Preparation and electrochemical performances of porous polypyrrole film by interfacial polymerization

Abstract

In this study, porous polypyrrole (PPy) film was synthesized by facile interfacial polymerization using ionic liquid as oxidant. The morphology of PPys changed from dense microspherical/nanospherical agglomerated structure to porous structure with the increasing concentration of the oxidant. The magnetic ionic liquid, 1-butyl-3-methylimidazolium tetrachloroferrate (Bmim[FeCl 4 ]), played a major role of oxidant when the concentration was lower than 0.075M. As the concentration increased to 0.075M, the p-p interactions between pyrrole cations and iminazole ring of Bmim[FeCl 4 ], as evidenced by Fourier transform infrared spectrometer results, may affect the packing of PPy chains and subsequently cause the formation of porous structure of PPys. Electrochemical performances showed that PPy with porous structure displayed the highest specific capacitance of 170 F/g at a current density of 2 A/g in 1M H 2 SO 4 solution and a good capacitive behavior, which has potential application as supercapacitor materials.

Self‐assembled polypyrrole film by interfacial polymerization for supercapacitor applications

“…The two peaks at 1543 cm −1 and 1453 cm −1 can be attributed to the asymmetric and symmetric stretching vibrations of Py rings, respectively . The band at about 1305 cm −1 is ascribed to the CN stretching in Py rings of the PPy backbones . The obvious peak at 1183 cm −1 reflect the CH stretching of Py rings, while the peaks of CH deformation vibrations appear at 1040 cm −1 and 920 cm −1 , which correspond to CH in‐plane deformation and CH out‐of‐plane deformation, respectively .…”

Towards enhanced electrochemical capacitance with self‐assembled synthesis of poly(pyrrole‐co‐o‐toluidine) nanoparticles

“…As for the PPY [spectrum C in Figure (a)], the two peaks at 1543 and 1453 cm −1 can be attributed to the asymmetric and symmetric stretching vibrations of PY rings, respectively . The band at about 1305 cm −1 is ascribed to the CN stretching in PY units . The obvious peak at 1183 cm −1 reflect the CH stretching of PY rings, while the peaks of CH deformation vibrations appear at 1040 and 910 cm −1 .…”

One-Step Preparation of Freestanding Polypyrrole Films at Air-Water Interface

“…Generally, electrochemical approach has been used for preparing PPy as well as some other conducting polymer films on electrodes ,. Recently, chemical interfacial polymerization route gains a lot of interests from the researchers for freestanding PPy film preparation . Wang et al.…”