Printable and disposable supercapacitor from nanocellulose and carbon nanotubes

S. Tuukkanen, S. Lehtimäki, F. Jahangir, A.-P. Eskelinen, D. Lupo, S. Franssila

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

16 Citations (Scopus)

Abstract

Supercapacitors are promising energy storage devices providing capacitance much higher than conventional capacitors and higher power density and longer cycle life than Li-batteries. We report printable and disposable supercapacitors fabricated from solution-processed carbon nanotube (CNT) composite material as active electrodes and nanocellulose (NC) as a separator. Use of a highly porous and electrically conducting CNT film as electrode materials eliminates the need of current collector. NC is a robust separator material used instead of conventional polymer separator films. Supercapacitor characterization was done with a galvanostatic discharge method according to an industrial standard. The capacitance of 1.8 cm2 devices was 14.9-16.5 mF (7.4-9.1 mF/cm2 or 2.4-2.9 F/g) and equivalent series resistance (ESR) 74-155 Ω. This type of low-cost energy storage devices fabricated from safe and environmentally friendly materials have obvious applications in autonomous intelligence and disposable low-end products.

Original languageEnglish
Title of host publicationProceedings of the 5th Electronics System-Integration Technology Conference, ESTC 2014
PublisherIEEE
Number of pages6
ISBN (Electronic)9781479940264
DOIs
Publication statusPublished - 18 Nov 2014
MoE publication typeA4 Article in a conference publication
EventElectronics System-Integration Technology Conference - Helsinki, Finland
Duration: 16 Sep 201418 Sep 2014
Conference number: 5

Conference

ConferenceElectronics System-Integration Technology Conference
Abbreviated titleESTC
Country/TerritoryFinland
CityHelsinki
Period16/09/201418/09/2014

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