Photovoltaic and capacitance performance of low-resistance ZnO nanorods incorporated into carbon nanotube-graphene oxide nanocomposites

Mohamed, Mohamed Mokhtar; Ghanem, Mohamed A.; Reda, S.M.; Khairy, Mohamed; Naguib, Eman M.; Alotaibi, Nouf H.

doi:10.1016/j.electacta.2019.03.226

Cited by 25 publications

(10 citation statements)

References 43 publications

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“…A SnO 2 –TiO 2 /GNP hybrid anode Figure 5 (a.1,a.2) [ 62 ] produced a PCE improvement from 2.91% for the material without graphene to 3.37% in the composite, exhibiting good stability after 200 h of continuous irradiation. Mohamed et al [ 63 ] processed a composite of ZnO nr /GO-CNT, in which the GO-CNT hybrid reduced the size of ZnO crystallites, increasing the surface area by two orders of magnitude. It also had an effect on the redox performance of triiodide/iodide (I 3 − /I − ) electrolyte by the formation of p–n heterojunction at ZnO (n-type)/CNT-GO (p-type) interface, efficient for electron-hole separation.…”

Section: Ceramic/graphene Composites Used In Energy Production and Storagementioning

confidence: 99%

Applications of Ceramic/Graphene Composites and Hybrids

et al. 2021

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Research activity on ceramic/graphene composites and hybrids has increased dramatically in the last decade. In this review, we provide an overview of recent contributions involving ceramics, graphene, and graphene-related materials (GRM, i.e., graphene oxide, reduced graphene oxide, and graphene nanoplatelets) with a primary focus on applications. We have adopted a broad scope of the term ceramics, therefore including some applications of GRM with certain metal oxides and cement-based matrices in the review. Applications of ceramic/graphene hybrids and composites cover many different areas, in particular, energy production and storage (batteries, supercapacitors, solar and fuel cells), energy harvesting, sensors and biosensors, electromagnetic interference shielding, biomaterials, thermal management (heat dissipation and heat conduction functions), engineering components, catalysts, etc. A section on ceramic/GRM composites processed by additive manufacturing methods is included due to their industrial potential and waste reduction capability. All these applications of ceramic/graphene composites and hybrids are listed and mentioned in the present review, ending with the authors’ outlook of those that seem most promising, based on the research efforts carried out in this field.

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Section: Ceramic/graphene Composites Used In Energy Production and Storagementioning

confidence: 99%

Applications of Ceramic/Graphene Composites and Hybrids

et al. 2021

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“…The restacking of graphene and agglomeration of ZnO/graphene composite are common issues during the fabrication process, reducing the available active sites and indirectly restricting the diffusion of reactants between layers 115 . Additionally, fabricating graphene with a large basal plane will hinder the electron transfer and causes a slow reaction kinetics 116,117 .…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, fabricating graphene with a large basal plane will hinder the electron transfer and causes a slow reaction kinetics 116,117 . To obviate the limitations mentioned above, researchers had hybridized the ZnO/graphene photoanode with carbon nanotubes (CNTs) to act as a spacer for graphene nanosheet to prevent stacking and further improve its electronic properties 115,118 . Besides, a heterostructure 3D graphene network with ZnO nanorods array had been proposed to address the agglomeration of ZnO/graphene nanocomposite 119 .…”

Section: Introductionmentioning

confidence: 99%

Zinc oxide/graphene nanocomposite as efficient photoelectrode in dye‐sensitized solar cells: Recent advances and future outlook

Mahalingam

Low

Omar

et al. 2022

Intl J of Energy Research

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Summary Dye‐Sensitized Solar Cells (DSSCs), also known as Grätzel cells, are a third‐generation photovoltaic technology that has garnered extensive interest due to its simplicity of fabrication, economical, and relatively high power conversion efficiency (PCE). The PCE of the photovoltaic cells is primarily related to the architecture of the cells, as well as the electrodes and electrolyte employed. Using zinc oxide (ZnO) coupled with two‐dimensional graphene as photoelectrode enables efficient charge transfer and minimizes electron–hole recombination in the DSSCs, resulting in improved performance. This review outlines the feasibility and performance enhancement of ZnO/graphene nanocomposite and its derivatives as photoelectrode for DSSCs. The structural features, optical properties, electron transport, and dye interaction of the ZnO/graphene nanocomposite‐based photoelectrode were considered in this review. In addition, the limitations of ZnO/graphene derivatives as photoelectrodes and their solutions were extensively discussed, as well as their prospects. The ZnO/graphene‐based photovoltaic cells exhibit an efficiency of up to 11.5% under different dyes and electrolytes. The recent progress achieved with this photoelectrode, which is a viable substitute for titanium dioxide (TiO2), is also thoroughly reviewed.

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“…It is substantial to identify the quantity of such second phases essential to get a sensible decrease in resistance. Considering their large S/V ratio, quite low thresholds were previously stated for MO-rGO/CNT nanocomposites [5]. Regardless the sensing response of rGO and CNTs is large and more rapid, though they get intensely distressed by relative humidity at room Electronic supplementary material The online version of this article (https ://doi.org/10.1007/s4245 2-020-2220-7) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

CeO2 nano-hexagons decorated rGO/CNT heterostructure for high-performance LPG sensing

et al. 2020

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This paper reports, the improved sensitivity and selectivity of liquefied petroleum gas (LPG) sensing at room temperature based on ternary heterostructure nanocomposite (CeO 2-rGO/CNT). Detection of LPG is required for proper environment monitoring to avoid any health hazards in the household and industrial areas. Towards this, a low-cost, high performance, and high stable room temperature gas sensor was fabricated. CeO 2 nanopuzzles was synthesized by Eggshell membrane template assisted hydrothermal method and nanocomposites by sono-chemical route. As-synthesized materials and nanocomposites were analyzed by employing characterizations like XRD, Raman, FT-IR, FESEM, and TEM, which confirmed the formation of shape, size, structure, and functional groups involved. The current study focuses on the fabrication of room temperature LPG sensor based on hybrid nanocomposites coated on flexible polyethylene terephthalate substrate working electrodes for In-house chemiresistive LPG detection unit to study response, stability, and selectivity parameters. The ternary heterostructure nanocomposite gas sensor exhibited good selectivity to LPG at room temperature. This sensor showed the response of 42% at 400 ppm of LPG, which is 2.21 times than pure CeO 2 sensor with a short response time 26 s and recovery time of 98 s, and gained 99% response after bending with 95.2% stability and 85.7% periodic stability of the sensor.

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Photovoltaic and capacitance performance of low-resistance ZnO nanorods incorporated into carbon nanotube-graphene oxide nanocomposites

Cited by 25 publications

References 43 publications

Applications of Ceramic/Graphene Composites and Hybrids

Applications of Ceramic/Graphene Composites and Hybrids

Zinc oxide/graphene nanocomposite as efficient photoelectrode in dye‐sensitized solar cells: Recent advances and future outlook

CeO2 nano-hexagons decorated rGO/CNT heterostructure for high-performance LPG sensing

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