Carbon nano-fiber forest foundation for ruthenium oxide pseudo-electrochemical capacitors

Sridhar, Deepak; Yu, Hao; Meunier, Jean‐Luc; Omanovic, Sasha

doi:10.1039/d0ma00023j

Cited by 23 publications

(12 citation statements)

References 76 publications

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“…However, the capacitances of EGO and EGO-ABA-5 at 5 mV s −1 are lower than those at 10 and 20 mV s −1 , which is unusual, indicating that the electrodes’ surface area is less accessible at the lowest scan rate. Other studies have reported similar trends with carbon materials and it was proposed that the structure of the materials collapses when scanning at low scan rate or charging at low current density [ 63 , 64 ]. Furthermore, the specific capacitances of EGO-ABA-5 and EGO-ABA-10 are much larger than that of EGO-ABA-40 and of EGO.…”

Section: Resultsmentioning

confidence: 66%

One-Step Synthesis of Aminobenzoic Acid Functionalized Graphene Oxide by Electrochemical Exfoliation of Graphite for Oxygen Reduction to Hydrogen Peroxide and Supercapacitors

et al. 2022

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Graphene-based materials have attracted considerable attention as promising electrocatalysts for the oxygen reduction reaction (ORR) and as electrode materials for supercapacitors. In this work, electrochemical exfoliation of graphite in the presence of 4-aminebenzoic acid (4-ABA) is used as a one-step method to prepare graphene oxide materials (EGO) functionalized with aminobenzoic acid (EGO-ABA). The EGO and EGO-ABAs materials were characterized by FT-IR spectroscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, X-ray diffraction and scanning electron microscopy. It was found that the EGO-ABA materials have smaller flake size and higher density of oxygenated functional groups compared to bare EGO. The electrochemical studies showed that the EGO-ABA catalysts have higher activity for the ORR to H2O2 in alkaline medium compared to EGO due to their higher density of oxygenated functional groups. However, bare EGO has a higher selectivity for the 2-electron process (81%) compared to the EGO-ABA (between 64 and 72%) which was related to a lower content of carbonyl groups. The specific capacitance of the EGO-ABA materials was higher than that of EGO, with an increase by a factor of 3 for the materials prepared from exfoliation in 5 mM 4-ABA/0.1 M H2SO4. This electrode material also showed a remarkable cycling capability with a loss of only 19.4% after 5000 cycles at 50 mVs−1.

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Section: Resultsmentioning

confidence: 66%

One-Step Synthesis of Aminobenzoic Acid Functionalized Graphene Oxide by Electrochemical Exfoliation of Graphite for Oxygen Reduction to Hydrogen Peroxide and Supercapacitors

et al. 2022

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“…Several review papers on various PVSC, 12‐29 EES devices, 29‐48 and integrated systems 1‐12 have been published recently. As much as 90% of the worldwide PV market is currently dominated by the first‐generation Si‐based PVSCs, which have a high power conversion efficiency (PCE) as high as 27%, 12,21 as well as good stability and fixed industrial production standards.…”

Section: Introductionmentioning

confidence: 99%

Integration of supercapacitor with solar cell based on NiO ₂ and CdS nanopillars embedded in porous anodic alumina templates

Eminov

Тагиев

Aliyev

et al. 2022

Intl J of Energy Research

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Summary A photovoltaic solar cell (PVSC) is a type of power system that uses photovoltaic technology to convert the energy of solar light directly into electricity and is therefore capable of operating only when illuminated. Because the sun does not shine at all hours of the day in a given location, solar power is intermittent. Due to this intermittency, PVSCs are unable to provide electricity during the evening and night. For this reason, it is essential to hybridize the PVSCs with electrical energy storage (EES) devices such as capacitors, Li‐ion batteries, and supercapacitors (SC) in one single power unit. One of the most promising support systems for meeting the enormous and diverse power demand in contemporary civilization is sunlight‐powered energy conversion, which simultaneously achieves power conversion and energy storage. SCs can store huge amounts of energy and have a long service life. They also have a fast charge‐discharge time, excellent cyclic stability, and outstanding low‐temperature performance. They are one of the alternatives to traditional batteries for replacing them because of their qualities. Growing demand for green energy, miniaturization, and wearable mini‐electronic devices will result from the combination of PVSCs and SCs into a single hybrid device. This paper describes an integrated system with a NiO2 nanotubular supercapacitor serving as an energy storage device and a nanostructured PVSC operating as an energy conversion device based on CdTe/CdS heterojunctions. Here, a PVSC is disposed of on the light‐receiving front side of a single glass slide, both of which are covered with conductive indium‐tin‐oxide (ITO) thin film and an AAO template with pores filled with a photosensitive (CdS/CdTe) material. The SC part of the device is located on its rear side. The main operations for the fabrication of the proposed device are listed. It was shown that the design features of the device allow combining and simultaneous execution of some similar fabrication operations, which would have to be carried out in the case of separate manufacture of the constituent elements of the device. To date, experimental studies on the practical implementation of the PV part of the device have been carried out. The preparation technique and structural, optical, and morphological properties of glass/ITO/AAO/CdS structures were investigated through XRD, scanning electron microscopy, energy dispersive X‐ray spectroscopy, Raman, and UV‐Visible spectroscopy. The materials were demonstrated to be quite suitable as raw materials for the production of solar cells.

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“…Fossil fuels, which are limited natural resources, are being highly exploited due to the urgent need to meet the higher energy demands of society as well as the fast pace of technical advancements in the twenty-first century [ 1 , 2 , 3 , 4 ]. The rapid depletion of fossil fuels and the associated environmental pollution must be addressed with the research and development of green and renewable energy technologies for the continuous supply of secure and reliable energy [ 5 , 6 , 7 ]. Industrial and academic research is currently focusing on the alternative harnessing of energy in an efficient manner to fulfill these energy demands [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Molybdenum Sulfide/Tellurium Hetero-Composite by a Simple One-Pot Hydrothermal Technique for High-Performance Supercapacitor Electrode Material

et al. 2021

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It is necessary to investigate effective energy storage devices that can fulfill the requirements of short-term and long-term durable energy outputs. Here, we report a simple one-pot hydrothermal technique through which to fabricate the MoS2/Te nanocomposite to be used as an effective electrode material for high-performance supercapacitors. Comprehensive characterization of the as-fabricated nanomaterial was performed using FESEM, HRTEM, XRD, FTIR, XPS, etc., as well as electrochemical characterizations. The electrochemical characterization of the as-fabricated nanocomposite electrode material showed a high specific capacitance of 402.53 F g−1 from a galvanostatic charge-discharge (GCD) profile conducted at 1 A g−1 current density. The electrode material also showed significant rate performance with high cyclic stability reaching up to 92.30% under 4000 cycles of galvanostatic charge-discharge profile at a current density of 10 A g−1. The highly encouraging results obtained using this simple synthetic approach demonstrate that the hetero-structured nanocomposite of MoS2/Te electrode material could serve as a promising composite to use in effective supercapacitors or energy storage devices.

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Carbon nano-fiber forest foundation for ruthenium oxide pseudo-electrochemical capacitors

Abstract: Effect of ruthenium oxide coating temperature on directly grown carbon nanofibers for supercapacitor application is studied.

Cited by 23 publications

References 76 publications

One-Step Synthesis of Aminobenzoic Acid Functionalized Graphene Oxide by Electrochemical Exfoliation of Graphite for Oxygen Reduction to Hydrogen Peroxide and Supercapacitors

One-Step Synthesis of Aminobenzoic Acid Functionalized Graphene Oxide by Electrochemical Exfoliation of Graphite for Oxygen Reduction to Hydrogen Peroxide and Supercapacitors

Integration of supercapacitor with solar cell based on NiO ₂ and CdS nanopillars embedded in porous anodic alumina templates

Synthesis of Molybdenum Sulfide/Tellurium Hetero-Composite by a Simple One-Pot Hydrothermal Technique for High-Performance Supercapacitor Electrode Material

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Carbon nano-fiber forest foundation for ruthenium oxide pseudo-electrochemical capacitors

Abstract: Effect of ruthenium oxide coating temperature on directly grown carbon nanofibers for supercapacitor application is studied.

Cited by 23 publications

References 76 publications

One-Step Synthesis of Aminobenzoic Acid Functionalized Graphene Oxide by Electrochemical Exfoliation of Graphite for Oxygen Reduction to Hydrogen Peroxide and Supercapacitors

One-Step Synthesis of Aminobenzoic Acid Functionalized Graphene Oxide by Electrochemical Exfoliation of Graphite for Oxygen Reduction to Hydrogen Peroxide and Supercapacitors

Integration of supercapacitor with solar cell based on NiO 2 and CdS nanopillars embedded in porous anodic alumina templates

Synthesis of Molybdenum Sulfide/Tellurium Hetero-Composite by a Simple One-Pot Hydrothermal Technique for High-Performance Supercapacitor Electrode Material

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Integration of supercapacitor with solar cell based on NiO ₂ and CdS nanopillars embedded in porous anodic alumina templates