Synergy of Charge Storage Properties of CuO and Polypyrrole in Composite CuO-Polypyrrole Electrodes for Asymmetric Supercapacitor Devices

Awad, Mahmoud; Nawwar, Mohamed; Zhitomirsky, Igor

doi:10.1021/acsaem.4c01204

ACS Appl. Energy Mater.

2024

DOI: 10.1021/acsaem.4c01204

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Synergy of Charge Storage Properties of CuO and Polypyrrole in Composite CuO-Polypyrrole Electrodes for Asymmetric Supercapacitor Devices

Mahmoud Awad,

Mohamed Nawwar,

Igor Zhitomirsky

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2024

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Cited by 3 publications

References 66 publications

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In‐Situ Growth of 2D to 3D NiO on Nickel Foam with Enhanced Capacity Retention as Battery‐Type Electrode for Asymmetric Supercapacitor

Wihdatul Himmah,

Wulan Septiani,

Wustoni

et al. 2024

ChemNanoMat

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This work presents a systematic study to synthesize NiO on nickel foam (NF) using a straightforward and cost‐efficient hydrothermal method, followed by calcination. Through comprehensive physicochemical analyses, it was demonstrated that the properties of the resultant NF@NiO could be modulated by adjusting the concentration of the nickel nitrate hexahydrate precursor. Notably, a morphological transition from a 2D sheet‐like structure to a 3D rambutan‐like formation was observed as the precursor concentration increased. The best‐performing NF@NiO 4 mM showed a maximum areal capacity of 723 mC cm‐2 (equivalent to 547.73 F g‐1) at a current density of 0.5 mA cm‐2. This electrode also maintained remarkable cycle stability, retaining 78.9% of its capacitance after 10,000 cycles at a current density of 50 mA cm‐2 in 2 M KOH. Furthermore, ASC (NiO 4 mM//AC) achieved a specific capacitance of 64.79 F g‐1 at a current density of 1 A g‐1 with an energy density of 17.63 Wh kg‐1 at a power density of 700 W kg‐1.

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In‐Situ Growth of 2D to 3D NiO on Nickel Foam with Enhanced Capacity Retention as Battery‐Type Electrode for Asymmetric Supercapacitor

Wihdatul Himmah,

Wulan Septiani,

Wustoni

et al. 2024

ChemNanoMat

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Hierarchical CuO nanosheets encasing nanorods via a singular potential-cycling activation: Innovations in supercapacitor energy density and longevity

Dai,

Lin,

Wang

et al. 2024

Journal of Alloys and Compounds

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Magnetic CuFe2O4 Spinel–Polypyrrole Pseudocapacitive Composites for Energy Storage

Awad,

Zhitomirsky

2024

Materials

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This investigation focused on the fabrication of ceramic ferrimagnetic CuFe2O4–conductive polypyrrole (PPy) composites for energy storage. CuFe2O4 with a crystal size of 20–30 nm and saturation magnetization of 31.4 emu g−1 was prepared by hydrothermal synthesis, and PPy was prepared by chemical polymerization. High-active-mass composite electrodes were fabricated for energy storage in supercapacitors for operation in a sodium sulfate electrolyte. The addition of PPy to CuFe2O4 resulted in a decrease in charge transfer resistance and an increase in capacitance in the range from 1.20 F cm−2 (31 F g−1) to 4.52 F cm−2 (117.4 F g−1) at a 1 mV s−1 sweep rate and from 1.17 F cm−2 (29.9 F g−1) to 4.60 F cm−2 (120.1 F g−1) at a 3 mA cm−2 current density. The composites showed higher capacitance than other magnetic ceramic composites of the same mass containing PPy in the same potential range and exhibited improved cyclic stability. The magnetic behavior of the composites was influenced by the magnetic properties of ferrimagnetic CuFe2O4 and paramagnetic PPy. The composites showed a valuable combination of capacitive and magnetic properties and enriched materials science of magnetic supercapacitors for novel applications based on magnetoelectric and magnetocapacitive properties.

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Synergy of Charge Storage Properties of CuO and Polypyrrole in Composite CuO-Polypyrrole Electrodes for Asymmetric Supercapacitor Devices

Cited by 3 publications

References 66 publications

In‐Situ Growth of 2D to 3D NiO on Nickel Foam with Enhanced Capacity Retention as Battery‐Type Electrode for Asymmetric Supercapacitor

In‐Situ Growth of 2D to 3D NiO on Nickel Foam with Enhanced Capacity Retention as Battery‐Type Electrode for Asymmetric Supercapacitor

Hierarchical CuO nanosheets encasing nanorods via a singular potential-cycling activation: Innovations in supercapacitor energy density and longevity

Magnetic CuFe2O4 Spinel–Polypyrrole Pseudocapacitive Composites for Energy Storage

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