Laser direct writing of conductive carbon microelectrodes and micro-supercapacitor applications

Akira Watanabe, Jinguang Cai

Research output: Contribution to journalArticlepeer-review

Abstract

The 3D laser direct writing of a carbon microelectrode from a carbon black aqueous dispersion was developed and the carbon electrode was applied to an m-plane micro-supercapacitor (MSC). The thickness of the electrode was increased by repeating the cycle of immersion of a glass sub- strate into an aqueous dispersion, liftuig up the substrate from the dispersion, and galvano-scanning of CO; laser beam on the substrate covered with the carbon black aqueous dispersion. A carbon- manganese oxide (MnxOy) hybrid electrode from a carbon black-manganese (II) acetate tetrahydrate aqueous dispersion was also prepared by the 3D laser direct wilting. The characteristics of m-plane MSCs composed of carbon and carboii-MnsOy hybrid electrodes were studied. A carbon-MnxOy hybrid electrode showed the characteristics of a pseudo MSC and larger capacitance than a pure car- bon electrode.

Original languageEnglish
Pages (from-to)92-96
Number of pages5
JournalJournal of Laser Micro Nanoengineering
Volume15
Issue number2
DOIs
Publication statusPublished - 2020 Sep 1

Keywords

  • 3D laser direct writing
  • Conductive carbon electrode
  • In-plane micro-supercapacitor

ASJC Scopus subject areas

  • Instrumentation
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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