Polypyrrole/hexadecylpyridinium chloride-modified graphite oxide composites: Fabrication, characterization, and application in supercapacitors

Li, Congcong; Wang, Bin; Tan, Lin; Chen, Nali; Wang, Nuoxin; Chen, Baiyi

doi:10.1016/j.jpowsour.2013.08.002

Cited by 78 publications

(38 citation statements)

References 31 publications

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“…The capacitance of PPy coated nylon lycra fabric decreases severely after 500 charge/discharge cycles, only about 12.5% of the initial capacitance [48]. The specific capacitance of PPy/ modified graphite oxide, PPy/graphite oxide and PPy shows 16.2%, 34.3% and 41.4% degradation after as many as 1000 cycles at 1.00 A g À1 [49].…”

Section: Galvanostatic Charge-discharge Measurementsmentioning

confidence: 96%

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Karaca

Pekmez

2014

Electrochimica Acta

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Section: Galvanostatic Charge-discharge Measurementsmentioning

confidence: 96%

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Karaca

Pekmez

2014

Electrochimica Acta

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“…The latter may aggravate the mechanical properties of CPEs which can be reflected in the viscoelastic variations of polymer electrodes during electrochemical cycling [11][12][13]. Many CPEs have been studied for their appealing electrochemical properties [14], such as poly(3,4-ethylenedioxythiophene) (PEDOT) [15,16], polypyrrole (PPy) [17][18][19], polyaniline (PANI) [8,20] and polythiophene (PHT) [21,22]. PPy has been exploited in considerable amount of researches, due to its relatively higher pseudocapacitance and lower cost, as well as its particularly supreme flexibility in morphology and structure [23].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical and viscoelastic evolution of dodecyl sulfate-doped polypyrrole films during electrochemical cycling

Gao

Sel

Perrot

2017

Electrochimica Acta

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To cite this version:Wanli Gao, Ozlem Sel, Hubert Perrot. Electrochemical and viscoelastic evolution of dodecyl sulfatedoped polypyrrole films during electrochemical cycling. Electrochimica Acta, Elsevier, 2017, 233, pp.262 -273. 10 ABSTRACT:The correlation between electrochemical and viscoelastic properties of electrodeposited dodecylsulfate-doped polypyrrole (PPy-DS) during electrochemical cycling process was described through combining electrochemical quartz-crystal microbalance (EQCM), ac-electrogravimetric characterizations and electroacoustic measurements. As the PPy-DS electrode evolves during the course of consecutive cycling in aqueous NaCl electrolyte, the film exhibits (i) an obvious ion-selective transition from cations to anions in the charge compensation process; (ii) an inferior electrochemical performance accompanied with increased stiffness (increased storage moduli, G´); and (iii) depleted capability of ionic exchange through film/electrolyte interface. PPy-DS conducting polymer electrodes (CPEs) are of interest in energy storage and the relationship between electrochemical and viscoelastic properties during electrochemical cycling process is essential for promoting the performance of these devices. In this perspective, ac-electrogravimetry combined with electroacoustic measurements can be suggested as an alternative method to synchronously probe the electrochemical and mechanical evolution and has the potential to offer a generalized route to study aging mechanism of CPEs.

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“…3 shows that GO typical diffraction peaks appeared at 11.2 and 42.6 . 26 In the diffraction pattern of the magnetic PPy-GO, ve peaks were observed at 30. Moreover, no peaks of Ppy were observed; these peaks may have been completely covered by the strong diffraction peaks of Fe 3 O 4 due to the effects of the magnetic nanoparticles in the magnetic PPy-GO.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of mercury(ii) with an Fe₃O₄ magnetic polypyrrole–graphene oxide nanocomposite

et al. 2017

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To enhance the ability to remove mercury(II) from aqueous media, an Fe 3 O 4 magnetic nanocomposite (PPy-GO) composed of polypyrrole (PPy) and graphene oxide (GO) was synthesized in situ and characterized via scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectrometry (XPS), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), zeta potential analysis, vibrating sample magnetometer (VSM) and the Brunauer-Emmett-Teller (BET) method. The performance of the magnetic PPy-GO for adsorbing mercury(II) from water along with the effects of solution pH, adsorbent dosage, coexisting ions, reaction time and temperature were studied in detail. The adsorption kinetics, isotherms and thermodynamics were investigated in detail to gain insights into the adsorption process. The results show that the BET surface area of the magnetic PPy-GO reached 1737.6 m 2 g À1. The Langmuir capacity of the magnetic PPy-GO for mercury(II) adsorption was 400.0 mg g À1 at 300 K and pH 7 AE 0.1.After adsorption, the magnetic PPy-GO nanocomposite could be efficiently separated from water via a magnetic field. The adsorption process was endothermic and spontaneous and occurred in accord with the Langmuir and pseudo-second-order models. The overall adsorption of mercury(II) not only involved chemisorption, but was also partially governed by intra-particle diffusion. Data from the preliminary application of magnetic PPy-GO to remove heavy metals from real electroplating effluent indicated a high removal efficiency of over 99% for mercury(II). Finally, a possible adsorption mechanism was discussed. All data showed that the magnetic PPy-GO material is a promising adsorbent to remove mercury(II) from aqueous media.

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Polypyrrole/hexadecylpyridinium chloride-modified graphite oxide composites: Fabrication, characterization, and application in supercapacitors

Cited by 78 publications

References 31 publications

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Electrochemical and viscoelastic evolution of dodecyl sulfate-doped polypyrrole films during electrochemical cycling

Adsorption of mercury(ii) with an Fe₃O₄ magnetic polypyrrole–graphene oxide nanocomposite

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Polypyrrole/hexadecylpyridinium chloride-modified graphite oxide composites: Fabrication, characterization, and application in supercapacitors

Cited by 78 publications

References 31 publications

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

Electrochemical and viscoelastic evolution of dodecyl sulfate-doped polypyrrole films during electrochemical cycling

Adsorption of mercury(ii) with an Fe3O4 magnetic polypyrrole–graphene oxide nanocomposite

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Adsorption of mercury(ii) with an Fe₃O₄ magnetic polypyrrole–graphene oxide nanocomposite