Nanometal-flake-graphite composite and method of manufaturing the same

#This application claims the benefit of Korean Patent Application No. 10-2013-0164154, filed on Dec. 26, 2013, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.

#1. Field of the Invention

#The present invention relates to a carbon-based material, for example, a nanometal-flake graphite composite including nanometal-flake graphite, in which crystallized nanometal particles are highly densely bonded to the surface of flake graphite, and a polydopamine coating layer, and more particularly, to a nanometal-flake graphite composite, in which properties, such as bonding properties between flake graphite basal planes, adhesiveness with other media, and dispersibility, are significantly improved by bonding polydopamine to the nanometal-flake graphite, and a method of manufacturing the nanometal-flake graphite composite.

#The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:

#FIG. 1 is a schematic view illustrating structural changes due to an oxidation reaction of dopamine and a resultant polydopamine formation step;

#FIG. 2 is a schematic view illustrating a process in which a polydopamine coating layer is formed on nanometal-flake graphite of the present invention;

#Hereinafter, preferred embodiments will be described in more detail with reference to the accompanying drawings. Moreover, detailed descriptions of well-known functions or configurations will be omitted in order not to unnecessarily obscure the focus of the present invention.

#An embodiment of the present invention is related to a nanometal-flake graphite composite that is characterized in that nanometal-flake graphite, in which crystallized nanometal particles are highly densely bonded to the surface of flake graphite, is coated with polydopamine to form a polydopamine coating layer.

#In this case, the polydopamine may be coated on the nanometal-flake graphite by being deposited on the crystallized nanometal particles, and the polydopamine coating layer may have a thickness of 5 nm to 100 nm.