Pyrolytic 3D Carbon Microelectrodes for Electrochemistry

Suhith Hemanth, Claudia Caviglia, Letizia Amato, Thomas Aarøe Anhøj, Arto Heiskanen, Jenny Emnéus, Stephan Sylvest Keller

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    Abstract

    This work presents the fabrication and characterization of suspended three-dimensional (3D) pyrolytic carbon microelectrodes for electrochemical applications. For this purpose, an optimized process with multiple steps of UV photolithography with the negative tone photoresist SU-8 followed by pyrolysis at 900ºC for 1h was developed. With this process, microelectrode chips with a three electrode configuration were fabricated and characterized with cyclic voltammetry (CV) using a 10mM potassium ferri-ferrocyanide redox probe in a custom made batch system with magnetic clamping. The 3D pyrolytic carbon microelectrodes displayed twice the higher peak current compared to 2D.
    Original languageEnglish
    JournalECS Transactions
    Volume72
    Issue number1
    Pages (from-to)117-124
    Number of pages8
    ISSN1938-6737
    DOIs
    Publication statusPublished - 2016

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