Laser direct writing micro-supercapacitors from graphene oxide films

Jinguang Cai, Chao Lv, Akira Watanabe

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)

    Abstract

    This study reports the laser direct writing of graphene oxide (GO) to form reduced graphene oxide (RGO)-GO-RGO interdigitated on-chip micro-supercapacitors (MSCs) by reducing GO to RGO. The resolution of the laser writing lines can be lowered to 10 μm, which is much lower than that formed by the CO2 pulse laser, suggesting the potential to fabricate much smaller MSCs in 10 μm scale. The micro-supercapacitor employed GO itself as the humiditysensitive electrolyte with no need of other electrolytes. The typical device shows a high capacitance of 12.5 mF/cm2 at the scan rate of 10 mV/s at the humidity of 90%, which is much higher than the reported value obtained by the pulsed CO2 laser, even the micro-supercapacitors with electrolytes.

    Original languageEnglish
    Title of host publication16th International Conference on Nanotechnology - IEEE NANO 2016
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages315-317
    Number of pages3
    ISBN (Electronic)9781509039142
    DOIs
    Publication statusPublished - 2016 Nov 21
    Event16th IEEE International Conference on Nanotechnology - IEEE NANO 2016 - Sendai, Japan
    Duration: 2016 Aug 222016 Aug 25

    Publication series

    Name16th International Conference on Nanotechnology - IEEE NANO 2016

    Other

    Other16th IEEE International Conference on Nanotechnology - IEEE NANO 2016
    Country/TerritoryJapan
    CitySendai
    Period16/8/2216/8/25

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

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