Porous carbon material and preparation method thereof

• Main Authors: YANG JIANHONG, JIN XINKAI, GAO HONGQUAN, ZHANG DONG, XU GUIJIANG, SUN YONGLING, ZHOU HAITAO, WU JIANCHUN, LIU CHAO
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2019
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention provides a porous carbon material and a preparation method thereof. According to the preparation method, a biomass cellulose material cotton is adopted as a precursor, and acid heat treatment, neutralization impregnation, heat treatment and post-treatment are performed so as to prepare the N,P-doped porous carbon material. Raw materials have the characteristics of rich sources, highcontent of carbon and acid absorption and swelling, a rich pore-channel structure is formed easily, and the carbon-based material with a stable structure, excellent performance and multiple purposes is prepared; the prepared porous carbon material is doped with N and P, and has a BET specific surface area of 2000 m /g and a total pore volume of 1-3 cm .g<-1>, wherein the mesoporous pore volumeaccounts for 40-90% of the total pore volume, and the average pore diameter is 1.8-6 nm; the content of the P element is 0.3-5%, and the content of the N element is 0.5-5%; and meanwhile, the material also has a certain degree of