Synthesis and characterization of copper particles decorated reduced graphene oxide nano composites for the application of supercapacitors

Kumar, B. Varun; Balla, Putra Kumar; Chirauri, Satya Kamal; Rao, T. K. Visweswara; Ramakrishna, Y.; Rao, K. Ramchandara

doi:10.1063/1.5047973

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…The SEM image shows the spherical particles of MgO with a fuzz-like structure distributed over GO in abundance, having a particle size of 0.4 μm. 56 Fig. 2 shows a prismatic plate-like structure of Bi 2 O 3 , approximately 15 mm in average, indicating that recrystallization has occurred at some NaOH concentration, which improved its crystallinity.…”

Section: Resultsmentioning

confidence: 98%

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi₂O₃/MgO/GO synthesized by a co-precipitation technique

et al. 2022

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Section: Resultsmentioning

confidence: 98%

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi₂O₃/MgO/GO synthesized by a co-precipitation technique

et al. 2022

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“…The advantage of the co-precipitation procedure is the ability for extraction of several organic compounds resulting in effective designing of graphene oxide on the layer of BiCr 2 O 4 nanoparticles and suppression of GO peak in nanocomposite framework. 43 Debye-Scherrer equation…”

Section: Resultsmentioning

confidence: 99%

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr₂O₄/GO Nanocomposite

Hameed,

Rani,

Habila

et al. 2023

ECS J. Solid State Sci. Technol.

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Binary nanocomposite of BiCr2O4/GO synthesized by co-precipitation method where BiCr2O4 was synthesized by sol-gel and GO was prepared by Hummer’s method has been reported. From XRD analysis, average crystalline size of GO, BiCr2O4 and BiCr2O4/GO are 5.55 nm, 6.85 nm and 5.27 nm respectively. From SEM micrograph it is quite clear that BiCr2O4/GO nanoparticles retain their quasi spherical grains with in the nanocomposite whereas as the presence of Bi, Cr and Si were evident from EDS spectra resulting GO suppressed peak. PL spectra for binary BiCr2O4/GO nanocomposite shows the estimated band gap energy of 3.5 eV which lies in the band gap energy range of GO about 3.1–3.9 eV. Bond formation in BiCr2O4/GO nanocomposite was depicted by Raman band shift. These all results support nanocomposite based nanomaterial suitability for its application in supercapacitor based energy storage materials.

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“…Graphene is a unique material composed of a single layer of carbon atoms arranged in a hexagonal lattice. Its exceptional electrical conductivity, chemical stability, and high mechanical strength make it a promising material for various applications [8,18,[24][25][26][27][28][29][30][31]. Recently, graphene has been utilized to encapsulate metal nanoparticles (MNPs) to create multilayer graphene-wrapped metal nanoparticles (MLG-MNPs).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, graphene has been utilized to encapsulate metal nanoparticles (MNPs) to create multilayer graphene-wrapped metal nanoparticles (MLG-MNPs). This prevents the accumulation of surface charges, provides hierarchical electron conductivity, and supports additional surface area for charge storage [31][32][33][34][35]. Kaverlavani et al synthesized graphene-wrapped nanoporous CuCo 2 O 4 hollow spheres electrodes for supercapacitor via chemical exfoliation [32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of non-planar graphene-wrapped copper nanoparticles with iron(III) oxide decoration for high performance supercapacitors

Chu

Huang³

et al. 2023

Nanotechnology

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The performance of supercapacitors strongly depends on the electrochemical characterizations of electrode materials. Herein, a composite material consisted of iron(III) oxide (Fe2O3) and multilayer graphene-wrapped copper nanoparticles (Fe2O3/MLG-Cu NPs) is fabricated on a flexible carbon cloth (CC) substrate via two-step synthesis process for supercapacitor application. Where, MLG-Cu NPs are prepared on CC by one-step chemical vapor deposition (CVD) synthesis approach; thereafter, the Fe2O3 is further deposited on the MLG-Cu NPs/CC via successive ionic layer adsorption and reaction (SILAR) method. The related material characterizations of Fe2O3/MLG-Cu NPs are well investigated by scanning electron microscopic (SEM), high resolution transmission electron microscopy (HR–TEM), Raman spectrometer and X-ray photoelectron spectroscopy (XPS); the electrochemical behaviors of the pertinent electrodes are studied by cyclic voltammogram (CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS) measurements. The flexible electrode with Fe2O3/MLG-Cu NPs composites exhibits the best specific capacitance of 1092.6 mF cm-2 at 1 A g-1, which is much higher than those of electrodes with Fe2O3 (863.7 mF cm-2), MLG-Cu NPs (257.4 mF cm-2), multilayer graphene hollow balls (MLGHBs, 14.4 mF cm-2) and Fe2O3/MLGHBs (287.2 mF cm-2). Fe2O3/MLG-Cu NPs electrode also exhibits an excellent GCD durability, and its capacitance remains 90% of its original value after 1200 cycles of the GCD process.　Finally, a supercapacitor system consisted of four Fe2O3/MLG-Cu NPs/CC electrodes can efficiently power various light-emitting diodes (i.e., red, yellow, green, and blue lights), demonstrating the practical application of Fe2O3/MLG-Cu NPs/CC electrode.

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Synthesis and characterization of copper particles decorated reduced graphene oxide nano composites for the application of supercapacitors

Cited by 8 publications

References 30 publications

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi₂O₃/MgO/GO synthesized by a co-precipitation technique

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi₂O₃/MgO/GO synthesized by a co-precipitation technique

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr₂O₄/GO Nanocomposite

Synthesis of non-planar graphene-wrapped copper nanoparticles with iron(III) oxide decoration for high performance supercapacitors

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Synthesis and characterization of copper particles decorated reduced graphene oxide nano composites for the application of supercapacitors

Cited by 8 publications

References 30 publications

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi2O3/MgO/GO synthesized by a co-precipitation technique

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi2O3/MgO/GO synthesized by a co-precipitation technique

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr2O4/GO Nanocomposite

Synthesis of non-planar graphene-wrapped copper nanoparticles with iron(III) oxide decoration for high performance supercapacitors

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Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi₂O₃/MgO/GO synthesized by a co-precipitation technique

Morphological and optical investigation of 2D material-based ternary nanocomposite: Bi₂O₃/MgO/GO synthesized by a co-precipitation technique

Exploring the Synergistic Structural and Optical Properties of Co-Precipitated BiCr₂O₄/GO Nanocomposite