Hydrothermal synthesis of cobalt telluride nanorods for a high performance hybrid asymmetric supercapacitor

Muthu, Manikandan; Subramani, K.; Dhanuskodi, S.

doi:10.1039/c9ra08692g

Cited by 64 publications

(23 citation statements)

References 50 publications

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“…The Ragone plot clearly shows that the symmetric supercapattery device can deliver a high energy density without sacrificing much on power density. The high energy and power densities of the fabricated supercapattery device are significantly greater than the reported values (Figure ) for symmetric and asymmetric supercapacitors in aqueous electrolyte. − …”

Section: Results and Discussionmentioning

confidence: 65%

High-Performance High-Voltage Symmetric Supercapattery Based on a Graphitic Carbon Nitride/Bismuth Vanadate Nanocomposite

et al. 2020

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Herein, we report the hydrothermal synthesis of g-C3N4/BiVO4 nanocomposite materials for high-energy and high-operating-voltage supercapattery in aqueous electrolyte. The surface morphology and particle size of the prepared nanocomposite were examined by field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM) analyses. From the analyses, the formed rice-pellet-like BiVO4 is uniformly decorated over the g-C3N4 nanosheets. This enhances the wettability of material and leads to easy permeability of electrolyte ions in electrode, which help enhance the specific capacity value. The g-C3N4/BiVO4 (6 wt % of g-C3N4) nanocomposite material exhibited a high specific capacity of 2171 C/g at a current density of 2 A/g in the three-electrode configuration. The symmetric supercapattery device using the g-C3N4/BiVO4 (6 wt % g-C3N4) nanocomposite material delivered high energy and power densities of 61 Wh/kg and 16.2 kW/kg, respectively, in aqueous electrolyte with a maximum operating cell potential of 2 V. It exhibits a very high electrochemical stability of 130% at the current density of 20 A/g over 20 000 cycles with a coulombic efficiency of 98.8%. The superior properties of the device can attribute to the synergistic effect of both capacitive (nonfaradic) and battery-type (noncapacitive) processes in the charge storage mechanism of the nanocomposite material.

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Section: Results and Discussionmentioning

confidence: 65%

High-Performance High-Voltage Symmetric Supercapattery Based on a Graphitic Carbon Nitride/Bismuth Vanadate Nanocomposite

et al. 2020

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“…In addition, the final nanocomposite shows unique meso- and micro-porous structures with a high specific surface area, which could improve the easy electron transfer during electrochemical performance when used as an electrode material. This might be an extra benefit of the electrode material during electrochemical applications [ 42 ]. Table 1 lists the BET specific surface area, average pore size, and pore volumes of the samples.…”

Section: Resultsmentioning

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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“…Manikandan et al reported the fabrication of cobalt telluride nanorods (CoTe) and Te nanorods. CoTe exhibited C sp ∼ 170 C/g @ 0.5 A/g which was found that higher than Te nanorod 80 F/g ( Manikandan et al, 2020 ). Moreover, they reported nickel telluride to attain C sp > 610 F/g @ 1 A/g ( Manikandan et al, 2018 ).…”

Section: Introductionmentioning

confidence: 89%

Reduced graphene oxide doped tellurium nanotubes for high performance supercapacitor

et al. 2022

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Hydrothermal synthesis of cobalt telluride nanorods for a high performance hybrid asymmetric supercapacitor

Abstract: A one-step hydrothermal derived cobalt telluride nanorods and activated carbon-based hybrid asymmetric supercapacitor delivered a high energy (40.7 W h kg−1) and power density (22.5 kW kg−1) with an electrochemical stability of 85% for 10000 cycles.

Cited by 64 publications

References 50 publications

High-Performance High-Voltage Symmetric Supercapattery Based on a Graphitic Carbon Nitride/Bismuth Vanadate Nanocomposite

High-Performance High-Voltage Symmetric Supercapattery Based on a Graphitic Carbon Nitride/Bismuth Vanadate Nanocomposite

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

Reduced graphene oxide doped tellurium nanotubes for high performance supercapacitor

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