Facile synthesis of transition metal (M = Cu, Co) oxide grafted graphitic carbon nitride nanosheets for high performance asymmetric supercapacitors

Santos, Reginaldo da Silva; Babu, R. Suresh; Devendiran, M.; Haddad, Diego B.; Barros, Ana Lucia Ferreira de

doi:10.1016/j.matlet.2021.131156

Cited by 46 publications

(11 citation statements)

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“…Metal oxides with a pseudo-capacitive nature can be effectively integrated with g-C 3 N 4 structure in order to enhance the electrochemical performance of the subsequent electrode material. [50][51][52][53][54] Hence, in this work, we rst time report the inuence of Fe and V co-doping and g-C 3 N 4 fabrication on the structural, functional, morphological, and electrochemical performance of the WO 3 for supercapacitor study. WO 3 and FeV-WO 3 were synthesized by co-precipitation method and its composite with (g-C 3 N 4 ) was successfully fabricated by ultra-sonication technique.…”

Section: Introductionmentioning

confidence: 99%

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Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO₃@g-C₃N₄) as a cost-effective novel electrode material for advanced supercapacitor applications

Parveen,

Cochran,

Zulfiqar

et al. 2023

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO₃@g-C₃N₄) as a cost-effective novel electrode material for advanced supercapacitor applications

Parveen,

Cochran,

Zulfiqar

et al. 2023

RSC Adv.

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“…Santos et al reported a cost-effective, single-step synthesis of transition metal oxide (Co and Cu) grafted carbon nitride nanosheets. The asymmetric supercapacitor fabricated using Co and Cu oxides hybrid exhibited a specific capacitance of 124.5 F g −1 and 84.28 F g −1 with cycling stability of 96% retention after 2000 cycles [ 65 ]. Transition metal dichalcogenides (TMDs) finds application in supercapacitor due to their large surface area and rapid redox reactions at the surface but possess low capacitance retention.…”

Section: Salient Applications Of 2d Materialsmentioning

confidence: 99%

2D materials: increscent quantum flatland with immense potential for applications

et al. 2022

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Quantum flatland i.e., the family of two dimensional (2D) quantum materials has become increscent and has already encompassed elemental atomic sheets (Xenes), 2D transition metal dichalcogenides (TMDCs), 2D metal nitrides/carbides/carbonitrides (MXenes), 2D metal oxides, 2D metal phosphides, 2D metal halides, 2D mixed oxides, etc. and still new members are being explored. Owing to the occurrence of various structural phases of each 2D material and each exhibiting a unique electronic structure; bestows distinct physical and chemical properties. In the early years, world record electronic mobility and fractional quantum Hall effect of graphene attracted attention. Thanks to excellent electronic mobility, and extreme sensitivity of their electronic structures towards the adjacent environment, 2D materials have been employed as various ultrafast precision sensors such as gas/fire/light/strain sensors and in trace-level molecular detectors and disease diagnosis. 2D materials, their doped versions, and their hetero layers and hybrids have been successfully employed in electronic/photonic/optoelectronic/spintronic and straintronic chips. In recent times, quantum behavior such as the existence of a superconducting phase in moiré hetero layers, the feasibility of hyperbolic photonic metamaterials, mechanical metamaterials with negative Poisson ratio, and potential usage in second/third harmonic generation and electromagnetic shields, etc. have raised the expectations further. High surface area, excellent young’s moduli, and anchoring/coupling capability bolster hopes for their usage as nanofillers in polymers, glass, and soft metals. Even though lab-scale demonstrations have been showcased, large-scale applications such as solar cells, LEDs, flat panel displays, hybrid energy storage, catalysis (including water splitting and CO2 reduction), etc. will catch up. While new members of the flatland family will be invented, new methods of large-scale synthesis of defect-free crystals will be explored and novel applications will emerge, it is expected. Achieving a high level of in-plane doping in 2D materials without adding defects is a challenge to work on. Development of understanding of inter-layer coupling and its effects on electron injection/excited state electron transfer at the 2D-2D interfaces will lead to future generation heterolayer devices and sensors.

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“…This is assigned to the chemical structure of G-C3N4 of tris-triazine (C 6 N 7 ) in the ternary amino group [9]. Santos et al fabricated CoO and CuO decorated on G-C3N4; a specific capacitance (CS) of 124.75 and 84.28 at 0.5 A g were found, respectively [10]. Kuila et al synthesized Gd decorated on G-C3N4 for supercapacitor applications; a capacitance equal to 2.59 mF cm −2 at 10 mV s −1 was obtained [11].…”

Section: Introductionmentioning

confidence: 99%

Flower-Shaped CoS-Co2O3/G-C3N4 Nanocomposite for Two-Symmetric-Electrodes Supercapacitor of High Capacitance Efficiency Examined in Basic and Acidic Mediums

et al. 2022

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Graphitic carbon nitride (G-C3N4) was synthesized through the direct combustion of urea in the air. The CoS-Co2O3/G-C3N4 composite was synthesized via the hydrothermal method of G-C3N4 using cobalt salts. The morphological and chemical structures were determined through XRD, XPS, SEM, and TEM. XRD and XPS analyses confirmed the chemical structure, function groups, and elements percentage of the prepared nanocomposite. SEM measurements illustrated the formation of G-C3N4 sheets, as well as the flower shape of the CoS-Co2O3/G-C3N4 composite, evidenced through the formation of nano appendages over G-C3N4 sheets. TEM confirmed the 2D nanosheets of G-C3N4 with an average width and length of 80 nm and 170 nm, respectively. Two symmetric electrodes for the supercapacitor from the CoS-Co2O3/G-C3N4 composite. Electrochemical measurements were carried out to determine the charge/discharge, cyclic voltammetry, stability, and impedance of the prepared supercapacitor. The measurements were carried out under acid (0.5 M HCL) and basic (6.0 M NaOH) mediums. The charge and discharge lifetime values in the acid and base medium were 85 and 456 s, respectively. The cyclic voltammetry behavior was rectangular in a base medium for the pseudocapacitance feature. The supercapacitor had 100% stability retention up to 600 cycles; then, the stability decreased to 98.5% after 1000 cycles. The supercapacitor displayed a specific capacitance (CS) of 361 and 92 F/g, and an energy density equal to 28.7 and 30.2 W h kg−1 in the basic and acidic mediums, respectively. Our findings demonstrate the capabilities of supercapacitors to become an alternative solution to batteries, owing to their easy and low-cost manufacturing technique.

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Facile synthesis of transition metal (M = Cu, Co) oxide grafted graphitic carbon nitride nanosheets for high performance asymmetric supercapacitors

Cited by 46 publications

References 7 publications

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO₃@g-C₃N₄) as a cost-effective novel electrode material for advanced supercapacitor applications

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO₃@g-C₃N₄) as a cost-effective novel electrode material for advanced supercapacitor applications

2D materials: increscent quantum flatland with immense potential for applications

Flower-Shaped CoS-Co2O3/G-C3N4 Nanocomposite for Two-Symmetric-Electrodes Supercapacitor of High Capacitance Efficiency Examined in Basic and Acidic Mediums

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Facile synthesis of transition metal (M = Cu, Co) oxide grafted graphitic carbon nitride nanosheets for high performance asymmetric supercapacitors

Cited by 46 publications

References 7 publications

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO3@g-C3N4) as a cost-effective novel electrode material for advanced supercapacitor applications

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO3@g-C3N4) as a cost-effective novel electrode material for advanced supercapacitor applications

2D materials: increscent quantum flatland with immense potential for applications

Flower-Shaped CoS-Co2O3/G-C3N4 Nanocomposite for Two-Symmetric-Electrodes Supercapacitor of High Capacitance Efficiency Examined in Basic and Acidic Mediums

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Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO₃@g-C₃N₄) as a cost-effective novel electrode material for advanced supercapacitor applications

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO₃@g-C₃N₄) as a cost-effective novel electrode material for advanced supercapacitor applications