Pseudocapacitive properties of polypyrrole – ferrimagnetic CoFe2O4 composites

Tang, Dalue; Zhitomirsky, Igor

doi:10.1016/j.electacta.2023.143671

Cited by 2 publications

(1 citation statement)

References 46 publications

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“…CuO-PPy nanowire array supercapacitor electrodes showed a capacitance of 1080 mF cm –2 in a KOH electrolyte . However, PPy showed rapid degradation of properties in alkaline electrolytes . Other investigations of CuO-PPy composites focused on supercapacitors with a low active mass and reported high gravimetric and volumetric capacitance. − The addition of PPy to CuO resulted in enhanced conductivity and increased capacitance.…”

Section: Introductionmentioning

confidence: 99%

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

Awad,

Nawwar,

Zhitomirsky

2024

ACS Appl. Energy Mater.

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Section: Introductionmentioning

confidence: 99%

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

Awad,

Nawwar,

Zhitomirsky

2024

ACS Appl. Energy Mater.

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Core–Shell Inorganic/Organic Composites Composed of Polypyrrole Nanoglobules or Nanotubes Deposited on MnZn Ferrite Microparticles: Electrical and Magnetic Properties

Jurča,

Munteanu,

Vilčáková

et al. 2024

J. Compos. Sci.

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Core–shell inorganic/organic composites have often been applied as fillers in electromagnetic interference shielding. Those composed of conducting polymers and ferrites are of particular interests with respect to their electrical and magnetic properties. Pyrrole was oxidized in aqueous medium in the presence of manganese-zinc ferrite microparticles with ammonium peroxydisulfate or iron(III) chloride to yield polypyrrole-coated, core–shell microstructures. The effect of methyl orange dye on the conversion of globular polypyrrole to nanotubes has been demonstrated by electron microscopy when iron(III) chloride was used as an oxidant. The formation of polypyrrole was proved by FTIR spectroscopy. The completeness of ferrite coating was confirmed by Raman spectroscopy. The resistivity of composite powders was determined by four-point van der Pauw method as a function of pressure applied up to 10 MPa. The conductivity of composite powders was determined by a polypyrrole matrix and only moderately decreased with increasing content of ferrite. The highest conductivity of composites, 13–25 S cm−1, was achieved after the deposition of polypyrrole nanotubes. Magnetic properties of composites have not been affected by the polypyrrole moiety, and the magnetization of composites was proportional to the ferrite content.

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Pseudocapacitive properties of polypyrrole – ferrimagnetic CoFe2O4 composites

Cited by 2 publications

References 46 publications

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

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

Core–Shell Inorganic/Organic Composites Composed of Polypyrrole Nanoglobules or Nanotubes Deposited on MnZn Ferrite Microparticles: Electrical and Magnetic Properties

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