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Pigment-Cellulose Nanofibril Composite and Its Application as a Separator-Substrate in Printed Supercapacitors

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Details

Original languageEnglish
Pages (from-to)1040-1047
Number of pages8
JournalElectronic Materials Letters
Volume11
Issue number6
DOIs
Publication statusPublished - 2015
Publication typeA1 Journal article-refereed

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.

Keywords

  • cellulose nanofibrils (CNF), graphene, carbon nanotubes, supercapacitors, separator, substrate

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