Enhanced electrochemical properties of zinc and manganese co-doped NiO nanostructures for its high-performance supercapacitor applications

Mala, Nazir Ahmad; Dar, Mohd Arif; Rather, Mehraj ud Din; Sivakumar, S.; Husain, Shahid; Batoo, Khalid Mujasam

doi:10.1016/j.inoche.2022.109661

Cited by 30 publications

(6 citation statements)

References 80 publications

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“…For the FTIR spectra of the three materials in Figure 2c, the 3640 cm −1 and 648 cm −1 peaks correspond to ν‐OH stretching and σ‐OH vibrations, respectively [16] . The peak at 486 cm −1 corresponds to the typical ν‐Ni−O vibrations, and the peaks in the range 1500–996 cm −1 correspond to the N−O stretching modes of intercalated NO 3 − , which confirms the formation of Ni 3 (NO 3 ) 2 (OH) 4 [17] . The characteristic peak of H 2 O was observed at 1640 cm −1 for NiY0, indicating the highest water content.…”

Section: Resultsmentioning

confidence: 74%

Carbon quantum dots modified and Y³⁺ doped Ni₃(NO₃)₂(OH)₄ nanospheres with excellent battery‐like supercapacitor performance

Gao,

Xie,

Zuo

et al. 2024

Chemistry A European J

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Supercapacitor is an important energy storage device widely used in the automobile industry, military production, and communication equipment because of its fast charge‐discharge rate, and high power density. Herein, carbon quantum dots modified and Y3+ doped Ni3(NO3)2(OH)4 (NiY@CQDs) nanospheres are prepared by a solvothermal method and used as an electrode material. The electrochemical properties of NiY@CQDs were measured in a three‐electrode system. An asymmetric supercapacitor (ASC) cell was assembled with activated carbon (AC) as the anode and NiY@CQDs as the cathode. The electrochemical properties of the ASC device were measured in a two‐electrode system. Experimental results show the shape of NiY@CQDs is petal‐shaped and the introducing carbon quantum dots and doping Y3+ significantly increases the specific surface area, conductivity, and specific capacitance of Ni3(NO3)2(OH)4. The mass‐specific capacitance of NiY@CQDs reaches up to 2944 F·g‐1 at a current density of 1 A·g‐1. The asymmetric supercapacitor of NiY@CQDs//AC has a high energy density of 138.65 Wh·kg−1 at a power density of 1500 W·kg−1, displaying a wide range of application prospects in the energy storage area.

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Section: Resultsmentioning

confidence: 74%

Carbon quantum dots modified and Y³⁺ doped Ni₃(NO₃)₂(OH)₄ nanospheres with excellent battery‐like supercapacitor performance

Gao,

Xie,

Zuo

et al. 2024

Chemistry A European J

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“…Using the Scherrer equation, crystallite sizes of the studied materials such as CuS, FeS 2 , CuFeS 2 , and CuFeS 2 /rGO were calculated as 58.13, 58.64, 43.59, and 30.76 nm. The smaller crystallite size was obtained for CuFeS 2 /rGO, which facilitates the charge transport and surface area of structure and improves the material efficiency …”

Section: Resultsmentioning

confidence: 99%

“…The smaller crystallite size was obtained for CuFeS 2 /rGO, which facilitates the charge transport and surface area of structure and improves the material efficiency. 34 3.2. Raman Spectra.…”

Section: Resultsmentioning

confidence: 99%

Ternary Copper Iron Sulfide Microflowers Anchored on Reduced Graphene Oxide for Water Splitting

Swathi

Yuvakkumar

Ravi

et al. 2023

ACS Appl. Nano Mater.

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Transition metal sulfides are widely employed as bifunctional electrocatalysts owing to their unique structural features, well-off active sites, and modifiable electronic and mechanical properties. Herein, we have synthesized highly efficient ternary copper iron sulfide (CuFeS 2 )/reduced graphene oxide (rGO) composites via a hydrothermal approach for an overall water splitting process. The tetragonal structure of CuFeS 2 microflowers anchored on rGO sheets is identified by using Xray analysis and compared with standard Joint Committee on Powder Diffraction Standards (JCPDS) #35-752. In Raman spectra, the existence of two bands D (defects) and G (graphitic) confirms the presence of the rGO composite with CuFeS 2, and the ratio of D and G band (I D /I G ) is observed to be 1.18. The morphological analysis using scanning electron microscopy and transmission electron microscopy substantiates the formation of microflowers with rGO sheets. The elemental composition of CuFeS 2 /rGO was analyzed by energy-dispersive X-ray analysis, which demonstrated a weight percentage of various compositions of Cu (18.07%), Fe (11.32%), S (13.88%), and C (56.74%). Moreover, the CuFeS 2 /rGO composites exhibited a high surface area, pore volume, and diameter of 50.352 m 2 /g, 0.162 cc/g, and 2.471 nm, respectively. The fabricated electrodes were examined by using electrochemical characterization. The obtained results clearly showed low overpotential and low Tafel slope values in both the oxygen evolution reaction (OER) (176 mV and 216 mV/dec) and hydrogen evolution reaction (HER) (153 mV and 150 mV/dec) processes. In addition, the fabricated composite exhibited low 1.59 V cell voltages for an overall water splitting process with more excellent stability, and it showed a faradaic efficiency of 97.8% for H 2 and 95.5% for O 2 . Therefore, the composite of rGO in ternary metal sulfide plays a predominant role in improving the electrocatalytic activity of the material, and the CuFeS 2 /rGO composite emerges as a promising electrode for the water splitting process.

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“…[16][17][18] Metal oxides offer advantages such as small size and robustness, high surface area, and unique chemical, physical, electrical, and thermal properties, making them the preferred choice for sensor applications. [19][20][21][22][23][24][25] Nano metal oxides were prepared by numerous techniques such as hydrothermal, mechanical alloying, microwave heating, chemical vapour deposition, sol-gel, co-precipitation, and solvothermal processes. Among these methods, the co-precipitation protocol offers a cost-effective and effortless approach.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, MWCNTs have exceptional mechanical, electrical, optical, and electrochemical properties, with high strength and superior flexibility attracted towards electrochemical sensors [16–18] . Metal oxides offer advantages such as small size and robustness, high surface area, and unique chemical, physical, electrical, and thermal properties, making them the preferred choice for sensor applications [19–25] …”

Section: Introductionmentioning

confidence: 99%

Rapid Electrochemical Investigation of Gemfibrozil Using NiONPs/Multiwalled Carbon Nanotube Modified Carbon Paste Electrode: Analysis of Human Urine Sample and Antimicrobial Activity

Kathrikenahalli Somashekarappa,

Basavaraju,

Nelligere Arakeshwaraiah

et al. 2023

ChemistrySelect

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In this study, nickel oxide nanoparticles (NiONPs) were produced by the co‐precipitation method and characterized by scanning electron microscopy, X‐ray diffraction (XRD), Fourier transform‐infrared and Ultraviolet‐visible spectroscopy. XRD analysis showed an average crystal size of 6 nm, while SEM analysis exemplified the oblong form with a particle size of 12 nm. As‐prepared NiONPs were combined with multiwalled carbon nanotubes (MWCNTs) and graphite powder to prepare NiONPs‐MWCNTs modified carbon paste electrode (MCPE). The fabricated NiONPs‐MWCNTsMCPE sensor was used to analyze Gemfibrozil (GEM) in pharmaceutical formulations. Electrochemical methods such as cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy employed in sensor characterization and electroanalysis of GEM. The sensor exhibited excellent electrochemical behavior towards GEM. It showed a lower limit of detection (LOD, 2.7×10−8 M), the limit of quantification (LOQ, 9.07×10−8 M), higher sensitivity, higher linear range, and long‐term stability compared to the reported methods. The NiONPs‐MWCNTsMCPE sensor was evaluated for practical application by performing spiking tests in pharmaceutical formulations and human urine samples, demonstrating significant recovery, high effectiveness, and accuracy. Further, nanoparticles manifested promising antibacterial action against Staphylococcus aureus, E. coli, Klebsiella aerogenes, Pseudomonas aeruginosa, and Klebsiella aerogenes.

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Enhanced electrochemical properties of zinc and manganese co-doped NiO nanostructures for its high-performance supercapacitor applications

Cited by 30 publications

References 80 publications

Carbon quantum dots modified and Y³⁺ doped Ni₃(NO₃)₂(OH)₄ nanospheres with excellent battery‐like supercapacitor performance

Carbon quantum dots modified and Y³⁺ doped Ni₃(NO₃)₂(OH)₄ nanospheres with excellent battery‐like supercapacitor performance

Ternary Copper Iron Sulfide Microflowers Anchored on Reduced Graphene Oxide for Water Splitting

Rapid Electrochemical Investigation of Gemfibrozil Using NiONPs/Multiwalled Carbon Nanotube Modified Carbon Paste Electrode: Analysis of Human Urine Sample and Antimicrobial Activity

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Enhanced electrochemical properties of zinc and manganese co-doped NiO nanostructures for its high-performance supercapacitor applications

Cited by 30 publications

References 80 publications

Carbon quantum dots modified and Y3+ doped Ni3(NO3)2(OH)4 nanospheres with excellent battery‐like supercapacitor performance

Carbon quantum dots modified and Y3+ doped Ni3(NO3)2(OH)4 nanospheres with excellent battery‐like supercapacitor performance

Ternary Copper Iron Sulfide Microflowers Anchored on Reduced Graphene Oxide for Water Splitting

Rapid Electrochemical Investigation of Gemfibrozil Using NiONPs/Multiwalled Carbon Nanotube Modified Carbon Paste Electrode: Analysis of Human Urine Sample and Antimicrobial Activity

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Carbon quantum dots modified and Y³⁺ doped Ni₃(NO₃)₂(OH)₄ nanospheres with excellent battery‐like supercapacitor performance

Carbon quantum dots modified and Y³⁺ doped Ni₃(NO₃)₂(OH)₄ nanospheres with excellent battery‐like supercapacitor performance