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Related Concept Videos

Types of Reversible Electrodes01:24

Types of Reversible Electrodes

For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...

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Polyoxometalate-Stabilized Silver Nanoparticles and Hybrid Electrode Assembly Using Activated Carbon.

Sara Goberna-Ferrón1, Laia Cots2, Marta Perxés Perich3

  • 1Instituto Universitario de Tecnología Química (CSIC-UPV), Universitat Politècnica de València, Avda. De los Naranjos s/n, 46022 Valencia, Spain.

Nanomaterials (Basel, Switzerland)
|August 12, 2023
PubMed
Summary

Researchers developed a novel triple hybrid material combining polyoxometalates (POMs), silver nanoparticles (Ag NPs), and activated carbon (AC). This AC/POM-Ag NPs hybrid electrode shows promise for supercapacitor applications.

Keywords:
Ag nanoparticlesactivated carbonelectroactive materialshybrid nanomaterialspolyoxometalatesupercapacitortriple hybrid materials

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Area of Science:

  • Hybrid Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Hybrid materials are expanding into electrochemistry, with emerging complex designs beyond binary combinations.
  • Novel electroactive hybrid materials are crucial for advanced energy storage applications.

Purpose of the Study:

  • To explore a novel triple hybrid material integrating polyoxometalates (POMs), silver nanoparticles (Ag NPs), and activated carbon (AC).
  • To demonstrate the utility of this AC/POM-Ag NPs nanohybrid as an electrode in a symmetric supercapacitor.

Main Methods:

  • Fabrication of the AC/POM-Ag NPs ternary nanocomposite.
  • Preparation of POM-protected Ag NPs using a green electrochemical method.
  • Characterization using UV-vis, IR, electron microscopy, DLS, XRD, XPS, and CV.

Main Results:

  • The AC/POM-Ag NPs nanohybrid material was successfully constructed and characterized.
  • Electrodes modified with AC/POM-Ag NPs exhibited electroactivity.
  • The hybrid electrode showed a specific capacitance of 81 F/g, slightly higher than bare AC electrodes (75 F/g).

Conclusions:

  • The tri-component nanohybrid material demonstrates potential for electrochemical applications.
  • This work highlights the versatility of integrating POMs, Ag NPs, and AC for energy storage devices.