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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

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A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
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Updated: May 15, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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An Azo-Based Electrode for All-Around High-Performance Flexible Supercapacitors.

Haoxiang Zhang1,2, Minyong Du1,2, Xinxin Xing1

  • 1Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China.

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|April 11, 2025
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Summary

This study introduces a novel photo-rechargeable supercapacitor for flexible wearable electronics. The new organic electrode material, p-diaminoazobenzene (P-Azo), achieves high energy density and excellent flexibility, enabling self-powered devices.

Keywords:
energy densityflexible electronicsorganic electrodesphoto-rechargeable supercapacitors

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Flexible wearable electronics require self-powering solutions with high energy density and flexibility.
  • Existing supercapacitors often struggle to meet both flexibility and energy density demands.

Purpose of the Study:

  • To develop a novel photo-rechargeable supercapacitor for self-powered flexible wearable electronics.
  • To utilize a new organic electrode material, p-diaminoazobenzene (P-Azo), for enhanced supercapacitor performance.

Main Methods:

  • Fabrication of asymmetric flexible supercapacitors using P-Azo and activated carbon with an adhesive electrolyte.
  • Coupling supercapacitors with perovskite submodules to create a photo-rechargeable system.

Main Results:

  • The P-Azo based supercapacitor demonstrated high energy density (425.2 mW h cm⁻²) and excellent flexibility (90.7% capacitance retention after 80,000 bending cycles).
  • The integrated photo-rechargeable system achieved a 7% overall energy-conversion efficiency.

Conclusions:

  • P-diaminoazobenzene is a promising organic electrode material for high-performance flexible supercapacitors.
  • This work presents a practical approach for powering future wearable electronics through photo-rechargeable supercapacitors.