公开(公告)号：US11845665B2

公开(公告)日：2023-12-19

申请号：US17048891

申请日：2018-08-31

Applicant: SHANDONG UNIVERSITY

Inventor： Guoqun Zhao ,  Jie Gong

IPC: C01B32/336 ,  C01B32/318 ,  C08J5/18

CPC classification number: C01B32/336 ,  C01B32/318 ,  C08J5/18 ,  C08J2333/20

Abstract: A preparation method of a polyacrylonitrile-based three-dimensional macroporous carbon monolith. The process route of the method includes the following steps: completely dissolving polyacrylonitrile in an organic solvent, then carrying out drying, cutting, hot-pressing and punching to obtain a foam precursor, next, preparing a polyacrylonitrile foam with a controllable pore structure by a supercritical carbon dioxide batch foaming method, and finally carrying out pre-oxidation and carbonization treatment to obtain the polyacrylonitrile-based three-dimensional macroporous carbon monolith. The preparation method of the polyacrylonitrile-based three-dimensional macroporous carbon monolith of the present invention is simple, easy to control, environmentally friendly and low in cost, thus, the present invention is conducive to large-scale production of the carbon monolith. The prepared polyacrylonitrile-based three-dimensional macroporous carbon monolith has the characteristics of uniform and controllable pore structure and good conductivity, and has a broad application prospect. The method has simple steps, convenient operation and high practicability.