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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

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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One-Step Fabrication of 2.5D CuMoOx Interdigital Microelectrodes Using Numerically Controlled Electric Discharge

Shunqi Yang1, Ri Chen2, Fu Huang2

  • 1College of Informatics, Huazhong Agricultural University, Wuhan 430070, China.

Micromachines
|November 27, 2024
PubMed
Summary

Researchers developed a novel one-step method using numerically controlled electric discharge machining (NCEDM) to create advanced binary metal oxide (BMO) micro-supercapacitors. This technique enhances capacity and stability for portable electronics.

Keywords:
CuMoOxbinary metal oxidescoplanar micro-supercapacitorsmachining voltagenumerically controlled electric discharging machining

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Binary metal oxides (BMOs) are promising for coplanar micro-supercapacitors (CMSCs) due to their capacity and stability.
  • Current BMO microelectrode fabrication methods are complex, limiting CMSC development.
  • Wearable and portable electronics demand efficient energy storage solutions like CMSCs.

Purpose of the Study:

  • To introduce a novel, simplified fabrication method for BMO-based CMSCs.
  • To demonstrate controllable capacity in CMSCs by adjusting fabrication parameters.
  • To improve the performance of CMSCs for next-generation electronic devices.

Main Methods:

  • One-step fabrication of 2.5D copper-molybdenum oxide (CuMoOx)-based CMSCs (CuMoCMSCs) using numerically controlled electric discharge machining (NCEDM).
  • Adjustment of NCEDM machining voltage to control the capacity of CuMoCMSCs.
  • Performance evaluation of CuMoCMSCs, including capacity and operating rate.

Main Results:

  • Achieved a one-step fabrication of CuMoCMSCs using NCEDM.
  • Demonstrated controllable capacity by varying NCEDM machining voltage.
  • CuMoCMSCs60 exhibited superior performance, operating at 10 V s-1 with 40.3 mF cm-2 capacity, over four times that of single MoOx CMSCs.
  • CuMoOx BMOs addressed the poor electroconductivity issue of MoOx.

Conclusions:

  • The NCEDM technique offers an efficient, environmentally friendly, automatic, and intelligent approach for fabricating BMO materials and microdevices.
  • This method overcomes limitations of traditional fabrication, paving the way for advanced BMO CMSCs.
  • The developed technique enables the creation of high-performance CMSCs for wearable and portable electronics.