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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.
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In 1749, Benjamin Franklin coined the word battery for a series of capacitors connected to store energy. Capacitors store electric potential energy that can be released over a short time. This property means capacitors have a wide range of applications.
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Updated: Aug 25, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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Black Phosphorus/Carbon Nanoframes for Efficient Flexible All-Solid-State Supercapacitor.

Zunbin Duan1, Danni Liu1, Zhaoer Ye1,2

  • 1Shenzhen Engineering Center for the Fabrication of Two-Dimensional Atomic Crystals, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.

Nanomaterials (Basel, Switzerland)
|October 14, 2022
PubMed
Summary

Researchers developed a flexible supercapacitor using black phosphorus and carbon nanoframes. This design enhances charge transport, leading to superior energy storage and stability for flexible electronic devices.

Keywords:
black phosphoruscarbon nanoparticleflexible all-solid-state devicesupercapacitor

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Flexible all-solid-state supercapacitors are crucial for energy storage in photovoltaic systems.
  • Two-dimensional black phosphorus (BP) shows promise as an electrode material but suffers from self-stacking, limiting its performance.
  • Developing strategies to overcome BP's limitations is essential for advanced energy devices.

Purpose of the Study:

  • To design and fabricate a flexible supercapacitor with enhanced performance using black phosphorus and carbon nanoframes.
  • To investigate the effect of embedding carbon nanoparticles into BP interlayers on charge transport and electrochemical properties.
  • To evaluate the stability and energy storage capacity of the developed flexible supercapacitor.

Main Methods:

  • Embedding carbon nanoparticles into the interlayer of black phosphorus microplates to form BP/carbon nanoframe (BP/C NF) structures.
  • Fabricating flexible supercapacitors using the designed BP/C NF material as electrodes.
  • Characterizing the electrochemical performance, including capacitance and stability, through cyclic voltammetry and galvanostatic charge-discharge tests.
  • Assessing the device's performance under repeated bending and long-term cycling conditions.

Main Results:

  • The BP/C NF structure created nano-gaps, facilitating orderly charge transport.
  • The fabricated BP/C supercapacitor (BP/C SC) achieved a high capacity of 372 F g-1, significantly outperforming supercapacitors made from bare BP microplates (32.6 F g-1).
  • The BP/C SC demonstrated excellent stability, retaining approximately 90% of its capacitance after 10,000 bending and long-term cycles.

Conclusions:

  • The strategy of using BP/carbon nanoframes is effective for developing high-performance flexible energy devices.
  • The nano-gap formation in BP/C NF structures promotes efficient charge transport, leading to superior supercapacitor performance.
  • This approach provides a viable pathway for designing advanced two-dimensional nanocomposites for flexible electronics and energy storage applications.