Investigation of supercapacitor electrode performances of phosphorus-doped graphene oxide electrodes in various deep eutectic solvents and symmetric supercapacitor application

Kalkan, Elanur; Arvas, Melih Besir; Yazar, Sibel; Sahin, Yucel

doi:10.1016/j.est.2023.109184

Cited by 8 publications

(6 citation statements)

References 128 publications

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“…As shown in Figure 2d, the GO‐N 3 spectrum revealed the presence of a robust stretching ‐OH group at 3435 cm −1 and absorption peaks at 1720, 1585, 1408, and 1025 cm −1 , corresponding to C=O, C=C, C−O−H, and characteristic bands in C−O stretching vibrations, respectively. These findings align with previous studies on GO, where ‐OH, C=O, C=C, C−O, and C‐OH functional groups have been documented [48,49] . Furthermore, a distinct absorption peak at 2107 cm −1 indicated the presence of azide groups [21] .…”

Section: Resultssupporting

confidence: 92%

“…These findings align with previous studies on GO, where -OH, C=O, C=C, CÀ O, and C-OH functional groups have been documented. [48,49] Furthermore, a distinct absorption peak at 2107 cm À 1 indicated the presence of azide groups. [21] In contrast, the reduction in the absorption peaks linked to the functional groups provided evidence of the effective reduction of GO.…”

Section: Resultsmentioning

confidence: 99%

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Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

Ezgi Varol,

Uğuz Neli,

Budak

et al. 2024

ChemElectroChem

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Here, photoelectrodes of photoelectrochemical (PEC) cells consisting of azide functionalized reduced graphene oxide (GO‐N3) and quaternary metal chalcogenide (CdZnNiSSe) composites sensitized with metal phthalocyanines (MPc, M: Co, Zn, Ti) are developed and then tested in hydrogen evolution reaction (HER). CdZnNiSSe/RGO‐N3 composite is deposited on an indium tin oxide (ITO) electrode through a facile electrodeposition technique and ITO/CdZnNiSSe/RGO‐N3 photoelectrode is constructed. Then, MPcs bearing terminal alkyne groups are connected to RGO‐N3 via the copper(I)‐catalyzed azide‐alkyne cycloaddition (click chemistry) technique to produce ITO/CdZnNiSSe/RGO‐N3‐MPc structures. Decoration of ITO/CdZnNiSSe/RGO‐N3 with MPcs is proposed to improve the charge transfer capability of the photoelectrode due to wide light absorption of MPcs from UV toward the IR region of the light spectrum. PECHER responses indicate that among the photoanodes bearing ZnPc, CoPc, and TiOPc, ITO/CdZnNiSSe/RGO‐N3‐ZnPc electrode exhibits the highest PECHER performance owing to the suitability of band structure of ZnPc. Sensitizing ITO/CdZnNiSSe/RGO‐N3 with ZnPc increases the photocurrent density from 5.0 to 7.3 mA cm−2 at 0.8 V vs. RHE and the applied bias photon to current efficiency (ABPE) enhances from 3.18 % to 3.87 %. This study provides a new approach for increasing the performance of photoanodes via sensitization with MPcs in photoelectrochemical hydrogen evolution processes for future applications.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

Ezgi Varol,

Uğuz Neli,

Budak

et al. 2024

ChemElectroChem

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“…Production of chlorine-doped graphene oxide.-The Cl-GO production process was carried out in a single step and at room temperature by using a chronoamperometric method by using a Gamry potentiostat-galvanostat. 38,39,41 A graphite rod as the working electrode, a Pt (99.99% purity) wire as the counter electrode, and an Ag/AgCl (in 3 M KCl) as the reference electrode were used. Cl-GO production was carried in 5 M HClO₄ solution at a constant potential of 2.1 V against the reference electrode for 10 min.…”

Section: Methodsmentioning

confidence: 99%

“…36,37 Chlorine-doped graphene oxides can be produced in a single step with the chronoamperometric method at room temperature to use it as an active material of supercapacitors. [38][39][40][41][42] In the present study, CS obtained by hydrometallurgical recycling of lithium-ion batteries, and Cl-GO produced by the chronoamperometric method were novelly utilized to produce a composite supercapacitor electrode material. Initially, the obtained CS and Cl-GO were characterized and CCTAS cathodes were produced at varying CS/Cl-GO ratios Then, these cathodes were applied to CCTAS.…”

mentioning

confidence: 99%

Electrochemical Supercapacitor Application of Electrochemically Produced Chlorine-Doped Graphene Oxide with Cobalt Sulfide-Based Compounds Produced from Recycling of Spent Li-Ion Batteries

Yasa,

Birol,

Gencten

2024

ECS J. Solid State Sci. Technol.

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Recycling of LiCoO2 (LCO) based Li-ion batteries for energy storage systems is crucial both environmentally and economically. Reusing active species of LCO cathodes minimizes waste and conserves resources, promoting sustainability in energy storage. We have investigated repurposing cobalt from spent LiCoO2 (LCO) type Li-ion batteries into a cobalt sulfide-based compound (CS), which was then employed as an electrode material in asymmetric supercapacitors. Initially, the LCO cathode compound underwent leaching, resulting in the precipitation of CS utilizing the sulfur source derived from cobalt ions present in the solution. Furthermore, chlorine-doped graphene oxide (Cl-GO) was synthesized via the chronoamperometric method utilizing a 5 M perchloric acid solution. Produced CS and Cl-GO were characterized by using spectroscopic and microscopic techniques. The resulting CS and Cl-GO powders were combined to form the composite positive electrode of coin cell type asymmetric supercapacitors (CCTAS), with graphite powder (GP) utilized in the preparation of the negative electrode. CCTAS were also characterized by using electrochemical techniques such as cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge. The highest areal capacitance, recorded as 101 mF.cm-2 at a scan rate of 10 mV.s-1, was achieved in the CS/Cl-GO%15//GP CCTAS, with a capacitance retention of approximately 94% observed after 1000 cycles.

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“…Additionally, we included the Full Width at Half Maximum (FWHM) values for the peaks observed in the pattern. 63,64…”

Section: Sample Namementioning

confidence: 99%

One-Step Electrochemical Synthesis of Molybdenum-Disulfide-Based Materials for Enhanced Supercapacitor Performance

Hacinecipoglu,

Demir,

Gencten

et al. 2024

ECS J. Solid State Sci. Technol.

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Molybdenum disulfide (MoS2)-based two-dimensional materials were produced in one-step at room temperature using cyclic voltammetry technique. These materials were then used as electrode materials in supercapacitors. Concentration of supporting electrolyte, precursor, and cycle number parameters, which were the factors affecting the success of the synthesis, were optimized as 0.5 M, 0.15 M,and 10 cycles, respectively. The produced MoS2-coated electrodes were characterized using spectroscopic and microscopic methods. The chemical characterizations of the produced materials were examined by X-ray photoelectron spectroscopy, X-ray diffraction diffractometry, and scanning electron microscopy-energy-dispersive X-ray analysis. Surface morphologies of the composite materials were investigated using scanning electron microscopy. Finally, the produced MoS2-based materials were used as electrode materials in supercapacitors. The produced supercapacitors were characterized using cyclic voltammetry and electrochemical impedance spectroscopy methods, and the changes in the capacitive behavior of these systems over cycles were investigated using the cyclic charge-discharge technique. The highest areal capacitance value was determined as 251 mF.cm-2 at 0.2 mA.cm-2 charge-discharge current rates in 1.0 M H2SO4 by using of MoS-AD1 as the electrode material. Capacitance retention of this electrode was over 100% after 4000 cycles.

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Investigation of supercapacitor electrode performances of phosphorus-doped graphene oxide electrodes in various deep eutectic solvents and symmetric supercapacitor application

Cited by 8 publications

References 128 publications

Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

Electrochemical Supercapacitor Application of Electrochemically Produced Chlorine-Doped Graphene Oxide with Cobalt Sulfide-Based Compounds Produced from Recycling of Spent Li-Ion Batteries

One-Step Electrochemical Synthesis of Molybdenum-Disulfide-Based Materials for Enhanced Supercapacitor Performance

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