Free-Standing Working Electrodes for Supercapacitors Based on Composite Polymer Nanofibers and Functionalized with Graphene Oxide

Elmessiry, Khaled S.; El-Aassar, M. R.; Nassr, Abu Bakr Ahmed Amine; Kenawy, El‐Refaie; Moharam, Baha Eddin; Ali, Nehal

doi:10.1007/s11664-021-09120-2

Cited by 5 publications

(4 citation statements)

References 64 publications

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“…At the same time, the incorporation of ZnO@ZnS CS NPs content by 5%, 8%, and 10% increased the electrical response to 1.02 V, 2.33 V, and 4.42 V, respectively, as shown in Figure 8c. The conversion sensitivity of the PVDF fabricated device recorded almost 0.091 V/N•mm 3 , while that of the PVDF-10 wt % ZnO@ZnS composite mat recorded a sensitivity of 0.153 V/N•mm 3 which is better that the best energy harvester devices reported in the previous work [72]. A comparison of the presented piezoelectric device performance with previously reported data is presented in Table 3.…”

Section: The Piezoelectric Response Of the Nanogenerator Devicesupporting

confidence: 57%

“…Since the 1980s, it has been related to materials science and nanotechnology aspects and lately has drawn increasing attention [1]. The important feature of such a technique is its development for lots of applications owing to its easiness and truncated energy consumption [2][3][4][5]. Many modifications in the electrospinning experimental setup have been conducted, especially in the spinneret and the collector, to obtain a better morphology and characteristics of the spun fibers.…”

Section: Introductionmentioning

confidence: 99%

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Wearable Electrospun Piezoelectric Mats Based on a PVDF Nanofiber–ZnO@ZnS Core–Shell Nanoparticles Composite for Power Generation

Ali,

Kenawy,

Wadoud

et al. 2023

Nanomaterials

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This work adopted a strategy to use new functional high-performance piezoelectric materials for sustainable energy production in wearable self-powered electrical devices. An innovative modification in electrospinning was used to produce highly aligned nanofibers. In the nanogenerator, the flexible membrane constituents were tunefully combined. The novel composite nanofibers were made of Poly (vinylidene fluoride) PVDF, loaded with ZnO@ZnS core–shell nanoparticles to achieve a non-brittle performance of the hetero nanoparticles and piezoelectric polymer. A nanofiber mat was inserted between two thermoplastic sheets with conductive electrodes for application in wearable electronic devices. Complete spectroscopic analyses were performed to characterize the nanofiber’s material composition. It is shown that the addition of 10 wt % ZnO@ZnS core–shell nanoparticles significantly improved the piezoelectric properties of the nanofibers and simultaneously kept them flexible due to the exceedingly resilient nature of the composite. The superior performance of the piezoelectric parameter of the nanofibrous mats was due to the crystallinity (polar β phase) and surface topography of the mat. The conversion sensitivity of the PVDF device recorded almost 0.091 V/N·mm3, while that of the PVDF—10 wt % ZnO@ZnS composite mat recorded a sensitivity of 0.153 V/N·mm3, which is higher than many flexible nano-generators. These nanogenerators provide a simple, efficient, and cost-effective solution to microelectronic wearable devices.

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Section: The Piezoelectric Response Of the Nanogenerator Devicesupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Wearable Electrospun Piezoelectric Mats Based on a PVDF Nanofiber–ZnO@ZnS Core–Shell Nanoparticles Composite for Power Generation

Ali,

Kenawy,

Wadoud

et al. 2023

Nanomaterials

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“…The composite shows a specific capacitance of ∼3.42 F g −1 at 0.05 A g −1 , higher than the ∼1.68 F g −1 of PIND/PAN nanofibers. 19 In an effort to eliminate the current collector, Zhu et al first utilized electrophoretic deposition to coat MXENE on FTO-coated glass, followed by electrochemical polymerization of PPy. The PPy/MXENE film was carefully peeled off from the FTO-coated glass and showed ∼203 mF cm −2 at 30 mV s −1 when applied as a collector-less freestanding electrode.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Elmessiry et al directly electrospun polyindole (PIND)/PAN/GO nanofibers on the stainless steel collector, which is then utilized as an additive-less electrode. The composite shows a specific capacitance of ∼3.42 F g –1 at 0.05 A g –1 , higher than the ∼1.68 F g –1 of PIND/PAN nanofibers . In an effort to eliminate the current collector, Zhu et al first utilized electrophoretic deposition to coat MXENE on FTO-coated glass, followed by electrochemical polymerization of PPy.…”

Section: Introductionmentioning

confidence: 99%

Improving Flexibility and Capacitive Charge Storability in Free-Standing Carbon Nanofiber Electrodes

et al. 2022

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Energy storage devices with higher volumetric energies and power densities are crucial in delivering high electrochemical performances without being bulky. Herein, a flexible free-standing carbon nanofiber (CNF) electrode with and without graphene is derived from electrospun polyacrylonitrile nanofiber mesh. The embedded graphene enhanced the conductivity of the polymeric solution, generating significant "whipping" motion to create better fiber cross-linking that enhances the flexibilities of CNFs. Besides, the presence of graphene reduced the population of surface oxygenated functional groups when compared to the pristine CNF. Raman spectroscopy demonstrated lower defect states in graphene-embedded CNFs, favorable for better electrical conductivity. Both the reduced surface functional group and reduced impedance (1.0 Ω compared to 1.1 Ω of pristine CNF) show that a graphene-embedded CNF recorded improved rate capability compared to a pristine CNF. When fabricated into a symmetry supercapacitor, a volumetric energy density of ∼4 mWh cm −3 at a power density of ∼63 mW cm −3 was achieved, which is one of the highest reported values based on our knowledge.

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Synthesis and supercapacitor performance of Sm3RuO7 nanorods and Sm3RuO7/MnO2 nanocomposite

Vidyalakshmi,

Vaishali,

Geetha

2024

J Mater Sci: Mater Electron

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Free-Standing Working Electrodes for Supercapacitors Based on Composite Polymer Nanofibers and Functionalized with Graphene Oxide

Cited by 5 publications

References 64 publications

Wearable Electrospun Piezoelectric Mats Based on a PVDF Nanofiber–ZnO@ZnS Core–Shell Nanoparticles Composite for Power Generation

Wearable Electrospun Piezoelectric Mats Based on a PVDF Nanofiber–ZnO@ZnS Core–Shell Nanoparticles Composite for Power Generation

Improving Flexibility and Capacitive Charge Storability in Free-Standing Carbon Nanofiber Electrodes

Synthesis and supercapacitor performance of Sm3RuO7 nanorods and Sm3RuO7/MnO2 nanocomposite

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