Design and synthesis of MOF-derived CuO/g-C<sub>3</sub>N<sub>4</sub> composites with octahedral structures as advanced anode materials for asymmetric supercapacitors with high energy and power densities

Zhu, Ziyang; Wei, Chuanying; Jiang, Di; Wu, Xin‐Tao; Lü, Min

doi:10.1039/d1ma00766a

Cited by 16 publications

(9 citation statements)

References 63 publications

(32 reference statements)

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“…The hierarchical porous structure allows more hydroxide ions to come into contact with the active substances and promotes electrochemical performance further. 50 …”

Section: Resultsmentioning

confidence: 99%

“…The pore volumes of FeCoNi–CH and FeCoNi–CH/p-rGO composite calculated from Barrett–Joyner–Halenda (BJH) are 0.16 and 0.11 cm 3 g –1 and the BJH pore diameters (Figure S6 inset) are within the range of 4 to 50 nm and 4 to 60 nm, respectively. The hierarchical porous structure allows more hydroxide ions to come into contact with the active substances and promotes electrochemical performance further …”

Section: Resultsmentioning

confidence: 99%

“…The hierarchical porous structure allows more hydroxide ions to come into contact with the active substances and promotes electrochemical performance further. 50 The TEM images of FeCoNi−CH/p-rGO are shown in Figure 5. It can be seen that the MOF template is etched, and FeCoNi−CH nanosheets are grown on the MOF substrates by self-assembly.…”

Section: Fabrication Of the Feconi−ch/p-rgo Compositementioning

confidence: 99%

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Skillful Introduction of Urea during the Synthesis of MOF-Derived FeCoNi–CH/p-rGO with a Spindle-Shaped Substrate for Hybrid Supercapacitors

Liang

Lü

et al. 2022

ACS Omega

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A composite (FeCoNi–CH/p-rGO) with a spindle-shaped substrate is controllably prepared by combining FeCoNi carbonate hydroxide (FeCoNi–CH) and partially reduced graphite oxide (p-rGO) using a novel chemical strategy. In the synthetic process, urea is introduced as the precipitant and reducing agent. MIL-88A as a self-template is converted into a ternary-metal CH composite, maintaining the original morphology by the metal ion etching and coprecipitation method, and graphite oxide is reduced to rGO with stronger conductivity partially at the same time. The electrochemical performance of the FeCoNi–CH/p-rGO is superior to FeCoNi–CH, with a high specific capacitance (1346 F g –1 at 0.5 A g –1 ) and rate capability (55.5% at 10 A g –1 ). The better electrochemical performance of the FeCoNi–CH/p-rGO composite is attributed to the pseudocapacitive energy storage capacity caused by the synergistic action of ternary-metal CH and the high conductivity of p-rGO. Meanwhile, the uniform mixture of FeOOH/activated carbon (AC) is fabricated as an anode to instead of the pure FeOOH or AC, which leads to the balancing energy density and high cycle stability of the hybrid supercapacitor (HSC). The corresponding assembled FeCoNi–CH/p-rGO//FeOOH/AC HSC exhibits a high energy density of 46.93 W h kg –1 at 400 W kg –1 power density and a cycle stability of 66.7% after 3000 cycles. In addition, this work also provides a facile method to fabricate metal–organic framework-derived ternary-metal CH/p-rGO composite materials, which could be applied in the fields of supercapacitors and other fields.

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“…The hierarchical porous structure allows more hydroxide ions to come into contact with the active substances and promotes electrochemical performance further. 50 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Fabrication Of the Feconi−ch/p-rgo Compositementioning

confidence: 99%

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Skillful Introduction of Urea during the Synthesis of MOF-Derived FeCoNi–CH/p-rGO with a Spindle-Shaped Substrate for Hybrid Supercapacitors

Liang

Lü

et al. 2022

ACS Omega

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“…Supercapacitor in general is composed of electrolytes, electrodes, and a separator that maintains the electrical distance between the two electrodes [4]. In addition, asymmetric supercapacitors are those with two electrodes divided by an electrolyte, where the cathode (negative electrode) is typically carbon and the anode (positive electrode) is made of a material with a higher capacitance [5]. Large specific surface area (SSA), high ionic conductivity, and excellent redox properties are needed to maximize the high-performance supercapacitor's electrochemical performance [6].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of NiO@Ni(OH)₂/Graphene Nanosheets//Carbon Electrode as Asymmetric Configuration in Coin Cell Supercapacitor

Diantoro,

Rahmadani,

Atturoifah

et al. 2024

J. Phys.: Conf. Ser.

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Electrochemical energy storage devices have emerged as a significant concern for contemporary society global and becoming a devices with great performance are in high demand. Supercapacitors are an alternative that is very suitable for use because of their high-power density, environmentally friendly, long-term cycle, safety, and abundance in nature. NiO and Ni(OH)2 nanoparticles have attracted global attention because of their varied application possibilities and advantages such as low toxicity, low cost, high theoretical capacitance, and environmentally friendly properties. NiO was composited with Ni(OH)2 in this study to enhance the supercapacitor device’s specific capacitance, energy density, and power density. The synthesis of NiO@ Ni(OH)2/Graphene electrodes used a blending method with mass variations of NiO (5, 10, 15, 20, 25) % as active material, and then was characterized using XRD to determine phase constituents and crystal size, SEM to determine morphology, FTIR to test functional groups, Cyclic Voltammetry and Galvanotic Charge-Discharge to test electrochemical properties. The asymmetric coin cell with 15% NiO mass in Ni(OH)2@NiO/ Graphene//Activated Carbon composite has the optimum power density and energy density of 327.4 W/kg and 17.1 Wh/kg.

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“…To resolve the above-mentioned issues, the first strategy is designing composites that combine FeS 2 and carbonaceous materials. [21][22][23][24][25][26] For example, Sun et al 27 anchored FeS 2 nanoparticles on graphene nanosheets (FeS 2 /GNS). The FeS 2 /GNS anode displayed high specific capacity (793 C g À1 ) and a superb rate capability (82% at 30 A g À1 ) in a wide potential range of À1.1 to 0 V (vs. Hg/HgO).…”

Section: Introductionmentioning

confidence: 99%

Passion fruit-like microspheres of FeS₂ wrapped with carbon as an excellent fast charging material for supercapacitors

et al. 2022

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Design and synthesis of MOF-derived CuO/g-C₃N₄ composites with octahedral structures as advanced anode materials for asymmetric supercapacitors with high energy and power densities

Abstract: Two-component composites consisting of transition metal copper oxide (CuO) and graphite carbon nitride (g-C3N4) were successfully synthesized. This CuO/g-C3N4 displays a high reversible specific capacity (1530.4 F g−1, 2 A g−1) as an anode material.

Cited by 16 publications

References 63 publications

Skillful Introduction of Urea during the Synthesis of MOF-Derived FeCoNi–CH/p-rGO with a Spindle-Shaped Substrate for Hybrid Supercapacitors

Skillful Introduction of Urea during the Synthesis of MOF-Derived FeCoNi–CH/p-rGO with a Spindle-Shaped Substrate for Hybrid Supercapacitors

Fabrication of NiO@Ni(OH)₂/Graphene Nanosheets//Carbon Electrode as Asymmetric Configuration in Coin Cell Supercapacitor

Passion fruit-like microspheres of FeS₂ wrapped with carbon as an excellent fast charging material for supercapacitors

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Design and synthesis of MOF-derived CuO/g-C3N4 composites with octahedral structures as advanced anode materials for asymmetric supercapacitors with high energy and power densities

Abstract: Two-component composites consisting of transition metal copper oxide (CuO) and graphite carbon nitride (g-C3N4) were successfully synthesized. This CuO/g-C3N4 displays a high reversible specific capacity (1530.4 F g−1, 2 A g−1) as an anode material.

Cited by 16 publications

References 63 publications

Skillful Introduction of Urea during the Synthesis of MOF-Derived FeCoNi–CH/p-rGO with a Spindle-Shaped Substrate for Hybrid Supercapacitors

Skillful Introduction of Urea during the Synthesis of MOF-Derived FeCoNi–CH/p-rGO with a Spindle-Shaped Substrate for Hybrid Supercapacitors

Fabrication of NiO@Ni(OH)2/Graphene Nanosheets//Carbon Electrode as Asymmetric Configuration in Coin Cell Supercapacitor

Passion fruit-like microspheres of FeS2 wrapped with carbon as an excellent fast charging material for supercapacitors

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Design and synthesis of MOF-derived CuO/g-C₃N₄ composites with octahedral structures as advanced anode materials for asymmetric supercapacitors with high energy and power densities

Fabrication of NiO@Ni(OH)₂/Graphene Nanosheets//Carbon Electrode as Asymmetric Configuration in Coin Cell Supercapacitor

Passion fruit-like microspheres of FeS₂ wrapped with carbon as an excellent fast charging material for supercapacitors