Effect of surface area on electrical properties of NiCo2O4-reduced graphene oxide nanocomposites for supercapacitor electrodes applications

Manalu, Andriono; Tarigan, Kerista; Humaidi, Syahrul; Ginting, Masno; Manalu, Istas Pratomo; Ikhwanuddin,

doi:10.1016/j.mset.2022.10.004

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…The isotherms of the unmodified Ni foam and the NiCo 2 O 4 @Ni foam sample can be categorized as typical type IV with an H 3 hysteresis loop, indicating the existence of a mesoporous structure in the materials. 41–44 As shown in Fig. 5, Ni foam exhibits a surface area and a pore volume of 10.294 m 2 g −1 and 0.026 cm 3 g −1 , respectively, while NiCo 2 O 4 @Ni foam shows an increase in both the surface area and pore volume to 17.944 m 2 g −1 and 0.045 cm 3 g −1 , respectively.…”

Section: Resultsmentioning

confidence: 91%

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo₂O₄ as a promising non-enzymatic glucose sensor

Eprilia,

Sanjaya,

Pramadewandaru

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 91%

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo₂O₄ as a promising non-enzymatic glucose sensor

Eprilia,

Sanjaya,

Pramadewandaru

et al. 2024

RSC Adv.

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“…Reduced graphene oxide and plenty of its composites are extensively employed in optical, optoelectronic, bioengineering, catalytic, biosensor, magnetic, electrochemical sensor and energy storage [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Moreover, rGO based samples act as efficient adsorbents for organic pollutants such as dyes, pesticides, and antibiotics [31][32][33]. The rGO based samples were utilized as a support for many catalysts such as ZnO, Pt, Au, and Fe 3 O 4 [11].…”

Section: Introductionmentioning

confidence: 99%

Congo red dye reduction mediated by the electron (e⁻) transfer route of BH₄ ⁻ ions using synthesized NiCo₂O₄/rGO hybrid nanosheets

Govinda,

Prasad

et al. 2024

Mater. Res. Express

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The treatment of toxic organic pollutants is extremely important for the conservation of clean air, soil, and water. In this study, (reduced graphene oxide) NiCo2O4/ rGO hybrid nanocomposite was prepared by a facile hydrothermal technique and employed for organic dye degradation from wastewater. The synthesized NiCo2O4/rGO hybrid nanocomposite was studied using FTIR, XRD, SEM, TEM, BET, Raman spectroscopy, and UV-visible. The physical characterizations prove the deposition of NiCo2O4 particles on the rGO surface. The transmission electron microscope image demonstrated that the NiCo2O4 particles with an average size of ~46 nm was dispersed on the rGO surface. The obtained nanoparticles show a higher specific surface area of 56.4 m2/g. Adsorption dynamics as investigated by time and concentration variation show that the adsorption data follows pseudosecond order kinetics and the Langmuir isotherm model, with a maximum adsorption capacity of 106.2 mg/g, indicating homogeneous physiochemical adsorption of CR dye on the adsorbent surface. Besides, the catalytic effectiveness of synthesized nanocomposite towards Congo red (CR) dye reduction mediated by the electron (e-) transfer route of BH4- ions was explained in detail. The electrostatic interaction used between the NiCo2O4/rGO hybrid composite and Congo red increased the degradation effectiveness of the dye sample. 

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“…With metal oxide electrodes whose electric charge transfer is based on reversible Faradaic processes (Najib and Erdem, 2019) , including redox processes on metal oxides, reversible adsorption, and reversible electrochemical doping on conductive polymers for electrodes, pseudo capacitors have a high application power (Abdah et al, 2020) . These capacitors generally have a greater energy density and specific capacitance than EDLCs but lower stability (Manalu et al, 2022;Shi et al, 2011). In order to improve the performance of the pseudocapacitor, more research is required.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Synthesized NiCo2O4 with Trisodium Citrate for Supercapacitor Material: A Preliminary Study

Manalu

Manalu²,

Panjaitan

et al. 2023

Sci. Technol. Indones

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Supercapacitors can be called electrostatic double-layer capacitors (EDLCs) or pseudo-capacitors based on their energy storage mechanism. Pseudo-capacitors with metal oxide electrodes that transmit electric charge offer great application power but low stability. This study aims to characterize trisodium citrate (TSC) modified NiCo2O4/rGO electrodes as a preliminary study for the NiCo2O4 nanoparticle pseudo-capacitor. The materials were characterized using SEM (Scanning Electron Microscopy), XRD (X-Ray Diffractometer), FT-Raman (Fourier Transform Raman Spectroscopy), and FTIR (Fourier Transform Infrared Spectroscopy). All of these analyses confirmed that NiCo2O4 was manufactured successfully using TSC. At XRD, the angles of 2????, namely 45.04 and 53.34°, matched the plane of the cubic phase nanorod crystals of NiCo2O4 with values of 400 and 511, respectively. In the Raman examination, the presence of rGO, which increased the crystallinity of NiCo2O4 nanoparticles, was confirmed. FTIR analysis indicated that the 1550-1600 cm−1 corresponds to a C=C functional group in an aromatic ring or a C=O ????-???? structure, and the wavenumber of 2300 cm−1 corresponds to the OH group in TSC, an alkanoate derivative. SEM analysis determined that NiCo2O4 nanoparticles with 1 mmol TSC are the ideal material for supercapacitor electrodes, as the structure is the most uniform, soft, and tidy. Further analysis is needed to confirm the stability of the modified material.

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Effect of surface area on electrical properties of NiCo2O4-reduced graphene oxide nanocomposites for supercapacitor electrodes applications

Cited by 5 publications

References 33 publications

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo₂O₄ as a promising non-enzymatic glucose sensor

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo₂O₄ as a promising non-enzymatic glucose sensor

Congo red dye reduction mediated by the electron (e⁻) transfer route of BH₄ ⁻ ions using synthesized NiCo₂O₄/rGO hybrid nanosheets

Characterization of Synthesized NiCo2O4 with Trisodium Citrate for Supercapacitor Material: A Preliminary Study

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Effect of surface area on electrical properties of NiCo2O4-reduced graphene oxide nanocomposites for supercapacitor electrodes applications

Cited by 5 publications

References 33 publications

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo2O4 as a promising non-enzymatic glucose sensor

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo2O4 as a promising non-enzymatic glucose sensor

Congo red dye reduction mediated by the electron (e−) transfer route of BH4 − ions using synthesized NiCo2O4/rGO hybrid nanosheets

Characterization of Synthesized NiCo2O4 with Trisodium Citrate for Supercapacitor Material: A Preliminary Study

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Preparation of nickel foam modified by multiwalled hollow spheres of NiCo₂O₄ as a promising non-enzymatic glucose sensor

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo₂O₄ as a promising non-enzymatic glucose sensor

Congo red dye reduction mediated by the electron (e⁻) transfer route of BH₄ ⁻ ions using synthesized NiCo₂O₄/rGO hybrid nanosheets