Preparation and application of cobalt oxide nanostructures as electrode materials for electrochemical supercapacitors

Manteghi, Faranak; Kazemi, Sayed Habib; Peyvandipour, Masoud; Asghari, Ahmad

doi:10.1039/c5ra09060a

Cited by 78 publications

(28 citation statements)

References 32 publications

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“…Metal-organic frameworks (MOFs) are an emerging class of porous materials constructed from metal-containing nodes and organic linkers [46]. Wang [4,17], nanorods of bamboo stick type [4], truncated hexahedral shape [18], flocculent-like structures [48] and irregularly shaped aggregates (dense clusters) [21,22,26,49]. TEM results were relatively consistent with XRD results concerning the crystallite size (5-50 nm).…”

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)supporting

confidence: 71%

“…Wang et al found that all N 2 sorption isotherms of Co 3 O 4 and Co-Ce oxide nanoparticles can be assigned to a type IV isotherm, typical for mesoporous materials, showing a hysteresis loop at P/P 0 = 0.45 [22]. The mesoporous structure of the nanomaterials was also noted by other researchers [15,17,20,23]. Pudukudy et al synthesized Co 3 O 4 spinels possessing a bimodal mesopore distribution in the presence of modifiers [23].…”

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 66%

“…Most nanoparticles had faceted morphology and high crystalline quality as verified by Selected-Area Electron Diffraction (SAED) analysis and High-Resolution Transmission Electron Microscopy (HRTEM) [26]. Pseudo-hexagonal [15,17,18,21], circular and occasionally rectangular [2] or uniform spherical [12] shaped nanoparticles were observed. In general, powders are homogeneously dispersed with dimensions ranging from 50 to 600 nm, in accordance with SEM results, mentioned above.…”

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 97%

“…Pudukudy et al synthesized Co 3 O 4 spinels possessing a bimodal mesopore distribution in the presence of modifiers [23]. Manteghi et al also suggested the presence of a secondary porous structure formed by aggregation of primary nanostructures [17]. Another very useful technique for the characterization of cobalt oxide and its precursors is Fourier Transform Infrared spectroscopy (FTIR) spectroscopy.…”

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 99%

“…The first peak is located at 250-360°C and is assigned to reduction of Co temperature could be associated with weak acidic sites and the peak at high temperature with strong acidic sites [20]. In addition to physicochemical characterization of cobalt nanoparticles, some researchers have studied the optical, electrical and magnetic characteristics of the synthesized nanomaterials by means of UV-Vis-NIR Spectrometry [4], SQUID [4], cyclic voltammetry (CV) [17,18] and electrochemical impedance spectroscopy (EIS) [17].…”

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 99%

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Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Smyrnioti¹,

Ioannides²

2017

Cobalt

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Development of efficient and low-cost methods for the production of cobalt and cobalt oxide nanoparticles is of great interest. Such nanoparticles are typically prepared via transformation of precursors under controlled conditions. In the case of organic precursors, the production of said nanoparticles takes place through thermal decomposition of the organic moiety. The decomposition pathway of the precursor is greatly dependent on the type (i.e. inert, reducing or oxidizing) of the gaseous atmosphere prevailing during heating, as well as on the heating schedule itself. The characteristics of the organic group have also an important influence on the structure of the final material. The goal of the current work is to present a comprehensive review of the research work focusing on the synthesis of cobalt-based nanomaterials from activation of organic precursors.

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Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)supporting

confidence: 71%

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 66%

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 97%

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 99%

Section: Cobalt-based Nanomaterials From Metal-organic Framework (Mofs)mentioning

confidence: 99%

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Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Smyrnioti¹,

Ioannides²

2017

Cobalt

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Sensitive and Homogeneous Surface‐Enhanced Raman Scattering Detection Using Heterometallic Interfaces on Metal–Organic Framework‐Derived Structure

Lee

Shin

et al. 2022

Adv Materials Inter

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Here the use of heterometallic interfaces on metal–organic framework‐derived structures as surface‐enhanced Raman scattering (SERS)‐active substrates is investigated for sensitive and homogeneous SERS detection. Zeolitic imidazole framework‐67 (ZIF‐67) is grown on a conductive glass substrate via chemical bath deposition, followed by carbonization and oxidation to form ZIF‐67‐derived Co3O4 (ZIF‐67‐CO). For the sensitive and homogeneous SERS analysis, ZIF‐67‐CO is converted to the heterometallic interface Au–Ag@ZIF‐67‐derived Co3O4 (denoted as Au–Ag@ZIF‐67‐CO) via electrodeposition and successive chemical grafting. The optical properties of Au–Ag@ZIF‐67‐CO indicate a uniform and large‐scale distribution of both metals on the surface. Raman signals from the substrate are evenly enhanced based on the Raman intensity and shift mapping over a large area. Due to the multiple absorption bands of the Au–Ag@ZIF‐67‐CO substrate, signal enhancement can also be achieved with two different laser sources (532 and 785 nm) that are frequently used in SERS. As a result, concentration‐dependent and fingerprint SERS signals of small molecules such as 1,2‐bis‐(4‐pyridyl) ethylene, Nile blue A, and 1,1′‐diethyl‐2,2′‐cyanine iodide are obtained, and their signal enhancement factors are 104–105. Collectively, the use of heterometallic‐interfaced ZIF‐67‐CO will be a beneficial approach for collecting reproducible SERS signals of various target analytes.

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Fabrication of composite GO/NiFe₂O₄‐MnFe₂O₄‐CoFe₂O₄ anode material: Toward high performance hybrid supercapacitors

Moradi,

Ghobadi

2024

Microscopy Res & Technique

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Here, NiFe2O4, MnFe2O4, and CoFe2O4 nanoferrites are prepared by coprecipitation synthesis technique from nickel, manganese, and cobalt chloride precursors. Synthesized nanoferrites are annealed by calcination process at 800°C for 2 h. To produce a novel anode electrode material for asymmetric supercapacitors (ASCs), the composite material of GO/NiFe2O4‐MnFe2O4‐CoFe2O4 is fabricated. Physicochemical aspects of the synthesized nanoferrites are evaluated. X‐ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and x‐ray photoelectron spectroscopy tests are conducted, respectively. The electrochemical activities are studied by cyclic voltammetry, glavanostatic charge–discharge, and electrochemical impedance spectroscopy (EIS) in 2 M KOH as the electrolyte. In three electrode system, the novel GO/NiFe2O4‐MnFe2O4‐CoFe2O4 electrode displays a high specific capacity of 325 C g−1 and preserves about 99.9% of its initial specific capacity. The GO/NiFe2O4‐MnFe2O4‐CoFe2O4//GO ASCs device is assembled using GO/NiFe2O4‐MnFe2O4‐CoFe2O4, GO, and 2 M KOH solution as the positive electrode, negative electrode, and electrolyte, respectively. Significantly, the GO/NiFe2O4‐MnFe2O4‐CoFe2O4//GO ASCs represent an outstanding energy density of 50.5 W h kg−1 at power density of 2560 W kg−1. Through the long‐term charge discharge cycling tests, this ASC device illustrates about 93.7% capacity retention after 3000 cycles. Then, the present study provides the NiFe2O4‐MnFe2O4‐CoFe2O4 composite nanoferrites as a novel favorable candidate for anode material.Research Highlights Simple and green synthesis of magnetic NiCo2O4/NiO/rGO composite nanostructure using natural precursor. Fabricating and designing an efficient semiconductor for degradation ability. NiCo2O4/NiO/rGO nanocomposite with advanced photo elimination catalytic routine. The photocatalytic performance of NiCo2O4/NiO/rGO was surveyed for the degradation of various antibiotics below visible radiation. Efficiency was 92.9% to eliminate tetracycline. We developed a synergetic approach to prepare a novel active material composed of GO/ NiFe2O4‐MnFe2O4‐CoFe2O4 by a hybrid electrode material. Green synthesis method was accomplished to attain NiCo2O4/NiO/rGO nanocomposite with advanced photo elimination catalytic routine. The oxide nanobundles were prepared with a rapid and eco‐friendly method. In order to investigation of the effect of natural precursor, morphology and shape of nanoproducts was compared. NiCo2O4/NiO/rGO nanobundles possess a suitable bandgap in the visible area.

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Preparation and application of cobalt oxide nanostructures as electrode materials for electrochemical supercapacitors

Abstract: Application of surfactants in preparing nano cobalt oxide was effective in achieving a higher specific capacitance.

Cited by 78 publications

References 32 publications

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Sensitive and Homogeneous Surface‐Enhanced Raman Scattering Detection Using Heterometallic Interfaces on Metal–Organic Framework‐Derived Structure

Fabrication of composite GO/NiFe₂O₄‐MnFe₂O₄‐CoFe₂O₄ anode material: Toward high performance hybrid supercapacitors

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Preparation and application of cobalt oxide nanostructures as electrode materials for electrochemical supercapacitors

Abstract: Application of surfactants in preparing nano cobalt oxide was effective in achieving a higher specific capacitance.

Cited by 78 publications

References 32 publications

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Sensitive and Homogeneous Surface‐Enhanced Raman Scattering Detection Using Heterometallic Interfaces on Metal–Organic Framework‐Derived Structure

Fabrication of composite GO/NiFe2O4‐MnFe2O4‐CoFe2O4 anode material: Toward high performance hybrid supercapacitors

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Product

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Fabrication of composite GO/NiFe₂O₄‐MnFe₂O₄‐CoFe₂O₄ anode material: Toward high performance hybrid supercapacitors