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Carbon coated cobalt oxide (CC-CO3O4) as electrode material for supercapacitor applications

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TLDR
In this paper, a carbon-coated cobalt oxide (CC-CO3O4) was used as a soluble carbon precursor in the preparation of CC-CO 3O4, which exhibited the maximum specific capacitance of 395 F g−1 at a scan rate of 5 mV s−1.
Abstract
Carbon coated cobalt oxide (CC-CO3O4) was prepared by colloidal processing using cobalt oxide and sucrose. Sucrose was used as a soluble carbon precursor in the preparation of CC-CO3O4. CC-CO3O4 was characterized by Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), Raman spectroscopy, Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) respectively. Electrochemical properties of CC-CO3O4 were measured in 1 M KOH electrolyte. CC-CO3O4 exhibited the maximum specific capacitance of 395 F g−1 at a scan rate of 5 mV s−1. The enhanced electrochemical performance of CC-CO3O4 may be due to the increased conductivity of the composite electrode by carbon coating over the cobalt oxide nanoparticles.

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Journal ArticleDOI

Effect of Particle Size and Morphological Structure on the Physical Properties of NiFe2O4 for Supercapacitor Application

TL;DR: In this article , the capacitive data of an asymmetric capacitor designed from the activated carbon (AAC) composite electrode and a solid electrolyte composed of PVA and KOH were studied.
Journal ArticleDOI

Sonication-supported synthesis of cobalt oxide assembled on an N-MWCNT composite for electrochemical supercapacitors via three-electrode configuration

TL;DR: In this article , the Co3O4@N-MWCNT composite was synthesized by a sonication-supported thermal reduction process for supercapacitor applications, and the structural and morphological properties of the materials were characterized via Raman, XRD, XPS, SEM-EDX, and FE-TEM analysis.
Book ChapterDOI

Application of Ferrites as Electrodes for Supercapacitor

Ankur Soam
TL;DR: In this article, different synthesis methods of spinel ferrites based nanocomposites and their electrochemical properties for supercapacitor application are summarized. But the authors do not discuss the application of spinels in super-capacitors.
Journal ArticleDOI

Metal-organic framework-derived NiS@Cobalt-Molybdenum layered double hydroxides shell@core as cathode and CoFe2O4-nanoparticles@MXene shell@core as anode materials for ultra-high energy-density flexible asymmetric supercapacitor

TL;DR: In this article , a flexible asymmetric supercapacitor (FSS-ASC) with metal-organic framework and MXene-supported electrode materials was proposed for sustainable flexible energy storage devices.
References
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Journal ArticleDOI

Li-O2 and Li-S batteries with high energy storage.

TL;DR: The energy that can be stored in Li-air and Li-S cells is compared with Li-ion; the operation of the cells is discussed, as are the significant hurdles that will have to be overcome if such batteries are to succeed.
Journal ArticleDOI

Nanomaterials for rechargeable lithium batteries

TL;DR: Some of the recent scientific advances in nanomaterials, and especially in nanostructured materials, for rechargeable lithium-ion batteries are reviewed.
Journal ArticleDOI

Supercapacitor devices based on graphene materials

TL;DR: In this paper, a supercapacitor with a maximum specific capacitance of 205 F/g with a measured power density of 10 kW/kg at energy density of 28.5 Wh/kg in an aqueous electrolyte solution has been obtained.
Journal ArticleDOI

To Be or Not To Be Pseudocapacitive

TL;DR: In this article, the authors demonstrate why it is inappropriate to describe nickel oxide or hydroxide and cobalt oxide/hydroxide as pseudocapacitive electrode materials, and demonstrate the difference between these two classes of materials.
Journal ArticleDOI

Plasma-Engraved Co3 O4 Nanosheets with Oxygen Vacancies and High Surface Area for the Oxygen Evolution Reaction.

TL;DR: An efficient Co3 O4 -based OER electrocatalyst is designed by a plasma-engraving strategy, which not only produced higher surface area, but also generated oxygen vacancies on Co 3 O4 surface with more Co(2+) formed to improve the electronic conductivity and create more active defects for OER.
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