Preparation and electrochemical capacitance of poly(pyrrole‐co‐aniline)

Abstract

The copolymer of pyrrole and aniline, poly(pyrrole-co-aniline), has been prepared by chemical oxidation of corresponding monomer mixtures with ammonium peroxysulfate. Techniques of FTIR, SEM-EDS, and BET surface area measurement were used to characterize the structure and morphology of the copolymer. The electrochemical properties of the copolymer were investigated by cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The results indicated that poly(pyrrole-co-aniline) was about 100-300 nm in diameter and showed better electrochemical capacitive performance than polypyrrole and polyaniline. The specific capacitance of the copolymer electrode was 827 F/g at a current of 8 mA/cm 2 in 1 mol/L Na 2 SO 4 electrolyte.

Poly(aniline-co-pyrrole) on the surface of reduced graphene oxide as high-performance electrode materials for supercapacitors

“…The copolymerization of aniline and pyrrole monomers not only offers a possibility to combine superior properties of the individual monomers but also exhibits new properties such as thermal stability better than PANi and PPy [2, 20-25]. Furthermore, it has been demonstrated that poly(aniline-co-pyrrole) (PANi-co-PPy) exhibited better electrochemical capacitive performance than single component [2,21,22,26]. However, it is also observed that the conductivity decreased when aniline is polymerized with pyrrole.…”

“…Electrochemical supercapacitors that provide a bridge between conventional capacitors with short charge-discharge times and batteries with long discharge times have attracted much attention due to their excellent cycling performance, higher power density, fast response, and potential application in electric vehicles, consumer electronics, and other devices [1][2][3][4][5].…”

Electrodeposition of pyrrole and 3-(4-tert-butylphenyl)thiophene copolymer for supercapacitor applications

“…(1/1) copolymer after 25 cycles of CV scans at a scan rate of 50 mV s [16]. It is believed that the best practice test methods accurately predicting a material's supercapacitor performance is from a two electrode system [17].…”

Corrosion protection by epoxy/poly(aniline‐co‐pyrrole)/ZnO nanocomposite coating

“…To measure the electrical properties of PAZ and PAPZ, nanocomposites were pressed on a graphite electrode (1 cm 2 ) by the method described in Ref. and used as a working electrode. To test the properties of EP, EPAZ, and EPAPZ coatings using EIS, SS304 plates with these coatings were used as working electrodes.…”