Facile synthesis of a binary composite from watermelon rind using response surface methodology for supercapacitor electrode material

Omar, Nurizan; Abdullah, Ezzat Chan; Numan, Arshid; Mubarak, Nabisab Mujawar; Khalid, Mohammad; Aid, Siti Rahmah; Agudosi, Elochukwu Stephen

doi:10.1016/j.est.2022.104147

Cited by 20 publications

(5 citation statements)

References 99 publications

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“…The charge storage kinetics measurements of the prepared Zn 3 (PO 4 ) 2 electrode were carried out in a potentiostatic mode of an electrochemical analyzer. EIS examines the reaction process/mechanism of ion migration and dispersion to and away from electrode surface, and thus creates a unique frequency character termed “Warburg impedance.” 25 The EIS experiment was performed at a frequency range of 10 mHz to 100 kHz at an amplitude of 10 mV. EIS involves supplying an alternating potential to the material within a wide range of frequencies and evaluating the amplitude and phase shift of the current produced.…”

Section: Resultsmentioning

confidence: 99%

Facile microwave‐assisted hydrothermal synthesis of zinc phosphate nanocrystals as electrode material for high‐rate performance aqueous and non‐aqueous zinc‐ion batteries

Agudosi,

Khalid,

Sanhueza

2024

Energy Storage

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Exploring suitable and economically efficient cathode materials for zinc‐ion batteries plays a vital role in combating current challenges and achieving practical applications. Herein, Zn3(PO4)2 nanoparticles with exceptional battery properties were produced via microwave‐assisted hydrothermal synthesis. The synthesis was conducted at different microwave heating times (3, 5, 10, and 15 min) at a fixed temperature of 200°C. The structural properties of synthesized Zn3(PO4)2 were studied via XRD, FESEM‐EDS, and TEM studies, while the electrochemical parameters were evaluated through CV, GCD, and EIS in a standard 3‐electrode system with 1 M KOH as an electrolyte at a room temperature. The electrochemical results show that Zn3(PO4)2 synthesized at 10 min microwave heating time reported the best electrochemical performance with a specific capacity value of 38.90 and 31.89 C/g at a scan rate of 10 mV/s and current density of 1 A/g, respectively. Furthermore, a stability test of the synthesized electrode material reported an excellent cyclability of the electrode with 79% retention of the initial value of its specific capacity after 1000 cycles.

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Section: Resultsmentioning

confidence: 99%

Facile microwave‐assisted hydrothermal synthesis of zinc phosphate nanocrystals as electrode material for high‐rate performance aqueous and non‐aqueous zinc‐ion batteries

Agudosi,

Khalid,

Sanhueza

2024

Energy Storage

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“…99 As the scan rate increased, the electrolyte ions had insufficient time to diffuse into the electrode, causing the electrode to have a lower Q A,CV . 100 Ni3-Cu-P electrode demonstrated the highest Q A,CV at all scan rates compared to its counterparts, showing the highest Q A,CV value of 0.45 C cm −2 (specific capacity (Q S,CV ) of 667.6 C g −1 ) at the scan rate of 3 mV s −1 . The Q S,CV of Ni3-Cu-P electrode was about 85% of its theoretical value (783.1 C/g) calculated using Eq.…”

Section: Morphological Analysis-figuresmentioning

confidence: 92%

Optimization and Fabrication of Binder-Free Nickel-Copper Phosphate Battery-type Electrode Using Microwave-Assisted Hydrothermal Method

Gerad

Numan²,

Khalid³

et al. 2023

J. Electrochem. Soc.

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A binder-free nickel-copper phosphate battery-type electrode was fabricated using a microwave-assisted hydrothermal technique. The fabrication process was optimized with Design of Experiment (DoE) software and then validated experimentally. The electrode made at 90°C for 12.5 minutes, with a Ni:Cu precursor ratio of 3:1, had the highest specific capacity. The experimental specific capacity of the optimized nickel-copper phosphate (Ni3-Cu-P) binder-free electrode was 96.2% of the theoretical value predicted by the software, which was within 10% error. Moreover, the growth of amorphous Ni3-Cu-P electrode material with irregular microspheres of small size was observed on the surface of nickel foam. These amorphous microspherical shapes of the Ni3-Cu-P electrode material provide more electroactive sites and a larger active surface area for faradaic reaction. In electrochemical energy storage applications, the Ni3-Cu-P electrode outperformed the bare Ni-P and Cu-P electrodes, with the highest areal capacity (0.77 C/cm2), the lowest charge transfer resistance (81.7 Ω), and the highest capacity retention (83.9%) at 2.0 mA/cm2. The study indicates that the Ni3-Cu-P electrode's exceptional electrochemical properties result from the interaction between nickel and copper in the binary metal phosphate framework, making it an excellent choice for battery-type electrodes used in electrochemical energy storage applications.

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“…11j shows the b-value of untreated and plasma treated watermelon peel activated carbon, it has the surfacecontrolled behavior in according with the power law the relation was found. 7,36,37 Ip aVb In the cyclic voltammetry for the air and oxygen plasma treated watermelon peel activated carbon electrode materials, which has to increase its specific capacitance as the result of the air plasma treatment. The highly porous material improves its electrode/ electrolyte interface which also can enhance the redox reaction along with the specific capacitance.…”

Section: Cyclic Voltammetry Analysismentioning

confidence: 99%

“…Based on the results, porous activated carbon derived from biomass would be the ideal material for applications involving highperformance capacitors and supercapacitors, as well as low-cost energy storage devices, due to its remarkable performance. 30,35,36 Potential Applications and Environmental Benefits Activated carbon derived from watermelon peel exhibits excellent adsorption properties and finds diverse applications in various fields. It can effectively remove organic pollutants, heavy metals, dyes, and other contaminants from water and wastewater treatment processes.…”

Section: Cyclic Voltammetry Analysismentioning

confidence: 99%

High Porous Activated Carbon Electrode Derived from Watermelon Peel Biomass Exposed with DC Glow Discharge Plasma Applied for Super Capacitors

K C,

K A

2024

ECS J. Solid State Sci. Technol.

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The growing demand for sustainable and environmentally-friendly technologies has spurred the exploration of innovative methods for waste management and resource utilization. Among the various bio-wastes generated globally, watermelon peel emerges as a significant contributor. To characterize carbon materials in the presence of functional groups, for morphological analysis, and intensity, we subjected activated fruit peel carbon to X-ray diffraction, Fourier-transform infrared spectroscopy, field-emission scanning electron microscopy, X-ray photoelectron spectroscopy, and Raman studies. Furthermore, we examined its electrochemical performance. Another method used to assess wettability is the contact angle. Watermelon-rind-activated carbon was exposed to a DC glow discharge oxygen and air plasma with a 450V applied potential. The air-treated carbon demonstrated a noteworthy capacitance of 1669F/g at 0.5mA/g in a 2M KOH electrolyte. Our study found that the properties of the activated carbon were enhanced through cold plasma treatment. This research provides valuable insights into the potential resources of fruit peels and proposes a novel adsorbent with cost-effective advantages in supercapacitors, which could provide effective energy storage for portable gadgets, electric cars, and renewable energy systems, thus presenting a solution for sustainable waste management.

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Facile synthesis of a binary composite from watermelon rind using response surface methodology for supercapacitor electrode material

Cited by 20 publications

References 99 publications

Facile microwave‐assisted hydrothermal synthesis of zinc phosphate nanocrystals as electrode material for high‐rate performance aqueous and non‐aqueous zinc‐ion batteries

Facile microwave‐assisted hydrothermal synthesis of zinc phosphate nanocrystals as electrode material for high‐rate performance aqueous and non‐aqueous zinc‐ion batteries

Optimization and Fabrication of Binder-Free Nickel-Copper Phosphate Battery-type Electrode Using Microwave-Assisted Hydrothermal Method

High Porous Activated Carbon Electrode Derived from Watermelon Peel Biomass Exposed with DC Glow Discharge Plasma Applied for Super Capacitors

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