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Two-photon-induced stretchable graphene supercapacitors.

Litty V Thekkekara1, Xi Chen1, Min Gu2

  • 1Laboratory of Artificial-Intelligence Nanophotonics, School of Science, RMIT University, Melbourne, Victoria, 3001, Australia.

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|August 8, 2018
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Summary
This summary is machine-generated.

Researchers developed advanced 3D micro-supercapacitors using laser writing. These stretchable devices offer enhanced energy storage, surpassing lithium-ion batteries for wearable technology integration.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Energy Storage

Background:

  • Direct laser writing (DLW) offers cost-effective, high-resolution 3D fabrication.
  • Stretchable energy storage is crucial for wearable electronics and integrated systems.

Purpose of the Study:

  • To develop high-performance, stretchable biomimetic 3D micro-supercapacitors.
  • To enhance energy storage density and charge transfer capabilities.

Main Methods:

  • Utilized two-photon direct laser writing technology.
  • Employed multilayered graphene oxide films for electrode fabrication.
  • Achieved fractal electrode distances down to 1 µm.

Main Results:

  • Demonstrated enhanced charge transfer capability (order of 10^2).
  • Achieved energy storage density exceeding current lithium-ion batteries.
  • Increased stretchability to 150% and volumetric capacitance to 86 mF/cm³.

Conclusions:

  • Additive nanofabrication method is suitable for self-sustainable stretchable energy storage.
  • High energy density flexible and stretchable storage enables on-chip sensing and monitoring.
  • The technology holds promise for next-generation wearable devices.