GRAPHENE-COATED STEEL SHEET AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2021/112399

A1

The present invention pertains to a method for producing a graphene-coated steel sheet, the method comprising the steps of: modifying the surface of the steel sheet so that the surface is negatively charged; forming a positively-charged first graphene oxide layer on the surface-modified steel sheet; forming a negatively-charged second graphene oxide layer on the first graphene oxide layer; and heat-treating the steel sheet on which the first and second graphene oxide layers are formed. The present invention provides a graphene coating method which can be easily applied to large-area coating through a simple process without a special dispersant or binder, and has the effect of allowing the excellent physical properties of graphene to be more efficiently exhibited.

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YOO HYE-JIN (KR)
KIM JUNG-SU (KR)
BAEK JE-HOON (KR)
BYEON CHANG-SE (KR)

PCT/KR2020/014340

June 10, 2021

October 20, 2020

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POSCO (KR)

B05D1/18; B05D1/20; B05D3/02; B05D3/04; B05D3/06; B05D7/00; B05D7/14; B05D7/24

KR101482327B1	2015-01-13
KR101911745B1	2018-10-25
KR101714847B1	2017-03-10
KR101819302B1	2018-01-17
KR101989017B1	2019-06-13
CN106784915A	2017-05-31

See also references of EP 4070892A4

C&S PATENT AND LAW OFFICE (KR)

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