Pigment-cellulose nanofibril composite and its application as a separator-substrate in printed supercapacitors

Katariina Torvinen (Corresponding Author), Suvi Lehtimäki, Janne T. Keränen, Jenni Sievänen, Jari Vartiainen, Erkki Hellén, Donald Lupo, Sampo Tuukkanen

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)

Abstract

Pigment-cellulose nanofibril (PCN) composites were manufactured in a pilot line and used as a separator-substrate in printed graphene and carbon nanotube supercapacitors. The composites consisted typically of 80% pigment and 20% cellulose nanofibrils (CNF). This composition makes them a cost-effective alternative as a substrate for printed electronics at high temperatures that only very special plastic films can nowadays stand. The properties of these substrates can be varied within a relatively large range by the selection of raw materials and their relative proportions. A semi-industrial scale pilot line was successfully used to produce smooth, flexible, and nanoporous composites, and their performance was tested in a double functional separator-substrate element in supercapacitors. The nanostructural carbon films printed on the composite worked simultaneously as high surface area active electrodes and current collectors. Low-cost supercapacitors made from environmentally friendly materials have significant potential for use in flexible, wearable, and disposable low-end products.
Original languageEnglish
Pages (from-to)1040-1047
JournalElectronic Materials Letters
Volume11
Issue number6
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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Separators
Pigments
Cellulose
Composite materials
Substrates
Plastic films
Carbon Nanotubes
Graphite
Carbon films
Graphene
Costs
Carbon nanotubes
Raw materials
Electronic equipment
Electrodes
Supercapacitor
Chemical analysis
Temperature

Keywords

  • cellulose nanofibrils (CNF)
  • graphene
  • carbon nanotubers
  • supercapacitors
  • separator
  • substrate

Cite this

Torvinen, Katariina ; Lehtimäki, Suvi ; Keränen, Janne T. ; Sievänen, Jenni ; Vartiainen, Jari ; Hellén, Erkki ; Lupo, Donald ; Tuukkanen, Sampo. / Pigment-cellulose nanofibril composite and its application as a separator-substrate in printed supercapacitors. In: Electronic Materials Letters. 2015 ; Vol. 11, No. 6. pp. 1040-1047.
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Pigment-cellulose nanofibril composite and its application as a separator-substrate in printed supercapacitors. / Torvinen, Katariina (Corresponding Author); Lehtimäki, Suvi; Keränen, Janne T.; Sievänen, Jenni; Vartiainen, Jari; Hellén, Erkki; Lupo, Donald; Tuukkanen, Sampo.

In: Electronic Materials Letters, Vol. 11, No. 6, 2015, p. 1040-1047.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Torvinen, Katariina

AU - Lehtimäki, Suvi

AU - Keränen, Janne T.

AU - Sievänen, Jenni

AU - Vartiainen, Jari

AU - Hellén, Erkki

AU - Lupo, Donald

AU - Tuukkanen, Sampo

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AB - Pigment-cellulose nanofibril (PCN) composites were manufactured in a pilot line and used as a separator-substrate in printed graphene and carbon nanotube supercapacitors. The composites consisted typically of 80% pigment and 20% cellulose nanofibrils (CNF). This composition makes them a cost-effective alternative as a substrate for printed electronics at high temperatures that only very special plastic films can nowadays stand. The properties of these substrates can be varied within a relatively large range by the selection of raw materials and their relative proportions. A semi-industrial scale pilot line was successfully used to produce smooth, flexible, and nanoporous composites, and their performance was tested in a double functional separator-substrate element in supercapacitors. The nanostructural carbon films printed on the composite worked simultaneously as high surface area active electrodes and current collectors. Low-cost supercapacitors made from environmentally friendly materials have significant potential for use in flexible, wearable, and disposable low-end products.

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