Low-cost, solution processable carbon nanotube supercapacitors and their characterization

Suvi Lehtimäki; Sampo Tuukkanen; Juho Pörhönen; Pasi Moilanen; Jorma Virtanen; Mari Honkanen; Donald Lupo

doi:10.1007/s00339-014-8547-4

Low-cost, solution processable carbon nanotube supercapacitors and their characterization

Suvi Lehtimäki
, Sampo Tuukkanen
, Juho Pörhönen
, Pasi Moilanen
, Jorma Virtanen
, Mari Honkanen
, Donald Lupo

Research output: Contribution to journal › Article › Scientific › peer-review

36 Citations (Scopus)

145 Downloads (Pure)

Abstract

We report ecological and low-cost carbon nanotube (CNT) supercapacitors fabricated using a simple, scalable solution processing method, where the use of a highly porous and electrically conductive active material eliminates the need for a current collector. Electrodes were fabricated on a poly(ethylene terephthalate) substrate from a printable multi-wall CNT ink, where the CNTs are solubilized in water using xylan as a dispersion agent. The dispersion method facilitates a very high concentration of CNTs in the ink. Supercapacitors were assembled using a paper separator and an aqueous NaCl electrolyte and the devices were characterized with a galvanostatic discharge method defined by an industrial standard. The capacitance of the 2 cm(2) devices was 6 mF/cm(2) (2.3 F/g) and equivalent series resistance 80 Omega. Low-cost supercapacitors fabricated from safe and environmentally friendly materials have potential applications as energy storage devices in ubiquitous and autonomous intelligence as well as in disposable low-end products.

Translated title of the contribution	Low-cost, solution processable carbon nanotube supercapacitors and their characterization
Original language	English
Pages (from-to)	1329-1334
Number of pages	6
Journal	Applied Physics A: Materials Science and Processing
Volume	117
Issue number	3
DOIs	https://doi.org/10.1007/s00339-014-8547-4
Publication status	Published - Nov 2014
Publication type	A1 Journal article-refereed

Funding

The authors thank Veijo Kangas of Morphona for the preparation of the ink. The authors acknowledge funding from the Academy of Finland (Dec. No. 138146 and 139881) and the Finnish Funding Agency for Technology and Innovation (TEKES, Dec. No. 40049/12). S. Lehtimaki would like to thank Tekniikan edistamissaatio for supporting the research.

Keywords

ELECTROCHEMICAL CAPACITORS
PERFORMANCE
DISPERSION
CATALYST

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Publication forum level 2

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10.1007/s00339-014-8547-4

Lehtimäki_ApplPhysA_2014_CNT-supercapacitors_Self-Archive
The final publication is available at Springer via http://dx.doi.org/10.1007/s00339-014-8547-4
Accepted author manuscript, 315 KBLicence: CC BY-ND

http://urn.fi/URN:NBN:fi:tty-201603183661

Cite this

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abstract = "We report ecological and low-cost carbon nanotube (CNT) supercapacitors fabricated using a simple, scalable solution processing method, where the use of a highly porous and electrically conductive active material eliminates the need for a current collector. Electrodes were fabricated on a poly(ethylene terephthalate) substrate from a printable multi-wall CNT ink, where the CNTs are solubilized in water using xylan as a dispersion agent. The dispersion method facilitates a very high concentration of CNTs in the ink. Supercapacitors were assembled using a paper separator and an aqueous NaCl electrolyte and the devices were characterized with a galvanostatic discharge method defined by an industrial standard. The capacitance of the 2 cm(2) devices was 6 mF/cm(2) (2.3 F/g) and equivalent series resistance 80 Omega. Low-cost supercapacitors fabricated from safe and environmentally friendly materials have potential applications as energy storage devices in ubiquitous and autonomous intelligence as well as in disposable low-end products.",

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AU - Moilanen, Pasi

AU - Virtanen, Jorma

AU - Honkanen, Mari

AU - Lupo, Donald

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ER -

Low-cost, solution processable carbon nanotube supercapacitors and their characterization

Abstract

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Keywords

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