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Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material
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Development of Light-Scribing Process Using L-Ascorbic Acid for Graphene Micro-Supercapacitor.

Seorin Park1, Da Young Lee1, Sunghun Cho1

  • 1School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.

Micromachines
|July 27, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method for creating graphene micro-patterns for microscale energy storage devices. This approach enhances performance and reduces fabrication time for micro-supercapacitors.

Keywords:
graphenel-ascorbic acidlight-scribingmicro-patterningmicro-supercapacitor

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Energy Storage

Background:

  • Smart technologies drive demand for compact energy storage.
  • Microscale energy storage is crucial for miniaturized electronics.
  • Graphene-based micro-supercapacitors (MSCs) offer high performance.

Purpose of the Study:

  • To develop a facile and practical method for fabricating interdigitated graphene micro-patterns.
  • To improve the electrical and electrochemical performance of micro-patterns.
  • To enable high-performance MSCs for smart devices.

Main Methods:

  • Utilized laser-induced scribing (LSC) process.
  • Incorporated l-ascorbic acid (L-AA) and preheating treatment.
  • Achieved a higher degree of graphene oxide (GO) reduction compared to conventional methods.

Main Results:

  • Fabricated interdigitated graphene micro-patterns with improved performance.
  • Achieved a capacitance of 14.1 F/cm³.
  • Demonstrated high energy density (1.78 mWh/cm³), power density (69.9 mW/cm³), excellent cycling stability (88.2% after 10,000 cycles), and rate capability (81.1% at 1.00 A/cm³).

Conclusions:

  • The LSC process with L-AA and preheating is an effective method for producing high-performance graphene micro-patterns.
  • This fabrication technique significantly shortens processing time.
  • The developed MSCs are suitable for miniaturized electronic devices.