Two Functional Nanofibers of Polyaniline with Application in Supercapacitor and Photosensor

A series of nanosheets and nanofibers polyaniline was prepared via controlled polymerization. The optimum acid doping amount of polyaniline was obtained (acetic acid:aniline = 7:9; hydrochloric acid:aniline = 2.5:5; citric acid:aniline = 3:5), in which the specific capacitance can reach 162.5 F/g, 271.25 F/g, 240.99 F/g, respectively. The C–V curve indicating the nanorods polyaniline photosensitive sensor chip exhibits excellent sensitivity to green light and blue light. The photocurrent of the sample doped with hydrochloric acid is closest to the 10 –6 A. It can be concluded that the PANI has an immense potential in photosensitive sensors and supercapacitors.