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Updated: Sep 25, 2025

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
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A flexible polyelectrolyte-based gel polymer electrolyte for high-performance all-solid-state supercapacitor

Chaojing Yan1, Mengyuan Jin1, Xinxin Pan1

  • 1Department of Materials Science, Fudan University Shanghai 200433 China xhma@fudan.edu.cn.

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|May 2, 2022
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Summary
This summary is machine-generated.

Researchers developed a flexible gel polymer electrolyte (PGPE) using UV-assisted polymerization. This novel PGPE enables high-performance, durable all-solid-state supercapacitors with excellent ionic conductivity and mechanical strength.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Science

Background:

  • Flexible electronics require advanced energy storage solutions.
  • Gel polymer electrolytes (GPEs) offer potential for solid-state devices but often face challenges in conductivity and mechanical stability.
  • Developing robust and efficient GPEs is crucial for next-generation portable and wearable power sources.

Purpose of the Study:

  • To synthesize a novel flexible polyelectrolyte-based gel polymer electrolyte (PGPE) using a simple UV-assisted polymerization method.
  • To investigate the electrochemical properties, ionic conductivity, and mechanical strength of the prepared PGPE.
  • To fabricate and evaluate the performance of an all-solid-state supercapacitor utilizing the developed PGPE.

Main Methods:

  • A simple UV-assisted polymerization process was employed to create the flexible PGPE.
  • The ionic conductivity of the PGPE was measured using electrochemical impedance spectroscopy.
  • An all-solid-state supercapacitor was assembled using the PGPE membrane and activated carbon electrodes.
  • Electrochemical performance, including specific capacitance, energy density, power density, and cycle life, was assessed through galvanostatic charge-discharge tests.

Main Results:

  • The synthesized PGPE demonstrated favorable mechanical strength and high ionic conductivity (66.8 mS cm⁻¹ at 25 °C) due to charged groups in its matrix.
  • The fabricated all-solid-state supercapacitor exhibited excellent electrochemical performance with a specific capacitance of 64.92 F g⁻¹ at 1 A g⁻¹.
  • The supercapacitor achieved a maximum energy density of 13.26 W h kg⁻¹ and a maximum power density of 2.26 kW kg⁻¹.
  • The device maintained 94.63% capacitance retention after 10,000 cycles and showed stable performance under bending conditions.

Conclusions:

  • The UV-assisted polymerization offers a simple and effective route for preparing flexible PGPEs.
  • The developed PGPE is a promising candidate for flexible, high-performance all-solid-state supercapacitors.
  • The PGPE-based supercapacitors exhibit excellent electrochemical stability, durability, and mechanical flexibility, suitable for advanced energy storage applications.