is manufactured using the core-shell nanoparticles according to one embodiment of the present invention as an electrode active material, the charged amount of the battery increases, and an excellent charging amount can be maintained even when charging and discharging are repeated many times.