In-situ synthesis of Co3O4/graphite nanocomposite for high-performance supercapacitor electrode applications

Gopalakrishnan, M.; Srikesh, G.; Mohan, A.; Arivazhagan,

doi:10.1016/j.apsusc.2017.01.092

Cited by 69 publications

(4 citation statements)

References 33 publications

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“…26 In another work, Gopalakrishnan et al synthesized a nano-Co 3 O 4 /graphite composite with a particle size of 10.5 nm which delivered a capacitance of 395 F g −1 at 0.5 A g −1 in a three electrode cell configuration using 6 M KOH as electrolyte. 27 The electrode mass loading used was very low, about 1 mg cm −2 . Electrochemical deposition of Co 3 O 4 nanoflakes on electro-etched carbon fiber by cathodic potential step was as well fabricated to achieve a capacitance of 598.9 F g −1 at 6.25 A g −1 in 1 M KOH and a retention of 94% at 31.25 A g −1 .…”

Section: T H Imentioning

confidence: 99%

“…The medium temperature material C/Co 3 O 4 -700 and the high temperature materials C/ Co 3 O 4 -750 and C/Co 3 O 4 -800 seem to have more developed cyclic voltammograms with an EDL formation. 26,27 These different signatures can be assigned to the inner materials characteristics. With the temperature augmentation, the specific surface area and the pore volume are enhanced favoring thus the development of EDLC.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

“…It is worth to mention that the performance were calculated for a mass loading of 3.5 mg cm –2 drop casted on nickel foam having a surface of 1 cm 2 . In another work, Gopalakrishnan et al synthesized a nano-Co 3 O 4 /graphite composite with a particle size of 10.5 nm which delivered a capacitance of 395 F g –1 at 0.5 A g –1 in a three electrode cell configuration using 6 M KOH as electrolyte . The electrode mass loading used was very low, about 1 mg cm –2 .…”

Section: Introductionmentioning

confidence: 99%

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Co₃O₄ Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

Zallouz

Réty

Vidal

et al. 2021

ACS Appl. Nano Mater.

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Metal oxides are of great interest for supercapacitor application, however, they suffer from capacity fading during cycling and limited cycle life. In this work, a one-pot bottom-up approach is proposed to design cobalt oxide (Co3O4) nanoparticles confined in a mesoporous carbon. This involved the coassembly of a phenolic resin, a surfactant, and a cobalt salt followed by a high temperature pyrolysis (600−800 °C) and a subsequent low temperature oxidation (190−240 °C) step. Very small Co3O4 particle size (2.3−7.4 nm) could be achieved for high loadings of Co3O4 (up to 59%) in the carbon network. Both the pyrolysis and oxidation temperature increase led to an increase of nanoparticle size, porosity and electronic conductivity. At low temperatures, i.e., 600 and 650 °C, and despite the low particle size, the performances are poor and limited by the carbon low electronic conductivity. At high temperature (800 °C), the conductivity is improved translating in a higher capacitance, but the larger and more aggregated nanoparticles induced low rate capability. The best compromise to maintain high capacitance and rate capability was observed at 700 and 750 °C and thus for composite materials combining simultaneously dispersed nanoparticles, high porosity, and good electronic conductivity. In particular, the material treated at 750 °C presents, in a 2 electrode system using 2 M KOH, a capacitance of 54 F g −1 at 0.1 A g −1 , a very high rate capability of 48.7% at 10 A g −1 , and a superior rate performance of 82% after 10000 cycles.

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Section: T H Imentioning

confidence: 99%

Section: Electrochemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Co₃O₄ Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

Zallouz

Réty

Vidal

et al. 2021

ACS Appl. Nano Mater.

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“…Solution combustion method includes the distribution of ions from exothermic reactions in a sol gel medium. To synthesis Co3O4, various solvents like citric acid monohydrate, cobalt nitrate hexahydrate, and ammonium nitrate can be utilized in the form of fuel, oxidizer and combustion enhancer followed by calcination process [32][33][34][35] . When these techniques are electrochemically compared, Co3O4 nanostructure developed using hydrothermal technique submitted highest outputs.…”

Section: Resultsmentioning

confidence: 99%

A review on Co3O4 nanostructures as the electrodes of supercapacitors

Kelathaya,

Sagar

2023

Mech. Eng. Advan.

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Usage of supercapacitors in energy storage applications has now become a new trend due to its high auspicious features. Introduction of pseudocapacitance has increased its weightage to be used in greater number of practical utilization. Electrodes are the major constituents of a supercapacitor based on which the electrochemical performance of the supercapacitor is decided. Among varieties of electrode materials available, transition metal oxides are the most suitable ones to fulfill the required its criteria. Due to the occurrence of faradic redox reactions on the surface of electrodes, selection of efficient and favorable electrode material plays major role. Co3O4 (Cobalt (III) oxide) is one among the most desiring electrode materials due to its various peculiar features. This paper reviews briefly on several factors of Co3O4 as electrode material in supercapacitor applications. It includes comparative discussions towards different synthesize methodologies, influence of its dimensional morphology on the electrochemical outputs like specific capacitance, energy density and the power density.

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Synthesis of Homogeneous Hollow Co₃O₄ Microspheres for Enhanced Cycle Life and Electrochemical Energy Storage Performance

et al. 2020

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How to achieve a balance between excellent pseudocapacitive performance and simplicity of the synthetic pathway of Co3O4 is still a challenge. Herein, hollow Co3O4 microspheres were synthesized through a facile template‐free solvothermal approach with a following calcination treatment. The synthetic Co3O4 exhibited remarkable electrochemical properties in terms of high specific capacity 922.7 F g−1 at 1 A g−1, superior rate capability with 67.7 % capacitance retention (1–20 A g−1), as well as excellent cycling stability (105.6 % retention after 10000 cycles). A hybrid supercapacitor device is also successfully assembled consisting of a Co3O4 cathode and a reduced graphene oxide anode with a wide potential window of 0–1.65 V, which delivers a high energy density and an outstanding cycle lifetime. These superior electrochemical properties will render the hollow Co3O4 microsphere material as an attractive material for promising application in high‐performance electrochemical energy storage systems.

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In-situ synthesis of Co3O4/graphite nanocomposite for high-performance supercapacitor electrode applications

Cited by 69 publications

References 33 publications

Co₃O₄ Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

Co₃O₄ Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

A review on Co3O4 nanostructures as the electrodes of supercapacitors

Synthesis of Homogeneous Hollow Co₃O₄ Microspheres for Enhanced Cycle Life and Electrochemical Energy Storage Performance

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In-situ synthesis of Co3O4/graphite nanocomposite for high-performance supercapacitor electrode applications

Cited by 69 publications

References 33 publications

Co3O4 Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

Co3O4 Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

A review on Co3O4 nanostructures as the electrodes of supercapacitors

Synthesis of Homogeneous Hollow Co3O4 Microspheres for Enhanced Cycle Life and Electrochemical Energy Storage Performance

Contact Info

Product

Resources

About

Co₃O₄ Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

Co₃O₄ Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

Synthesis of Homogeneous Hollow Co₃O₄ Microspheres for Enhanced Cycle Life and Electrochemical Energy Storage Performance