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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: Apr 13, 2026

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Iron single-atom sites on MXene for a high-performance interdigitated micro-supercapacitor.

Mariyarathinam Vinoth Inbaraj1, Mohandas Sanjay Kumar2, Muthuramalingam Prakash2,3

  • 1Materials Electrochemistry Laboratory, Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur-603 203, Tamil Nadu, India. pgmadura@yahoo.co.in.

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Summary

We engineered flexible micro-supercapacitors using iron single-atom sites on MXene electrodes. These devices offer high energy and power densities for advanced microenergy storage applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Micro-supercapacitors (MSCs) are crucial for portable electronics.
  • Developing high-performance, flexible energy storage remains a challenge.

Purpose of the Study:

  • To engineer scalable and flexible interdigitated micro-supercapacitors (MSCs).
  • To utilize iron single-atom sites on MXene (Fe SAS-MXene) for enhanced electrode performance.

Main Methods:

  • Fabrication of custom-made interdigitated micro-supercapacitors.
  • Characterization of Fe SAS-MXene electrodes for energy storage properties.
  • Analysis of the coordination structure (Fe-O3) influencing performance.

Main Results:

  • Achieved an energy density of 1.23 µWh cm⁻².
  • Attained a power density of 40.0 µW cm⁻².
  • Demonstrated the role of Fe single-atom trigonal coordination with oxygen functional groups.

Conclusions:

  • Fe SAS-MXene electrodes show significant promise for flexible microenergy storage.
  • The engineered MSCs are suitable for scalable and custom applications.
  • Single-atom catalysis on MXene is a viable strategy for advanced energy devices.