Investigation of graphene based NiS nanocomposite by solvothermal method for energy storage application

Suganya, G.; Gopalakrishnan, Kailash

doi:10.1016/j.mlblux.2021.100112

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…The specific capacitance of 1199 F/g at a current density of 1 A/g is the highest value compared with similar MOF@GO composites (Table ). ,,− ,,− …”

Section: Resultsmentioning

confidence: 99%

In Situ Synthesis of Ni-BTC Metal–Organic Framework@Graphene Oxide Composites for High-Performance Supercapacitor Electrodes

et al. 2023

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In response to serious ecological and environmental problems worldwide, a novel graphene oxide (GO) induction method for the in situ synthesis of GO/metal organic framework (MOF) composites (Ni-BTC@GO) for supercapacitors with excellent performance is presented in this study. For the synthesis of the composites, 1,3,5-benzenetricarboxylic acid (BTC) is used as an organic ligand due to its economic advantages. The optimum amount of GO is determined by a comprehensive analysis of morphological characteristics and electrochemical tests. 3D Ni-BTC@GO composites show a similar spatial structure to that of Ni-BTC, revealing that Ni-BTC could provide an effective framework and avoid GO aggregation. The Ni-BTC@GO composites have a more stable electrolyte–electrode interface and an improved electron transfer route than pristine GO and Ni-BTC. The synergistic effects of GO dispersion and Ni-BTC framework on electrochemical behavior are determined, where Ni-BTC@GO 2 achieves the best performance in energy storage performance. Based on the results, the maximum specific capacitance is 1199 F/g at 1 A/g. Ni-BTC@GO 2 has an excellent cycling stability of 84.47% after 5000 cycles at 10 A/g. Moreover, the assembled asymmetric capacitor exhibits an energy density of 40.89 Wh/kg at 800 W/kg, and it still remains at 24.44 Wh/kg at 7998 W/kg. This material is expected to contribute to the design of excellent GO-based supercapacitor electrodes.

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“…The specific capacitance of 1199 F/g at a current density of 1 A/g is the highest value compared with similar MOF@GO composites (Table ). ,,− ,,− …”

Section: Resultsmentioning

confidence: 99%

In Situ Synthesis of Ni-BTC Metal–Organic Framework@Graphene Oxide Composites for High-Performance Supercapacitor Electrodes

et al. 2023

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“…PVDF polymer binder has been aslo implemented to improve active material’s electrochemical capacitors performance in MnO 2 , , NiS, and MXene based electrodes.…”

Section: Applicationsmentioning

confidence: 99%

Smart and Multifunctional Materials Based on Electroactive Poly(vinylidene fluoride): Recent Advances and Opportunities in Sensors, Actuators, Energy, Environmental, and Biomedical Applications

Costa,

Cardoso,

Martins

et al. 2023

Chem. Rev.

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From scientific and technological points of view, poly(vinylidene fluoride), PVDF, is one of the most exciting polymers due to its overall physicochemical characteristics. This polymer can crystalize into five crystalline phases and can be processed in the form of films, fibers, membranes, and specific microstructures, being the physical properties controllable over a wide range through appropriate chemical modifications. Moreover, PVDF-based materials are characterized by excellent chemical, mechanical, thermal, and radiation resistance, and for their outstanding electroactive properties, including high dielectric, piezoelectric, pyroelectric, and ferroelectric response, being the best among polymer systems and thus noteworthy for an increasing number of technologies. This review summarizes and critically discusses the latest advances in PVDF and its copolymers, composites, and blends, including their main characteristics and processability, together with their tailorability and implementation in areas including sensors, actuators, energy harvesting and storage devices, environmental membranes, microfluidic, tissue engineering, and antimicrobial applications. The main conclusions, challenges and future trends concerning materials and application areas are also presented.

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“…The hexagonal NiS is known for energy-related applications such as hydrogen evolution reactions, supercapacitors, dye-sensitized solar cells, and lithium-ion batteries (7,8) . Various preparation methods were reported in the literature to deposit NiS such as hydrothermal, microwave synthesis, solvothermal, precipitation, spray pyrolysis, ionic exchange process, screen printing, polyol synthesis, and chemical vapour deposition (9)(10)(11) . Among these methods, chemical bath deposition (CBD) is a simple, inexpensive method that does not require sophisticated instruments, minute wastage of precursor materials, and the possibility of film deposition over large surface areas.…”

Section: Introductionmentioning

confidence: 99%

Effect of Deposition Time on the Properties of NiS Films Prepared by Chemical Bath Deposition

Basha¹,

Guddeti²,

Kotte³

2022

IJST

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Objectives: To study the influence of deposition time on the physical behavior of NiS films formed by chemical bath deposition (CBD). Methods: Polycrystalline NiS thin films were deposited by using CBD method on glass substrates by varying the deposition time in the range of 60-150 min with the other growth conditions kept constant. The physical properties were measured using an X-ray diffractometer, Scanning Electron Microscopy with Energy Dispersive X-ray analyzer, and Fourier transform infrared spectra. Finally, the optical and electrical properties of the films were analyzed by using UV-Vis spectrophotometer and linear four-probe point method respectively. Findings: The X-ray Diffraction (XRD) studies showed polycrystalline nature of the films with hexagonal structure, confirmed by the Rietveld refinement analysis. The calculated crystallite size varied from 6 nm to 19 nm with the increase in deposition time. The EDS analysis revealed the stoichiometry of Ni and S in the samples. The optical bandgap decreases from 2.06 eV to 1.93 eV with the increase in deposition time. The films synthesized using a deposition time of 120 min at 80 • C showed a high electrical conductivity of 48.3 S/cm at room temperature with activation energy of 0.16 eV. Novelty: NiS thin films were deposited by the CBD method using different deposition times varying from 60 min. to 150 min., keeping the bath temperature constant at 80 • C for the first time. The Rietveld refinement analysis was the first of its kind, reported on the structural evaluation of NiS layers. These films were formed using eco-friendly materials adding value to the solar cell application.

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Investigation of graphene based NiS nanocomposite by solvothermal method for energy storage application

Cited by 6 publications

References 18 publications

In Situ Synthesis of Ni-BTC Metal–Organic Framework@Graphene Oxide Composites for High-Performance Supercapacitor Electrodes

In Situ Synthesis of Ni-BTC Metal–Organic Framework@Graphene Oxide Composites for High-Performance Supercapacitor Electrodes

Smart and Multifunctional Materials Based on Electroactive Poly(vinylidene fluoride): Recent Advances and Opportunities in Sensors, Actuators, Energy, Environmental, and Biomedical Applications

Effect of Deposition Time on the Properties of NiS Films Prepared by Chemical Bath Deposition

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