US 12,330,945 B2
Graphene powder, and preparation method therefor and application thereof
Sai Sun, Shanghai (CN); Siyu Zhang, Shanghai (CN); Wenqian Dong, Shanghai (CN); and Huanxin Gao, Shanghai (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, Shanghai (CN)
Appl. No. 18/555,904
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, Shanghai (CN)
PCT Filed Sep. 27, 2021, PCT No. PCT/CN2021/120924
§ 371(c)(1), (2) Date Oct. 18, 2023,
PCT Pub. No. WO2022/222380, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110438129.0 (CN), filed on Apr. 22, 2021.
Prior Publication US 2024/0217825 A1, Jul. 4, 2024
Int. Cl. C01B 32/19 (2017.01); C01B 32/225 (2017.01)
CPC C01B 32/19 (2017.08) [C01B 32/225 (2017.08); C01B 2204/22 (2013.01); C01B 2204/24 (2013.01); C01B 2204/30 (2013.01); C01B 2204/32 (2013.01); C01P 2002/72 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2006/11 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A graphene powder comprising particles that each comprises a plurality of graphene sheets and voids disposed among the plurality of graphene sheets, wherein the graphene powder has a Raman spectrum with a D peak and a G peak having peak heights of ID and IG, respectively, wherein ID/IG is 0.03-0.10, and wherein the graphene powder has a carbon content of greater than or equal to 99.50%, a particle size of 20-35 μm, a specific surface area of 50-300 m2/g, and an oxygen content of 300 ppm or less.