Electropolymerization of polyaniline on titanium oxide nanotubes for supercapacitor application

Mujawar, S.H.; Ambade, Swapnil B.; Battumur, T.; Ambade, Rohan B.; Lee, Soo-Hyoung

doi:10.1016/j.electacta.2011.02.043

Cited by 147 publications

(49 citation statements)

References 35 publications

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“…The specific capacitance values change with the scan rate, as shown in Figure 7d and higher specific capacitance was observed at low scan rate. As the scan rate has increased, the specific capacitance has decreased, which may be explained by the increase of ions concentration at the electrode/electrolyte interface while the diffusion rate of electrolyte from electrolyte/ electrode interface remain limited to assure electrochemical reactions [45]. Moreover, the increasing the PAnS content in the composites (from ~30% tõ 100%) is accompanied by increasing of the specific capacitance due to PAnS faradaic capacitance.…”

Section: Electrochemical Performancesmentioning

confidence: 94%

Water-soluble polyaniline/graphene composites as materials for energy storage applications

Solonaru¹,

Grigoraş²

2017

Express Polym. Lett.

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Abstract. Three water-dispersable composites have been synthesized by in situ chemical oxidative polymerization of aniline N-propanesulfonic acid (AnS) in reduced graphene oxide (r-GO) dispersion, in an ice bath at 0°C and in the absence of any surfactant. The mass ratio between r-GO and aniline monomer have been established as (m r-GO :m AnS ) = 1:1, 1:2 and 1:5 while in the composites, the mass ratio between r-GO and polyaniline was found: 1:0.3, 1:0.5 and 1:1, respectively. The molecular structure, morphology, and optical properties of the composites were analyzed through Fourier transform infrared (FTIR), Raman and ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Electrochemical performances for energy storage were evaluated by cyclic voltammetry and galvanostatic charge/discharge measurements with 1M H 2 SO 4 as electrolyte in a three-electrode cell. The composite with the mass ratio (m r-GO :m PAnS ) = 1:1 has showed good capacitive behavior with a specific capacitance of 1019 F/g at scan rate of 1 mV/s calculated from integrated area of cyclic voltammogram curve and a retention life of 80% after 100 cycles. These results indicate that the composites prepared by chemical oxidative polymerization are promising materials for electrode supercapacitors.

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Section: Electrochemical Performancesmentioning

confidence: 94%

Water-soluble polyaniline/graphene composites as materials for energy storage applications

Solonaru¹,

Grigoraş²

2017

Express Polym. Lett.

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“…At a higher scan rate, the concentration of the ions at the electrode/electrolyte interface is high and the diffusion rate for the electrolyte from the electrode/electrolyte interface to electrode may be not enough to satisfy the electrochemical reactions. 41 The long-term cyclic stability of the device was studied using cyclic voltammetry. Fig.…”

mentioning

confidence: 99%

New insight into high-temperature driven morphology reliant CoMoO₄ flexible supercapacitors

et al. 2015

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A facile hydrothermal method has been successfully developed for the synthesis of cobalt molybdate (CoMoO 4 ). The morphology of the CoMoO 4 was tailored by varying the growth conditions, and as a result different morphologies have been achieved such as cauliflower, brick and nano-sphere structures. The proposed potential use of the CoMoO 4 as an electrode material for flexible supercapacitor applications was examined using cyclic voltammetry (CV) and galvanostatic charge-discharge measurements. It was observed that the specific capacitance of CoMoO 4 depends on its morphology. A specific capacitance of 169 F g À1 in 3 M KOH at a current of 1 mA was observed for the nano-sphered CoMoO 4 .The effect of the electrolyte (LiOH, NaOH and KOH) on the electrochemical properties of the CoMoO 4 was also investigated. The specific capacitance depends on the type of electrolyte and showed the highest value of 259 F g À1 in a 3 M NaOH electrolyte. Furthermore, these electrodes showed excellent cyclic stability. We have fabricated a flexible supercapacitor device by sandwiching two electrodes separated by an ion-transporting layer. The device shows no degradation in its capacitive properties upon bending and shows improved stability with the number of cyclic CV performances. The effect of temperature on the charge storage properties of the device was also investigated for high temperature applications.The specific capacitance of the device significantly increased when the operational temperature of the device was elevated from 10 to 70 1C. Hence, this study provides an ultimate facile method to synthesize morphology controlled cobalt molybdate for applications in the next generation of flexible energy storage devices, which can perform more efficiently at a higher temperature.

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“…28 Secondly, nanostructured materials like AAO have a lot of applications because of their novel optical, catalytic and electrical properties, and used in some applications in nanoelectronic devices, catalysts and nanosensors. 29,30 The acid-base behavior of amino acids is pH sensitive, and there is no exception to this rule for L-alanine which has two pKa values and three possible 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 11 structures (Scheme 1). Fig.…”

Section: Computational Detailsmentioning

confidence: 98%

Electrosynthesis of Poly(alanine)-Like Peptides in Concentrated Alanine Based Electrolytes, Characterization Coupled to DFT Study and Application to pH Proton Receptor

et al. 2014

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The anodic oxidation of concentrated L-alanine on smooth electrodes such as platinum and glassy carbon electrodes was studied. Contrary to the previous studies performed up to now with diluted L-alanine, the electrochemical process generated here results in a completely different situation. The oxidation on smooth platinum was carried out by electrochemical quartz crystal microbalance (EQCM) coupled to cyclic voltammetry technique. The effects of concentration, scan rate and pH (zwitterion at pH=6 and alkaline media at pH=13) on potential values were examined. Glassy carbon and smooth gold electrodes showed the same behavior as on smooth platinum electrode. Spectroscopic analysis such as attenuated total reflectance FT infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) were used to characterize the resulting thin film coatings. The presence of peptide bonds is clearly highlighted. DFT modelization of poly(alaninate) strand on Pt(001) coupled to spectroscopic measurements are in favor of L-alanine electropolymerization into poly-L-alanine in an irreversible way. Due to its proton receptor behavior, electrosynthesized poly-L-alanine on smooth platinum electrode was tested as a whole solid transducer for pH sensing.

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Electropolymerization of polyaniline on titanium oxide nanotubes for supercapacitor application

Cited by 147 publications

References 35 publications

Water-soluble polyaniline/graphene composites as materials for energy storage applications

Water-soluble polyaniline/graphene composites as materials for energy storage applications

New insight into high-temperature driven morphology reliant CoMoO₄ flexible supercapacitors

Electrosynthesis of Poly(alanine)-Like Peptides in Concentrated Alanine Based Electrolytes, Characterization Coupled to DFT Study and Application to pH Proton Receptor

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Electropolymerization of polyaniline on titanium oxide nanotubes for supercapacitor application

Cited by 147 publications

References 35 publications

Water-soluble polyaniline/graphene composites as materials for energy storage applications

Water-soluble polyaniline/graphene composites as materials for energy storage applications

New insight into high-temperature driven morphology reliant CoMoO4 flexible supercapacitors

Electrosynthesis of Poly(alanine)-Like Peptides in Concentrated Alanine Based Electrolytes, Characterization Coupled to DFT Study and Application to pH Proton Receptor

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New insight into high-temperature driven morphology reliant CoMoO₄ flexible supercapacitors