High performance supercapattery incorporating ternary nanocomposite of multiwalled carbon nanotubes decorated with Co3O4 nanograins and silver nanoparticles as electrode material

Iqbal, Javed; Numan, Arshid; Rafique, Shazia; Jafer, R.; Mohamad, Sharifah; Ramesh, K.; Ramesh, S.

doi:10.1016/j.electacta.2018.05.040

Cited by 99 publications

(38 citation statements)

References 45 publications

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“…The values of C s gradually decrease with an increase in current densities from 1 to 11 A g −1 . This can be ascribed to the fact that with the high current rate, an asynchronous shuttling of charges takes place which leads to lowering the rate of diffusion/migration of electrolyte ions . The value of C s for SiC/BiCoZnO composite is decreased to 337.3 C g −1 with a retention value of 40.1% at 11 A g −1 , whereas the values of C s for SiC and BiCoZnO were decreased to 98.1 C g −1 (49%) and 22.8 C g −1 (6.6%), respectively.…”

Section: Resultsmentioning

confidence: 99%

“…It is noted that, from these figures, the nature of charge–discharge curves is retained by all the materials even at varying current densities affirming their excellent electrochemical reversibility. Due to the predominant faradaic or battery‐like charge storage mechanism of SiC/BiCoZnO composite, the amount of charge stored in electrode materials by computing the specific capacity ( C s ) in terms of C g −1 or mAh g −1 is given using the formula below

C_{normals} = \frac{I}{m} \times Δ t

where “ I ” denotes discharge current (A), “Δ t ” stands for discharge time (s), and “ m ” is the mass of active material ( g ). The estimated specific capacities of the pristine SiC, BiCoZnO, and SiC/BiCoZnO composite electrodes are 197.8, 343.2, and 841.1 C g −1 , respectively, at the current density of 1 A g −1 .…”

Section: Resultsmentioning

confidence: 99%

“…In this study, the observed potential is ≈1.8 V is higher when compared with limit of water splitting voltage 1.23 V in aqueous electrolyte . The symmetric supercapattery device was operated between the potential ranges from 0 to 1.8 V. The two salient computational determinants of supercapattery are the energy density ( E ) and power density ( P ) which have been calculated for the various current densities from 1 to 20 A g −1 by using the following formulae:

E (\frac{Wh}{kg}) = \frac{1}{2} \times C_{normals} \times Δ V \times \frac{1}{3.6}

P (\frac{normalW}{kg}) = \frac{E}{Δ t} \times 3600

where “ C s ” is the specific capacity in “C/g”, “Δ t ” is the discharge time in “ s ,” and “Δ V ” is the potential in “ V .” The Ragone plot (Figure D) represents the values of E and P obtained for the symmetric supercapattery device at various current densities. From the plot, it can be seen that the SiC/BiCoZnO composite‐based symmetric supercapattery exhibits excellent energy storage capacity of 76.25 Wh kg −1 with power output of 900 W kg −1 at the current density of 1 A g −1 .…”

Section: Resultsmentioning

confidence: 99%

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Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode

2019

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Herein, a novel nanostructure hybrid electrode based on silicon carbide supports a bismuth‐cobalt‐zinc ternary oxide composite (SiC/BiCoZnO) material that is designed for a high‐performance supercapattery device. The hybrid microstructure SiC/BiCoZnO is synthesized by a simple hydrothermal method subsequently followed by a calcination process. The mesoporous BiCoZnO nanoparticles (with specific surface area of 154.5 m2 g−1) are linked on the large surface of SiC structures in a SiC/BiCoZnO nanocomposite. The hybrid electrode possesses a high specific capacity of 841.1 C g−1 at a current density of 1 A g−1 in a mixed electrolyte of 1 m KOH + 1 m Na2SO4 due to synergistic effects of high conduction as well as large SiC structures and redox active metals present in the BiCoZnO nanoparticles. Moreover, the SiC/BiCoZnO nanocomposite displays excellent rate performance in a symmetric supercapattery device, which offers an excellent energy density of 76.25 Wh kg−1 at 1 A g−1 and maximum power output of 19 000 W kg−1 at 20 A g−1 with an outstanding capacity retention of 84.2% after 10 000 charge–discharge cycles. Thus, the hybrid architecture of the SiC/BiCoZnO nanocomposite with superior electrochemical properties can make it highly beneficial for the fabrication of energy and power devices.

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Section: Resultsmentioning

confidence: 99%

C_{normals} = \frac{I}{m} \times Δ t

Section: Resultsmentioning

confidence: 99%

E (\frac{Wh}{kg}) = \frac{1}{2} \times C_{normals} \times Δ V \times \frac{1}{3.6}

P (\frac{normalW}{kg}) = \frac{E}{Δ t} \times 3600

Section: Resultsmentioning

confidence: 99%

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Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode

2019

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“…In all the three cases, the CV curves reveal a characteristic redox peak. Since, the electrode is a battery type Faradic material, the terminology behind the charge storage has been reported elsewhere 9,20 . The CV traces indicate excellent electrochemical reversibility of the AgCoO 2 À Co 3 O 4 /C electrodes.…”

Section: Electrochemical Analysis On Agcoo 2 à Co 3 O 4 /C Architectumentioning

confidence: 99%

AgCoO₂−Co₃O₄/CMC Cloudy Architecture as High Performance Electrodes for Asymmetric Supercapacitors

2020

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This work represents the design of superior supercapacitor electrode that comprised of 3D cloud like silver cobalt oxide/ cobalt oxide (AgCoO 2 À Co 3 O 4 ) and carbon architecture. AgCoO 2 À Co 3 O 4 /C architecture can be fabricated from CoÀ Ag nitrate precursors with the addition of carboxymethyl cellulose followed by annealing. Mesoporous 3D cloudy architecture provides higher specific capacitance (575 F g À 1 at a scan rate of 2 mV s À 1 ) and rate performance (666 F g À 1 at a current density of 1 A g À 1 ). The combined effect of AgCoO 2 embedded Co 3 O 4 and carboxymethyl cellulose (carbon) highly favors for outstanding cycle life (around 1 % capacitance degradation even after 5000 cycles). Presence of such porous 3D architecture with carbon backbone delivers admirable energy/power density. Also, an advanced asymmetric supercapacitor with an operating range of 1.2 V is designed by utilizing this porous 3D cloudy architecture as positive electrode and activated carbon as negative electrode. The fabricated design shows a robust energy density of 17 W h kg À 1 with a high power density of 166 W kg À 1 at a current density of 1 A g À 1 . The findings of the current study underline the potential of AgCoO 2 À Co 3 O 4 /C electrodes for supercapacitor applications.[a] I.

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“…However, they require an enormous amount of power to work as an autonomous or complement distinctive vitality sources such as batteries and fuel cells . Supercapacitors are commonly divided into two types namely porous carbon‐based non‐Faradic electrical double‐layer capacitors and metal oxide/sulfides‐based reversible faradaic pseudocapacitors . In recent decades, various types of transition metal sulfides (TMSs) have been examined beyond the state‐of‐art of materials, which showed exceptional energy storage performance compared to the former generation materials, including metal oxides and carbon‐based materials.…”

Section: Introductionmentioning

confidence: 99%

A Self‐Branched Lamination of Hierarchical Patronite Nanoarchitectures on Carbon Fiber Cloth as Novel Electrode for Ionic Liquid Electrolyte‐Based High Energy Density Supercapacitors

Manikandan

Raj

Nagaraju

et al. 2019

Adv Funct Materials

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The developments of rationally designed binder-free metal chalcogenides decorated flexible electrodes are of paramount importance for advanced energy storage devices. Herein, binder-free patronite (VS 4 ) flower-like nanostructures are facilely fabricated on a carbon cloth (CC) using a facile hydrothermal method for high-performance supercapacitors. The growth density and morphology of VS 4 nanostructures on CC are also controlled by varying the concentrations of vanadium and sulfur sources along with the complexing agent in the growth solution. The optimal electrode with an appropriate growth concentration (VS 4 -CC@VS-3) demonstrates a considerable pseudocapacitance performance in the ionic liquid (IL) electrolyte (1-ethyl-3-methylimidazolium trifluoromethanesulfonate), with a high operating potential of 2 V. Utilizing VS 4 -CC@VS-3 as both positive and negative electrodes, the IL-based symmetric supercapacitor is assembled, which demonstrates a high areal capacitance of 536 mF cm −2 (206 F g −1 ) and excellent cycling durability (93%) with superior energy and power densities of 74.4 µWh cm −2 (28.6 Wh kg −1 ) and 10154 µW cm −2 (9340 W kg −1 ), respectively. As for the high energy storage performance, the device stably energizes various portable electronic applications for a long time, which make the fabricated composite material open up news for the fabrication of fabrics supported binder-free chalcogenides for high-performance energy storage devices.

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High performance supercapattery incorporating ternary nanocomposite of multiwalled carbon nanotubes decorated with Co3O4 nanograins and silver nanoparticles as electrode material

Cited by 99 publications

References 45 publications

Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode

Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode

AgCoO₂−Co₃O₄/CMC Cloudy Architecture as High Performance Electrodes for Asymmetric Supercapacitors

A Self‐Branched Lamination of Hierarchical Patronite Nanoarchitectures on Carbon Fiber Cloth as Novel Electrode for Ionic Liquid Electrolyte‐Based High Energy Density Supercapacitors

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High performance supercapattery incorporating ternary nanocomposite of multiwalled carbon nanotubes decorated with Co3O4 nanograins and silver nanoparticles as electrode material

Cited by 99 publications

References 45 publications

Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode

Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode

AgCoO2−Co3O4/CMC Cloudy Architecture as High Performance Electrodes for Asymmetric Supercapacitors

A Self‐Branched Lamination of Hierarchical Patronite Nanoarchitectures on Carbon Fiber Cloth as Novel Electrode for Ionic Liquid Electrolyte‐Based High Energy Density Supercapacitors

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About

AgCoO₂−Co₃O₄/CMC Cloudy Architecture as High Performance Electrodes for Asymmetric Supercapacitors