Highly Flexible Environmentally friendly Printed Supercapacitors

T. M. Kraft, M. Kujala, A. Railanmaa, S. Lehtimäki, Terho Kololuoma, J. Keskinen, D. Lupo (Corresponding author), Matti Mäntysalo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In this study, we propose a highly flexible environmentally friendly supercapacitor suitable for low-power Internet-of- Everything applications and the effect of bending (both static and cyclic) on its electrical performance. The supercapacitors are all comprised of carbon electrodes (activated carbon (AC) on a graphite current collector) printed on a flexible plastic substrate, with a NaCl (aq) electrolyte. The capacitance of all the devices is on the order of 0.3 F. Two different substrates (A1 coated PET and PP/PA/EVOH/PA/PE [PP-PE]) as well as two different top-bottom substrate sealing methods (heat sealing, adhesive film) were investigated, with the PP-PE substrate and adhesive film sealing found to be preferable. However, all supercapacitors exhibited a rather high tolerance for bending down to a 1.25 cm radius. Little effect on bending reliability was found on the electrode fabrication process (roll-to-roll (R2R) vs. screen printing and manual stencil printing), however R2R printed devices have a higher uniformity of electrical properties. It was confirmed that, if the sealing method is resilient to bending, the degradation of the printed films are not the limiting factor in device flexibility.

Original languageEnglish
Title of host publication18th International Conference on Nanotechnology, NANO 2018
PublisherIEEE Institute of Electrical and Electronic Engineers
Number of pages4
ISBN (Electronic)978-1-5386-5336-4
ISBN (Print)978-1-5386-5337-1
DOIs
Publication statusPublished - 24 Jan 2019
MoE publication typeA4 Article in a conference publication
Event18th International Conference on Nanotechnology, NANO 2018 - Cork, Ireland
Duration: 23 Jul 201826 Jul 2018
Conference number: 18

Publication series

SeriesProceedings of the IEEE Conference on Nanotechnology
ISSN1944-9399

Conference

Conference18th International Conference on Nanotechnology, NANO 2018
Abbreviated titleNANO 2018
CountryIreland
CityCork
Period23/07/1826/07/18

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Keywords

  • supercapacitors
  • substrates
  • electrodes
  • heating systems
  • printing
  • carbon
  • electrolytes

Cite this

Kraft, T. M., Kujala, M., Railanmaa, A., Lehtimäki, S., Kololuoma, T., Keskinen, J., Lupo, D., & Mäntysalo, M. (2019). Highly Flexible Environmentally friendly Printed Supercapacitors. In 18th International Conference on Nanotechnology, NANO 2018 [8626290] IEEE Institute of Electrical and Electronic Engineers . Proceedings of the IEEE Conference on Nanotechnology https://doi.org/10.1109/NANO.2018.8626290