Preparation of NiO decorated CNT/ZnO core-shell hybrid nanocomposites with the aid of ultrasonication for enhancing the performance of hybrid supercapacitors

Jayababu, Nagabandi; Jo, Seungju; Kim, Youngsu; Kim, Daewon

doi:10.1016/j.ultsonch.2020.105374

Cited by 40 publications

(8 citation statements)

References 46 publications

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“…Figure a depicts the Ragone plots of the P v -NiFeZnP||AC asymmetric supercapacitor device at different current densities. Noticeably, the P v -NiFeZnP||AC supercapacitor can deliver a high energy density of 122.1 μWh/cm 2 at 1 mA/cm 2 with a power density of 750 μW/cm 2 , which is higher than those recently reported. ,,− In addition, when the device was tested at 10 mA/cm 2 , its power density increased to 7500 μW/cm 2 with an energy density of 86.45 μWh/cm 2 . To test the practicality of the stored energy, the supercapacitor device was used to light an LED, as shown in the inset of Figure a and Figure S5.…”

Section: Resultsmentioning

confidence: 67%

NiFeZnP Nanosheets with Enriched Phosphorus Vacancies for Supercapattery Electrodes

Sharkawy

Saleh

Elbanna

et al. 2023

ACS Appl. Nano Mater.

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Designing and fabricating outstanding electrode materials via simple preparation routes are viable ways for improving the performance of electrochemical supercapacitors. We report on the synthesis of NiFeZn phosphide interconnected nanosheets with abundant phosphorus vacancies (P v -NiFeZnP) via a facile reduction route at room temperature. The fabricated P v -NiFeZnP was fully characterized using energy-dispersive spectroscopy, field emission scanning electron microscopy, electron paramagnetic resonance, and X-ray photoelectron spectroscopy techniques. Owing to the porous interconnected nanosheet structure and the superior stability enabled by the direct binder-free growth on Ni foam, the P v -NiFeZnP electrode, with optimized phosphorus vacancy formation, exhibits a superb electrochemical performance of 631.8 mC/cm 2 (equivalent to 1579.5 mF/cm 2 ), which is significantly higher than those reported in the literature. Also, the P v -NiFeZnP||activated carbon asymmetric device exhibits a very high Coulombic efficiency (∼100%) and excellent long-term stability (98.8% capacity retention after 7500 cycles). The fabricated device can deliver 122.1 μWh/cm 2 energy density at a power density of 750 μW/cm 2 . The fabricated NiFeZnP electrode is therefore a promising candidate for supercapacitor applications.

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Section: Resultsmentioning

confidence: 67%

NiFeZnP Nanosheets with Enriched Phosphorus Vacancies for Supercapattery Electrodes

Sharkawy

Saleh

Elbanna

et al. 2023

ACS Appl. Nano Mater.

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“…Tan delta peak of PLA blend relatively narrowed on loading CNS, when compared to pure PLA–loaded system at same CNTs loading revealing higher interfacial interactions. [ 27 ] When CNSs are added to PLA, they can alter the interactions between the polymer chains and affect the mobility and relaxation behavior of the polymer. CNSs can act as physical crosslinks, increasing the stiffness and reducing the mobility of the polymer chains, which can result in a decrease in the tan delta peak.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Material Extrusion‐Based Carbon Nanotubes/Zinc Oxide Core–Shell Polylactic Acid Nanocomposite Filaments for Advanced Biomedical Applications

Kumar

Divakaran

et al. 2023

Adv Eng Mater

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The rapid evolution of 3D‐printing (3DP) technologies has generated scope of developing advanced feedstock materials with excellent comprehensive properties. Material extrusion (ME) is one such 3DP technique with extensive range of commercial applications especially in aerospace applications. Herein, the current research focusses on developing ME‐based filaments with excellent functional characteristics by using polylactic acid (PLA) as the base polymer. The hybrid combination of carbon nanotubes and zinc oxide is synthesized by constructing a core–shell nanoparticles (CNS) which is then added into PLA under different wt%. The characterization techniques, such as X‐ray diffraction, Fourier‐transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, etc., confirm the formation of CNS, which affirms to be an ideal reinforcement within PLA matrix. The mechanical properties of PLA are significantly enhanced with the tensile strength augmentation by 48.5% with only 0.2 wt% addition of CNS, while the thermogravimetric analysis results confirm the thermal stability enhancement for PLA/CNS composites. The fabricated PLA/CNS filaments display excellent flow characteristics as vindicated in rheological studies and ME‐printed prototypes exhibit refined output with exemplary finishing. The developed composite filaments can be harnessed as an advanced material in biomedical applications with exceptional properties.

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“…Me–O/C–O–Me, Me–OH, where Me is either Ni or Zn). 46 The peak at approximately 531.5 eV corresponds to the O 2− ions in the oxygen-deficient regions within the oxide bonding matrix, 21 which are associated with oxygen vacancies. The intensity of this component is related to the concentration of oxygen vacancies, 47 which have the lowest formation energy among all the donor-like defects.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and characterization of a NiO–ZnO/PANI-CNTs composite for sensing of methanol in an aqueous environment

Nam,

Thom,

Kieu Anh

et al. 2023

RSC Adv.

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Preparation of NiO decorated CNT/ZnO core-shell hybrid nanocomposites with the aid of ultrasonication for enhancing the performance of hybrid supercapacitors

Cited by 40 publications

References 46 publications

NiFeZnP Nanosheets with Enriched Phosphorus Vacancies for Supercapattery Electrodes

NiFeZnP Nanosheets with Enriched Phosphorus Vacancies for Supercapattery Electrodes

Fabrication of Material Extrusion‐Based Carbon Nanotubes/Zinc Oxide Core–Shell Polylactic Acid Nanocomposite Filaments for Advanced Biomedical Applications

Fabrication and characterization of a NiO–ZnO/PANI-CNTs composite for sensing of methanol in an aqueous environment

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