Modified electrochemical charge storage properties of h-BN/rGO superlattice through the transition from n to p type semiconductor by fluorine doping

Saha, Sanjit; Samanta, Pranab; Murmu, Naresh Chandra; Banerjee, Amit; Ganesh, R. Sankar; Kuila, Tapas

doi:10.1016/j.cej.2018.01.141

Cited by 33 publications

(22 citation statements)

References 38 publications

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“…Figure shows the Raman spectroscopy of BNG, BNG_IN1, BNG_IN2 and BNG_IN3, respectively. BNG exhibited only two distinct peaks at 1350 and 1584 cm −1 corresponding to the D and G band, respectively ,. The origin of G band is the graphitic carbon ( sp 2 ) ,.…”

Section: Resultsmentioning

confidence: 98%

“…BNG exhibited only two distinct peaks at 1350 and 1584 cm −1 corresponding to the D and G band, respectively ,. The origin of G band is the graphitic carbon ( sp 2 ) ,. On the other hand, D band arose due to the presence of defect or destruction of sp 2 hybridization.…”

Section: Resultsmentioning

confidence: 99%

“…However, the low energy density is the major limitations of supercapacitor for practical applications. The charge storage mechanism of supercapacitor comprised of electrostatic interaction, chemisorption and battery like redox reaction . The electrochemical double layer capacitance (EDLC) due to the electrostatic interaction is the key factor behind the high power density of supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

“…The use of rGO/h‐BN superlattice can serve dual purpose. Due to the difference in electronegativity of C, B and N, rGO/h‐BN superlattice provides additional redox capacitance trough chemi‐adsorption of –OH ions in alkaline medium ,. In addition, different electronegativity of C, B and N create active site to attract metal cation which leads to the controlled deposition of different metal oxide on rGO/h‐BN surface.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe₃O₄/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

et al. 2019

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3D Fe3O4/NiO was grafted on to the 2D rGO/h‐BN by electro‐precipitation method. Nitrogen of h‐BN moiety and oxygen functional groups of rGO played the role of negative active site to trap the metallic cations. Electrochemical charge storage mechanism was optimized by controlling the stoichiometry and defect contents of Fe3O4/NiO@rGO/h‐BN. Stoichiometry of the electro‐precipitated samples was tailored in presence of negative active sites of rGO/h‐BN and applied D.C. bias of the electrochemical bath. In addition, the nucleation and growth of metal oxides were influenced by the stacking and vacancy defects of rGO/h‐BN sheets. High specific capacitance (1328 F g−1) of Fe3O4/NiO@rGO/h‐BN was attributed to the synergistic effect of electrochemical double layer capacitance of rGO, chemi‐adsorption of –OH ions on Lewis acid (boron of h‐BN moiety) and redox capacitance of Fe3O4/NiO in alkaline medium. In addition, the presence of pyrrolic defect at the rGO/h‐BN stacking region acted as the nucleation site and provided additional redox capacitance by shifting the Fermi level towards the valance band. An asymmetric supercapacitor (ASC) was constructed using Fe3O4/NiO@rGO/h‐BN and thermally reduced GO as positive and negative electrode, respectively. ASC showed high energy (82 W h Kg−1) and power density (5600 W Kg−1) along with low relaxation time constant (2.2 ms) and high stability (79%) after 10,000 charge discharge cycles.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe₃O₄/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

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“…The energy difference or the band gap (∆E) between the HOMO and LUMO energy levels of atenolol is a crucial factor, as, the low absolute value of ∆E gives good inhibition capacities 19 . Furthermore, the adsorption of atenolol is related to the EHOMO and ELUMO [20][21][22] , since the higher EHOMO means that the atenolol has a higher tendency to donate electrons towards the zinc metal. Additionally, lower ELUMO means a higher donation of the electron.…”

Section: Inhibitive Effect Of Atenolol Atheel H Alwash Et Almentioning

confidence: 99%

Inhibitive Effect of Atenolol on the Corrosion of Zinc in Hydrochloric Acid

2017

RJC

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Herein, we report the using of atenolol drug as a green corrosion inhibitor for zinc metal. Corrosion inhibitory effect of atenolol on zinc in 1M HCl was explored using the gravimetric method. The findings revealed that atenolol inhibited zinc corrosion in HCl solution and corrosion rate decreased with increasing the atenolol concentration. The optimum surface coverage was determined as 0.93 at 500 ppm atenolol concentration. Chemical computations were exploited to determine the electronic characteristics of atenolol such as highest occupied molecular orbital energy and lowest unoccupied molecular orbital energy (HOMO and LUMO, respectively). These important parameters obtained and elucidated which also confirmed the experimental findings. The findings (experimental and computational) demonstrated that the corrosion inhibition capacity increased with increasing the EHOMO value and decreasing the ELUMO value.

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Nanostructured Carbon‐Based Electrodes for Supercapacitor Applications

Saha

Kuila

2019

Nanomaterials for Electrochemical Energy Storage Devices

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Modified electrochemical charge storage properties of h-BN/rGO superlattice through the transition from n to p type semiconductor by fluorine doping

Cited by 33 publications

References 38 publications

Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe₃O₄/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe₃O₄/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

Inhibitive Effect of Atenolol on the Corrosion of Zinc in Hydrochloric Acid

Nanostructured Carbon‐Based Electrodes for Supercapacitor Applications

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Modified electrochemical charge storage properties of h-BN/rGO superlattice through the transition from n to p type semiconductor by fluorine doping

Cited by 33 publications

References 38 publications

Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe3O4/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe3O4/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

Inhibitive Effect of Atenolol on the Corrosion of Zinc in Hydrochloric Acid

Nanostructured Carbon‐Based Electrodes for Supercapacitor Applications

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Product

Resources

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Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe₃O₄/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor

Optimization of Chemi‐adsorption, EDLC, and Redox Capacitance Through Electro‐precipitation Synthesis of Fe₃O₄/NiO@rGO/h‐BN for the Development of Hybrid Supercapacitor