POROUS-CORE SHELL STRUCTURED ANODE ACTIVE MATERIAL FOR ELECTROCHEMICAL DEVICE, AND MANUFACTURING METHOD OF THE SAME

摘要

The present invention relates to a negative electrode active material of a porous core-shell structure for an electrochemical device, and a manufacturing method thereof and, more specifically, to a negative electrode active material of a porous core-shell structure for an electrochemical device, including porous metal powders and polymer layers formed on the surface of the porous metal powders, and to a manufacturing method thereof. The negative electrode active material of a porous core-shell structure for an electrochemical device of the present invention comprises polymer surface layers formed on the surface of a porous metal powder part to absorb and desorb lithium ions, and accordingly enables lithium ions to freely move and to withstand stress caused by a change in expandable volume as charged and discharged, thereby having high capacity and increasing battery capacitance per volume.