Study on the preparation and multiproperties of the polypyrrole films doped with different ions

Here we developed a free-standing reduced graphene oxide (rGO)-polypyrrole (PPy) hybrid paper via electropolymerization on a paper-like graphene gel. This flexible hybrid paper displayed a uniform layered structure with PPy coated onto the graphene layers. A high areal mass of 2.7 mg cm−2 could be obtained. It delivered a greatly enhanced areal capacitance of 440 mF cm−2 at 0.5 A g−1, in contrast to that 151∼198.5 mF cm−2 previously reported for graphene paper or polypyrrole-graphene paper. It can retain ∼81% of the initial capacitance at a high current density of 6 A g−1. The combined high flexibility with outstanding electrochemical performance, makes such novel hybrid paper a promising electrode for flexible supercapacitors. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsShu, K., Wang, C., Zhao, C., Ge, Y. & Wallace, G. G. (2016). A free-standing graphene-polypyrrole hybrid paper via electropolymerization with an enhanced areal capacitance. Electrochimica Acta, 212 561-571. AbstractHere we developed a free-standing reduced graphene oxide (rGO)-polypyrrole (PPy) hybrid paper via electropolymerization on a paper-like graphene gel. This flexible hybrid paper displayed a uniform layered structure with PPy coated onto the graphene layers. A high areal mass of 2.7 mg cm -2 could be obtained. It delivered a greatly enhanced areal capacitance of 440 mF cm -2 at 0.5 A g -1 , in contrast to that 151~198.5 mF cm -2 previously reported for graphene paper or polypyrrole-graphene paper. It can retain ~81% of the initial capacitance at a high current density of 6 A g -1 . The combined high flexibility with outstanding electrochemical performance, makes such novel hybrid paper a promising electrode for flexible supercapacitors.

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“…Since these rGO-PPy respectively [30,31]. The band at 1150 cm -1 is due to the stretching vibration of the sulfonate group in pTS [32].…”

Section: Resultsmentioning

confidence: 96%

A Free-standing Graphene-Polypyrrole Hybrid Paper via Electropolymerization with an Enhanced Areal Capacitance

Shu

Wang

Zhao

et al. 2016

Electrochimica Acta

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“…In order to further improve the conductivity and surface quality of GF-coated films, a layer of pTS-doped polypyrrole (since it is known that the pTS dopant can improve the stability of PPy SCs) [36][37][38] was galvanostatically deposited at 2 mA cm -2 ( Figure S2a). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 12 diffraction peaks of (002) and (004) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19...…”

Section: Resultsmentioning

confidence: 99%

Highly Flexible and Planar Supercapacitors Using Graphite Flakes/Polypyrrole in Polymer Lapping Film

Raj

Kim

Cho

et al. 2015

ACS Appl. Mater. Interfaces

124

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Flexible supercapacitor electrodes have been fabricated by simple fabrication technique using graphite nanoflakes on polymer lapping films as flexible substrate. An additional thin layer of conducting polymer polypyrrole over the electrode improved the surface conductivity and exhibited excellent electrochemical performances. Such capacitor films showed better energy density and power density with a maximum capacitance value of 37 mF cm(-2) in a half cell configuration using 1 M H2SO4 electrolyte, 23 mF cm(-2) in full cell, and 6 mF cm(-2) as planar cell configuration using poly(vinyl alcohol) (PVA)/phosphoric acid (H3PO4) solid state electrolyte. Moreover, the graphite nanoflakes/polypyrrole over polymer lapping film demonstrated good flexibility and cyclic stability.

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“…Figure 3C shows characteristic peaks for the wurtzite structure of ZnO at 2θ region of 31. particle size of ZnO NPs was calculated using the Scherrer equation that considers its nano-size range from 8.5 to 13 nm [32]. The XRD pattern of Ppy NPs synthesized via chemical oxidation polymerization illustrated in Figure 3B shows the broad peaks at the 2θ region 18°-30°, revealing the amorphous nature of prepared Ppy NPs [33,34].…”

Section: X-ray Diffraction Patterns (Xrd)mentioning

confidence: 99%

“…FTIR spectrums of the polymeric composite nanofiber before and after silver immobilization are illustrated in Figure 4A,B; both spectrums showed stretching peaks for N-H and C-H deformation vibration that were located at 1026 cm −1 and 1051 cm −1 , respectively. The XRD pattern of Ppy NPs synthesized via chemical oxidation polymerization illustrated in Figure 3B shows the broad peaks at the 2θ region 18-30 • , revealing the amorphous nature of prepared Ppy NPs [33,34].…”

Section: Ftir-spectrophotometric Analysismentioning

confidence: 99%

Photocatalytic Degradation of Malachite Green Dye from Aqueous Solution Using Environmentally Compatible Ag/ZnO Polymeric Nanofibers

Elkady

Shokry

2021

Polymers

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An efficient, environmentally compatible and highly porous, silver surface-modified photocatalytic zinc oxide/cellulose acetate/ polypyrrole ZnO/CA/Ppy hybrid nanofibers matrix was fabricated using an electrospinning technique. Electrospinning parameters such as solution flow rate, applied voltage and the distance between needles to collector were optimized. The optimum homogenous and uniform ZnO/CA/Ppy polymeric composite nanofiber was fabricated through the dispersion of 0.05% wt ZnO into the dissolved hybrid polymeric solution with an average nanofiber diameter ranged between 125 and 170 nm. The fabricated ZnO-polymeric nanofiber was further surface-immobilized with silver nanoparticles to enhance its photocatalytic activity through the reduction of the nanofiber bandgap. A comparative study between ZnO polymeric nanofiber before and after silver immobilization was investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and thermal gravimetric analysis (TGA). The photocatalytic degradation efficiency of the two different prepared nanofibers before and after nanosilver immobilization for malachite green (MG) dye was compared against various experimental parameters. The optimum degradation efficiency of nanosilver surface-modified ZnO-polymeric nanofibers was recorded as 93.5% for malachite green dye after 1 h compared with 63% for ZnO-polymeric nanofibers.

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Study on the preparation and multiproperties of the polypyrrole films doped with different ions

Cited by 18 publications

References 39 publications

A Free-standing Graphene-Polypyrrole Hybrid Paper via Electropolymerization with an Enhanced Areal Capacitance

A Free-standing Graphene-Polypyrrole Hybrid Paper via Electropolymerization with an Enhanced Areal Capacitance

Highly Flexible and Planar Supercapacitors Using Graphite Flakes/Polypyrrole in Polymer Lapping Film

Photocatalytic Degradation of Malachite Green Dye from Aqueous Solution Using Environmentally Compatible Ag/ZnO Polymeric Nanofibers

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