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Capacitor With A Dielectric

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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Related Experiment Video

Updated: Jul 25, 2025

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Published on: November 30, 2022

3D Printed Supercapacitor Exploiting PEDOT-Based Resin and Polymer Gel Electrolyte.

Valentina Bertana¹, Giorgio Scordo², Elena Camilli¹

¹Department of Applied Science and Technology (DISAT), Polytechnic of Turin, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.

|June 28, 2023

Summary

This study introduces a novel resin for 3D printing supercapacitors using stereolithography. The developed material enables the fabrication of functional energy storage devices with competitive energy density.

Keywords:

3D printing PEDOT energy storage stereolithography supercapacitors

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Last Updated: Jul 25, 2025

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Published on: November 30, 2021

Area of Science:

Materials Science
Electrochemistry
Additive Manufacturing

Background:

Growing demand for renewable energy and Internet of Things (IoT) devices necessitates advanced energy storage solutions.
Additive Manufacturing (AM) offers customization for portable energy storage, but resolution limitations exist with techniques like direct ink writing.
Micrometric precision is crucial for fabricating high-performance, miniaturized energy storage devices.

Purpose of the Study:

To develop and characterize a novel resin for stereolithography (SL) 3D printing of supercapacitors (SCs).
To create a printable, UV-curable conductive composite material for fabricating 3D energy storage electrodes.
To evaluate the electrical and electrochemical performance of 3D printed electrodes in an interdigitated device architecture.

Main Methods:

Development of a UV-curable conductive composite resin by mixing Poly(3,4-ethylenedioxythiophene) (PEDOT) with poly(ethylene glycol) diacrylate (PEGDA).
Fabrication of supercapacitor electrodes using a stereolithography (SL) 3D printing process with the developed resin.
Electrical conductivity measurements and electrochemical characterization of the 3D printed electrodes.

Main Results:

The developed resin exhibits electrical conductivity within the range of conductive polymers (200 mS/cm).
The 3D printed supercapacitor devices achieved an energy density of 0.68 µWh/cm², which is comparable to literature values.
The stereolithography process enabled the fabrication of functional electrodes with micrometric precision.

Conclusions:

A novel, printable, and UV-curable conductive resin was successfully developed for SL 3D printing of supercapacitors.
The developed material and process are suitable for fabricating functional energy storage devices with competitive performance.
This advancement holds potential for customized and portable energy storage solutions.