US 11,866,336 B2
Method for producing reduced graphene oxide
Gun Ho Kim, Ulsan (KR)
Assigned to UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY), Ulsan (KR)
Appl. No. 17/271,199
Filed by UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY), Ulsan (KR)
PCT Filed Aug. 26, 2019, PCT No. PCT/KR2019/010825
§ 371(c)(1), (2) Date Feb. 24, 2021,
PCT Pub. No. WO2020/045911, PCT Pub. Date Mar. 5, 2020.
Claims priority of application No. 10-2018-0100576 (KR), filed on Aug. 27, 2018.
Prior Publication US 2022/0119263 A1, Apr. 21, 2022
Int. Cl. C01B 32/198 (2017.01); C23C 16/40 (2006.01); C23C 16/455 (2006.01); C23C 16/46 (2006.01)
CPC C01B 32/198 (2017.08) [C23C 16/40 (2013.01); C23C 16/45557 (2013.01); C23C 16/46 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of producing a reduced graphene oxide, the method comprising:
arranging a carbon material;
arranging a substrate adjacent to the arranged carbon material;
heating the arranged carbon material to a temperature of about 600° C. or higher; and
depositing the heated carbon material on the substrate to form a reduced graphene oxide thin film,
wherein the arranged carbon material is solid seedlac,
wherein the solid seedlac is in a form of a powder,
wherein the solid seedlac and the substrate are arranged in a heating chamber of which an internal temperature is controllable,
wherein the substrate is arranged in a space within about 1 m around the solid seedlac,
wherein the internal pressure of the heating chamber is about 1×10−1 torr or lower, and
wherein a carbon content of the reduced graphene oxide produced by the method is in a range of about 90% or higher.