Transfer Printing of Sub-5 μm Graphene Electrodes for Flexible Microsupercapacitors

Donghoon Song, Ethan B. Secor, Yan Wang, Mark C. Hersam, C. Daniel Frisbie*

*Corresponding author for this work

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Printed graphene microsupercapacitors (MSCs) are attractive for scalable and low-cost on-chip energy storage for distributed electronic devices. Although electronic devices have experienced significant scaling to smaller formats, the corresponding miniaturization of energy storage components has been limited, with a typical resolution of â30 μm for printed graphene patterns to date. Transfer printing is demonstrated here for patterning graphene electrodes with fine line and spacing resolution less than 5 μm. The resulting devices exhibit an exceptionally small footprint (â0.0067 mm2), which provides, to the best of our knowledge, the smallest printed graphene MSCs. Despite this, the devices retain excellent performance with a high areal capacitance of â6.63 mF/cm2 along with excellent electrochemical stability and mechanical flexibility, resulting from an efficient nonplanar electrode structure and an optimized two-step photoannealing method. As a result, this miniaturization strategy facilitates the on-chip integration of printed graphene MSCs to power emerging electronic devices.

Original languageEnglish (US)
Pages (from-to)22303-22310
Number of pages8
JournalACS Applied Materials and Interfaces
Volume10
Issue number26
DOIs
StatePublished - Jul 5 2018

Keywords

  • electrochemical energy storage
  • graphene ink
  • high-resolution electrode
  • photoannealing
  • printed electronics

ASJC Scopus subject areas

  • Materials Science(all)

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