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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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Related Experiment Video

Updated: Jul 12, 2025

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
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Implementation of High-Capacity 3D Ti3C2TX MXene Supercapacitors with Terminal Group Modification.

Zemao Xiao1,2, Kaisheng Sun1, Yang Zheng1

  • 1Xinjiang Production & Construction Corps Key Laboratory of Advanced Energy Storage Materials and Technology and Department of Physics, College of Science, Shihezi University, Shihezi 832003, China.

ACS Applied Materials & Interfaces
|October 25, 2023
PubMed
Summary

Researchers developed a 3D cross-linked MXene film (Zn-A-MXene) for supercapacitors. This material significantly boosts energy storage capacity and stability in flexible devices.

Keywords:
3D microstructureTi3C2TXalkalizationflexible supercapacitorsfreestanding

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • MXene materials possess high theoretical capacity for supercapacitors.
  • Limited practical capacity hinders the development of MXene-based supercapacitors.
  • Surface functional groups and structural integrity are critical for performance.

Purpose of the Study:

  • To engineer a 3D cross-linked Ti3C2Tx MXene film with enhanced electrochemical performance.
  • To improve the specific capacitance and energy density of MXene electrode materials.
  • To develop stable and high-capacity flexible supercapacitors.

Main Methods:

  • Fabrication of a 3D cross-linked MXene film (Zn-A-MXene) using zinc ions (Zn2+) and NaOH.
  • Surface hydroxylation and removal of non-conductive -F functional groups.
  • Assembly of an all-solid-state flexible supercapacitor using the developed MXene film.

Main Results:

  • The 3D Zn-A-MXene film achieved a high specific capacitance of 465.1 F g-1 at 1 A g-1.
  • The flexible supercapacitor demonstrated a high energy density of 9.55 Wh kg at 603.16 W kg.
  • Excellent cycling stability was observed, retaining 81.25% capacity after 5000 cycles.

Conclusions:

  • The synergistic effect of zinc ions and NaOH treatment enhances electrode area and electrolyte accessibility.
  • The developed 3D Zn-A-MXene film is a promising electrode material for high-performance flexible supercapacitors.
  • This approach provides an innovative strategy for designing advanced MXene-based energy storage devices.