Experimental and Theoretical Investigation of the Energy-Storage Behavior of a Polyaniline-Linked Reduced-Graphene-Oxide–
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 Ternary Nanohybrid Electrode

Kandasamy, Manikandan; Seetharaman, Amreetha; Chakraborty, Brahmananda; Babu, I. Manohara; William, J. Johnson; Muralidharan, G.; Jothivenkatachalam, Kandasamy; Dhanuskodi, S.

doi:10.1103/physrevapplied.14.024067

Cited by 24 publications

(13 citation statements)

References 76 publications

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“…Different magnifications of SEM have been applied to reveal the morphological features of the pristine and copolymer composites. Figure 2a shows that pristine PANI appeared as nanoparticles of various sizes ranging from 30 to 80 nm [45]. The nanoparticles of PANI combine to assume the shape of fibres, which mingle to form a fibrous network [46].…”

Section: Sem Analysismentioning

confidence: 99%

“…It also facilitates the anchoring of different organic and inorganic groups to form composites. Further, water molecules can be readily adsorbed on the surface of GO due to the presence of oxygenated functional groups, which is responsible for the more interplanar distance in GO sheets (0.87 nm) than graphite (0.340 nm) [10,39,45,47,[55][56][57] Figure 6a. The pristine PANI is identified by the appearance of XRD peaks indexed at 25.21 • , 21.07 • and 15.2 • synchronized with the semi-crystalline plane at (200), (020), and (011), respectively, validating the successful synthesis of polyaniline [7,47,56,58].…”

Section: Xrd Analysismentioning

confidence: 99%

“…The stretching vibrations of C-N and C=N bond in PANI are credited to IR band at 1295 cm −1 . The IR bands that occurred at 1125, 1241, and 1295 cm −1 are considered the characteristic IR peaks of pristine PANI[45,47,51].The IR identification bands for melamine appeared at 3469 and 3430 cm −1 . These IR bands are credited to the stretching vibrations of -NH 2 bond, as demonstrated in Figure5a.…”

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confidence: 99%

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Evaluation of the Synergistic Effect of Graphene Oxide Sheets and Co3O4 Wrapped with Vertically Aligned Arrays of Poly (Aniline-Co-Melamine) Nanofibers for Energy Storage Applications

et al. 2022

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In the present study, Co3O4 and graphene oxide (GO) are used as reinforcement materials in a copolymer matrix of poly(aniline-co-melamine) to synthesize ternary composites. The nanocomposite was prepared by oxidative in-situ polymerization and used as an electrode material for energy storage. The SEM images revealed the vertically aligned arrays of copolymer nanofibers, which entirely wrapped the GO sheets and Co3O4 nanoparticles. The EDX and mapping analysis confirmed the elemental composition and uniform distribution in the composite. The XRD patterns unveiled composites’ phase purity and crystallinity through characteristic peaks appearing at their respective 2θ values in the XRD spectrum. The FTIR spectrums endorse the successful synthesis of composites, whereas TGA analysis revealed the higher thermal stability of composites. The cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy are employed to elucidate the electrochemical features of electrodes. The ternary composite PMCoG-2 displayed the highest specific capacity of 134.36 C/g with 6 phr of GO, whereas PMCoG-1 and PMCoG-3 exhibited the specific capacities of 100.63 and 118.4 C/g having 3 phr and 12 phr GO at a scan rate of 0.003 V/s, respectively. The best electrochemical performance of PMCoG-2 is credited to the synergistic effect of constituents of the composite material.

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Section: Sem Analysismentioning

confidence: 99%

Section: Xrd Analysismentioning

confidence: 99%

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confidence: 99%

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Evaluation of the Synergistic Effect of Graphene Oxide Sheets and Co3O4 Wrapped with Vertically Aligned Arrays of Poly (Aniline-Co-Melamine) Nanofibers for Energy Storage Applications

et al. 2022

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“…[43][44][45][46] Due to its excellent mechanical and electrical properties, rGO is often one of the most outstanding candidates for preparing composite electrode materials in combination with semiconductor materials. [47][48][49] Here, the β-NiS@rGO composite has been prepared by hydrothermally reducing GO after coating it on the β-NiS surface. The XRD pattern of β-NiS@rGO is substantially identical to that of rhombohedral β-NiS (PDF #12-0041) as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Controlling the electrochemical activity of dahlia-like β-NiS@rGO by interface polarization

et al. 2023

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“…The transport properties of GO can be influenced by the multilayered configuration [16] and presence of defects [17]. All these effects can be exploited in different fields [18] and applications from batteries [19][20][21][22], energy storage [23][24][25], electronics [26][27][28][29][30][31][32][33], catalysis [34], metal sorption [35], hydrogen storage [36], as well as to obtain graphene oxide monolayers [37][38][39][40][41][42][43][44], films, fibers, and membranes [45].…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide: Comparisons between Experimental and Computational Simulation of HR-TEM Images

Prías‐Barragán

Mendoza

Velasco

et al. 2022

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Graphene oxide (GO) has been extensively employed in a wide range of applications, from flexible electronics to energy storage. However, an attempt to relate experimental and computational simulations of HR-TEM images has not been explored from an atomistic approach. This work conducted comparisons between experimental and computational simulations of HR-TEM images in GO, using molecular dynamics simulations and a many-body potential. We designed a heating-quenching procedure in a thermodynamic region to study a sample of 7,479 atomic arrangements produced at different densities, quench rates, and using graphene unit cells as precursor structures. The HR-TEM experiments were carried out at 5-nm scale. All simulated samples were numerically characterized through the calculation of the free volumes, surface areas, radial distribution functions, and structure factors. We found particularly useful how the reactive potential energy could disorder the GO structure. It was possible to identify the atomistic pattern formations of hydroxyl and epoxy bridges in GO. The experimental and simulated electron diffraction patterns exhibited polycrystalline structures with interactions of first and second neighbours, and a 64.68% coincidence between standard deviations/mean relations obtained from histogram analysis. These results suggest that our calculus, based on reactive potential, is compatible with available experimental data and potential applications of high-performance GO materials in electronics. In such case, our calculus is a reliable choice to produce GO structures with low computational cost.

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Experimental and Theoretical Investigation of the Energy-Storage Behavior of a Polyaniline-Linked Reduced-Graphene-Oxide– SnO2 Ternary Nanohybrid Electrode

Cited by 24 publications

References 76 publications

Evaluation of the Synergistic Effect of Graphene Oxide Sheets and Co3O4 Wrapped with Vertically Aligned Arrays of Poly (Aniline-Co-Melamine) Nanofibers for Energy Storage Applications

Evaluation of the Synergistic Effect of Graphene Oxide Sheets and Co3O4 Wrapped with Vertically Aligned Arrays of Poly (Aniline-Co-Melamine) Nanofibers for Energy Storage Applications

Controlling the electrochemical activity of dahlia-like β-NiS@rGO by interface polarization

Graphene Oxide: Comparisons between Experimental and Computational Simulation of HR-TEM Images

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