g-C3N4/CuO and g-C3N4/Co3O4 nanohybrid structures as efficient electrode materials in symmetric supercapacitors

Kavil, Jithesh; Anjana, P.M.; Joshy, Deepak; Babu, Ameya; Raj, G. Vadamalai; Periyat, Pradeepan; Rakhi, R.B.

doi:10.1039/c9ra08979a

Cited by 36 publications

(24 citation statements)

References 33 publications

(46 reference statements)

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“…SnO 2 is a new type of lithiophilic material with high specific capacity (1494 mAh g −1 ), low potential for Li + insertion, increased number of sources, and etc. [320,593,[596][597][598][599][600][601][602]; however, it suffers from significant volume expansion (∼300%) during the charge-discharge cycling, leading to fast capacity fading. SnO 2 nanosheets with 20-25 nm thickness dispersed in the g-C 3 N 4 showing the potential lithium storage for LIBs.…”

Section: Other Applicationsmentioning

confidence: 99%

“…Other g-C 3 N 4 -metal oxide nanocomposites can also be used in the supercapacitor that can be used with batteries to mitigate the power delivery problems associated with batteries [596][597][598]. The bare g-C 3 N 4 , g-C 3 N 4 /CuO, g-C 3 N 4 /Co 3 O 4 electrode-based device exhibited a specific capacitance of 72 F g −1 , 95 F g −1 , and 201 F g −1 , respectively [599]. Besides, the energy density of g-C 3 N 4 /CuO and g-C 3 N 4 /Co 3 O 4 at the constant power density of 1 kW•kg −1 are 13.2 W•h•kg −1 , and 27.9 W•h•kg −1 , respectively.…”

Section: Other Applicationsmentioning

confidence: 99%

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A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

2022

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g-C3N4 has drawn lots of attention due to its photocatalytic activity, low-cost and facile synthesis, and interesting layered structure. However, to improve some of the properties of g-C3N4, such as photochemical stability, electrical band structure, and to decrease charge recombination rate, and towards effective light-harvesting, g-C3N4–metal oxide-based heterojunctions have been introduced. In this review, we initially discussed the preparation, modification, and physical properties of the g-C3N4 and then, we discussed the combination of g-C3N4 with various metal oxides such as TiO2, ZnO, FeO, Fe2O3, Fe3O4, WO3, SnO, SnO2, etc. We summarized some of their characteristic properties of these heterojunctions, their optical features, photocatalytic performance, and electrical band edge positions. This review covers recent advances, including applications in water splitting, CO2 reduction, and photodegradation of organic pollutants, sensors, bacterial disinfection, and supercapacitors. We show that metal oxides can improve the efficiency of the bare g-C3N4 to make the composites suitable for a wide range of applications. Finally, this review provides some perspectives, limitations, and challenges in investigation of g-C3N4–metal-oxide-based heterojunctions.

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Section: Other Applicationsmentioning

confidence: 99%

Section: Other Applicationsmentioning

confidence: 99%

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

2022

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“…The discharge curve in GCD for the CxR20Mhybrid nanocomposite with 7% Cu content displayed a slow potential decay in Figure 4b. Table S4 compares the work conducted on copper oxides, ruthenium oxides and a carbon-based composite with our present work [19,[36][37][38][39][40]. The EIS technique was conducted to more precisely characterize the electrochemical behavior of C x R y M electrodes.…”

Section: Electrochemical Studiesmentioning

confidence: 99%

Hydrothermal Synthesis of CuO/RuO2/MWCNT Nanocomposites with Morphological Variants for High Efficient Supercapacitors

Chung,

Julistian,

Saravanan

et al. 2021

Catalysts

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In this study, we develop the optimum composition of copper oxide/ruthenium oxide and multi-walled carbon nanotubes (CuO/RuO2/MWCNTs) ternary nanocomposite via a hydrothermal method as an efficient electrode material for supercapacitor applications. The ratio between CuO and RuO2 varied to improve the electrochemical performance of the electrode. The synthesized nanocomposites are analyzed by high-resolution scanning electron microscopy (HR-SEM), thermo gravimetric analyzer (TGA) and electrochemical impedance spectroscopy (EIS). Furthermore, the elemental composition is analyzed by energy dispersive X-ray (EDX) spectroscopy and the specific capacitance was analyzed by cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) methods. The electrochemical investigations is conducted in a three-electrode system and the sample is attached on a stainless steel plate as the working electrode; platinum wire works as the counter electrode and Ag/AgCl electrode as the reference electrode, adopting 3 M (NH4)2SO4 as the electrolyte. The resultant of CuO/RuO2/MWCNT nanocomposite with 7 wt% Cu and 20 wt% Ru was found to perform the highest specific capacitance of 461.59 F/g in a current density of 1 A/g.

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“…In particular, graphene discovery highlighted the nanocarbon-based material’s irreplaceable impact on energy storage. ,− By this time, there have been many studies on the singly or doped effect of activated carbon (AC), graphene, graphene oxide, carbon nanotubes (CNTs), graphical carbon nitride (g-C 3 N 4 ), carbon dots (CDs), and carbon quantum dots. − Transition metal oxides, metal sulfides, polyoxometalates, phosphates, carbonates, chalcogenides, metal–organic frameworks (MOFs) conductive polymers, and their compounds have been investigated as adequate materials for energy storage applications, and they have a domain in other areas such as catalysts, sensors, drug delivery, gas storage/separation, and other types of energy storage/conversion systems such as batteries and fuel cells. − Chiefly, metal oxides including Co 3 O 4 , Fe 2 O 3 , V 2 O 5 , RuO 2 , ZnO, MnO 2 , NiO, SnO 2 , TiO 2 , CuO, Bi 2 O 3 , etc. with high specific capacitance values and high pseudocapacitive behaviors are commonly used. ,− Among the available metal oxides, Co 3 O 4 and RuO 2 come to the forefront with magnificent electrochemical reversibility and high theoretical specific capacitance, as well as remarkable cycling stability .…”

Section: Introductionmentioning

confidence: 99%

Rational Integration of ZIF-8 and BiPO₄ for Energy Storage and Environmental Applications

et al. 2022

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Environmental pollution and energy storage are among the most pivotal challenges of today’s world. The development of multifunctional materials is required to address these challenges. Our study presents the rational design and synthesis of a hybrid material (ZIF-8@BiPO4) with dual functionality: an outstanding supercapacitor electrode and an excellent photocatalyst. The ZIF-8@BiPO4 hybrid structure was obtained by conjoining zinc ions and 2-methylimidazole ligands toward BiPO4 by a one-pot stirring route at room temperature. The ZIF-8@BiPO4 resulted in considerably higher specific capacitance (Cs) (489 F g–1 at a scan rate of 5 mV s–1; 497 F g–1 at a current density of 1 A g–1) than that of pure BiPO4 (358; 443 F g–1) and ZIF-8 (185; 178 F g–1) under the same conditions in a three-electrode cell using the 2 M KOH aqueous electrolyte. Afterward, an asymmetric supercapacitor (ASC) device was fabricated with BiPO4 as the anode and ZIF-8@BiPO4 as the cathodes, acquiring an outstanding Cs of 255 F g–1 at a current density of 0.5 A g–1 with significant cycling stability (81% over 10,000 cycles). Moreover, the ASC has an energy density of 17.5 Wh kg–1and a power density of 13,695 W kg–1, which can be considered to be at the borderline between batteries and supercapacitors. The photocatalytic activity of ZIF-8@BiPO4 was further studied using a methylene blue (MB) dye and sildenafil citrate (SC) drug-active molecules. The degradation of MB was approximately 78% through the photocatalytic reduction after 180 min of UV irradiation. The outstanding characteristics together with the ecofriendly and low-cost preparation make ZIF-8@BiPO4 appealing for a broad range of applications.

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g-C₃N₄/CuO and g-C₃N₄/Co₃O₄ nanohybrid structures as efficient electrode materials in symmetric supercapacitors

Abstract: Comparison of electrochemical performance of symmetric supercapacitors based on g-C3N4/CuO and g-C3N4/Co3O4 electrodes.

Cited by 36 publications

References 33 publications

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

Hydrothermal Synthesis of CuO/RuO2/MWCNT Nanocomposites with Morphological Variants for High Efficient Supercapacitors

Rational Integration of ZIF-8 and BiPO₄ for Energy Storage and Environmental Applications

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g-C3N4/CuO and g-C3N4/Co3O4 nanohybrid structures as efficient electrode materials in symmetric supercapacitors

Abstract: Comparison of electrochemical performance of symmetric supercapacitors based on g-C3N4/CuO and g-C3N4/Co3O4 electrodes.

Cited by 36 publications

References 33 publications

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

Hydrothermal Synthesis of CuO/RuO2/MWCNT Nanocomposites with Morphological Variants for High Efficient Supercapacitors

Rational Integration of ZIF-8 and BiPO4 for Energy Storage and Environmental Applications

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Product

Resources

About

g-C₃N₄/CuO and g-C₃N₄/Co₃O₄ nanohybrid structures as efficient electrode materials in symmetric supercapacitors

Rational Integration of ZIF-8 and BiPO₄ for Energy Storage and Environmental Applications