Tailoring electrochemical properties of zirconium oxide doped by praseodymium coated with carbon based materials for superior supercapacitors

• Published in: Inorganic chemistry communications Vol. 169; p. 113114
• Main Authors: Moharam, M.M., Ullah Asif, Sana, Abdu Musad Saleh, Ebraheem, Althomali, Raed H., Kassem, Asmaa F., Sadiq, Maria
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-11-2024
• Subjects: Electrode kinetics; Energy and industry; Metal oxide; Pseudocapacitive; Sol-gel; Stability; Symmetric electrodes; Metal oxide; Stability; Sol-gel; Symmetric electrodes; Energy and industry; Electrode kinetics; Pseudocapacitive
• ISSN: 1387-7003
• DOI: 10.1016/j.inoche.2024.113114

Electrochemical properties of zirconium oxide doped by praseodymium coated with carbon based materials for Superior Supercapacitors.
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•Nanocomposites of NrGO, PANI, and MWCNt with Pr doped ZrO2 (PrZr) were fabricated.•PrZrNt composite attained a significantly higher specific capacitance of (933.53 mF /cm2).•PrZrNt nanocomposite with activated carbon as a cathode has achieved a specific capacitance of 616.65 mF /cm2 at 1 mA/cm2 current density.
This research aims to modify metal oxide surfaces using conducting polymers, multi-walled carbon nanotubes (MWCNTs), and NrGO to improve the conductivity and durability of composites for use in electrochemical energy storage. An uncomplicated sol–gel and in situ technique have been developed to create nanocomposites of NrGO, PANI, and MWCNt with Pr doped ZrO2 (PrZr) named PrZrG, PrZrP, and PrZrNt, respectively. The scaffolding performance from the galvanostatic charge–discharge analysis conducted in a 2 M KOH solution revealed that the PrZrNt composite attained a significantly higher specific capacitance (933.53 mF /cm2) in comparison to the bare PrZr electrode (522.6 mF/cm2) at 3 mA/cm2 with an energy density (ED) of 2.5 Wh/kg at a power density (PD) of 3.6 kW/kg. This result indicates that the PANI incorporation has significantly improved the electrode’s pseudocapacitance. In addition, symmetric devices made of PrZrNt nanocomposite with activated carbon as a cathode have been discovered to achieve a specific capacitance of 616.65 mF /cm2 at 1 mA/cm2 current density.