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Printable and disposable supercapacitor from nanocellulose and carbon nanotubes

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Details

Original languageEnglish
Title of host publicationESTC 2014, 5th Electronics System-Integration Technology Conference, September 16 – 18, 2014, Helsinki, Finland
PublisherInstitute of Electrical and Electronics Engineers IEEE
Pages1-6
Number of pages6
ISBN (Print)978-147994026-4
DOIs
Publication statusPublished - 2014
Publication typeA4 Article in a conference publication
EventElectronics System-Integration Technology Conference -
Duration: 1 Jan 2014 → …

Conference

ConferenceElectronics System-Integration Technology Conference
Period1/01/14 → …

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 Ohms. 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.

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