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Related Concept Videos

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

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Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet
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Enhanced Wire-Shaped Micro-Supercapacitor Treated with a Continuous Surface Atmospheric Pressure Plasma Jet Approach.

Minju Kim1, Woo Jong Kim2, Min Kyeong Kim3

  • 1Research Institute for Natural Science, Department of Physics, Hanyang University, Seoul, 04763, South Korea.

Small (Weinheim an Der Bergstrasse, Germany)
|February 5, 2025
PubMed
Summary

This study introduces a novel atmospheric pressure plasma jet (APPJ) method for fabricating flexible wire-shaped supercapacitors. This scalable technique yields high-performance electrodes suitable for wearable electronics and microrobotics.

Keywords:
atmospheric pressure plasma jetcopper sulfidemicro‐supercapacitornanostructured materialswire supercapacitor

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Flexible supercapacitors are crucial for wearable electronics and microrobotics.
  • Copper sulfide offers excellent electrochemical properties for energy storage.
  • Conventional synthesis methods lack scalability for wire-shaped devices.

Purpose of the Study:

  • To develop a scalable and efficient fabrication method for wire-shaped flexible supercapacitor electrodes.
  • To utilize atmospheric pressure plasma jet (APPJ) technology for both surface treatment and material synthesis.
  • To demonstrate the performance of supercapacitors fabricated using this novel technique.

Main Methods:

  • Fabrication of wire-shaped microscale electrodes using an atmospheric pressure plasma jet (APPJ) integrated with a winding mechanism.
  • Implementation of roll-to-roll processing for continuous and scalable manufacturing.
  • Assembly of a wire-shaped solid-state flexible asymmetric supercapacitor in a coaxial configuration.

Main Results:

  • Achieved high specific capacitance (153.39 mF cm-2) and specific energy density (15.48 µWh cm-2).
  • Demonstrated excellent capacitance retention of 91.32% after 30,000 charge-discharge cycles.
  • The assembled supercapacitor exhibited exceptional flexibility and robust energy storage performance.

Conclusions:

  • The APPJ-based fabrication method offers a scalable and efficient approach for producing high-performance flexible wire-shaped supercapacitors.
  • This technology holds significant promise for the advancement of wearable electronics and microrobotic systems.
  • The developed supercapacitors show practical applicability due to their flexibility and energy storage capabilities.