Manufacturing method of SiO2/CNFs composite and Lithium secondary battery using of Co-Ni catalysts

摘要

The present invention relates to a carbon nanofiber composite material and a method for manufacturing the same, and more particularly, to a method for preparing a cobalt-nickel catalyst-based silica / carbon nanofiber composite material using an electrophoretic deposition method and a method for manufacturing a secondary battery will be. (A) depositing a cobalt and nickel catalyst on the carbon fiber woven fabric by electrophoretic deposition with the cathode as the carbon electrode and the anode as the carbon fiber woven fabric; (b) reducing the carbon fiber woven fabric on which the cobalt and nickel catalyst are deposited; (c) growing carbon nanofibers in the reduced carbon fiber woven fabric by chemical vapor deposition using ethylene gas; (d) hydrolyzing TEOS to the grown carbon nanofibers to coat silica; And (e) the carbon nanofibers in step (c) or the silica in step (d) Nickel-based catalyst-based silica / carbon nanofibers including a step of preparing a secondary battery composed of a coated carbon nanofiber as a working electrode (WE), a lithium metal as a counter electrode, and a separator containing an electrolyte, A battery manufacturing method is provided.