Printed supercapacitor as hybrid device with an enzymatic power source

Jari Keskinen, Eino Sivonen, Mikael Bergelin, Jan-Erik Eriksson, Pia Sjöberg-Eerola, Matti Valkiainen, Maria Smolander, Anu Vaari, Johanna Uotila, Harry Boer, Saara Tuurala

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

Abstract

Low cost printable power sources are needed e.g. in sensors and RFID applications. As manufacturing method printing techniques are preferred in order to keep the costs low. The materials should also be easily disposable. Enzymatic bio-fuel cells are an alternative for printable primary batteries. Since one drawback of bio-fuel cells is their low power, we have developed supercapacitors that can be combined with enzymatic bio-fuel cells to provide the power peaks necessary in the applications. The materials for the supercapacitors have been chosen to be compatible with the fuel cell and with printing methods, e.g. the activated carbon powder in the electrodes was bound with chitosan. As printing substrates we have used paperboards. The current collectors have been made of graphite and metal inks. Since the voltage requirement is limited to approximately 1 V, aqueous electrolytes have been used. Printed supercapacitors of various sizes have been prepared. The geometrical electrode areas have been between 0.5 and 2 cm2. The maximum feasible output current has been in the order of 50 mA corresponding to about 50 mW power. When the capacitor is used together with an enzymatic power source, the leakage current must be as low as possible. Typical leakage current values have been in the order of 10 µA.
Original languageEnglish
Title of host publicationAdvances in Science and Technology
Subtitle of host publication5th Forum on New Materials Part A
Pages331-336
DOIs
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
Event5th Forum on New Materials - Montecatini Terme, Italy
Duration: 13 Jun 201018 Jun 2010

Publication series

SeriesAdvances in Science and Technology
Volume72
ISSN1662-0356

Conference

Conference5th Forum on New Materials
CountryItaly
CityMontecatini Terme
Period13/06/1018/06/10

Keywords

  • supercapacitor
  • double layer capacitor
  • printed electronics
  • enzymatic power source

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  • Cite this

    Keskinen, J., Sivonen, E., Bergelin, M., Eriksson, J-E., Sjöberg-Eerola, P., Valkiainen, M., Smolander, M., Vaari, A., Uotila, J., Boer, H., & Tuurala, S. (2010). Printed supercapacitor as hybrid device with an enzymatic power source. In Advances in Science and Technology: 5th Forum on New Materials Part A (pp. 331-336). Advances in Science and Technology, Vol.. 72 https://doi.org/10.4028/www.scientific.net/AST.72.331