| abstract |
The invention discloses a preparation method of graphene/polyacrylonitrile nanofiber composite aerogel, which belongs to the field of graphene aerogel, and specifically includes: configuring a graphene oxide solution of a certain concentration, modifying it to introduce nitrile groups; Then, the nitrile-modified graphene oxide solution and the polyacrylonitrile nanofiber dispersion were mixed and dispersed by ultrasonic; the nitrile-modified graphene oxide/polyacrylonitrile nanofiber mixed solution was freeze-dried, pre-oxidized, and hydrothermally reduced to obtain Graphene/polyacrylonitrile nanofiber composite hydrogel; graphene/polyacrylonitrile nanofiber composite aerogel is prepared by freeze-drying the graphene/polyacrylonitrile nanofiber composite hydrogel. The preparation process of the invention is non-toxic and environmentally friendly, and the obtained aerogel has the advantages of large specific surface area, good resilience and stable structure, and can be used for preparing electrode materials of supercapacitors or batteries. |