Volume 227, 2021

Multifunctional coatings of exfoliated and reassembled graphite on cellulosic substrates

Abstract

Exfoliated and reassembled graphite (ERG) forms macroscopic, high aspect ratio (1 : >106) and highly conductive coating layers that are strongly adherent to paper, wood, cloth, ceramic and other substrates. The coating precursor is an aqueous dispersion of graphite that exfoliates spontaneously in alkaline cellulose solutions, forming stable dispersions. These can be applied to the substrates by using different painting, coating and lithography techniques. The coating morphology changes from highly smooth to porous and rough, depending on the finishing procedure used. Coated paper sheets are flexible and they perform as leads in electrical circuitry and as electrodes in electrodeposition, supercapacitors, hygroelectricity cells and other electrochemical devices suitable for flexible and wearable electronics. These unique properties of ERG are explained as a consequence of the amphiphilic character of cellulose, which allows it to play the roles of exfoliant, dispersant, stabilizer, adhesive and plasticizer, while graphite powder is transformed into a cohesive laminated nanocomposite.

Graphical abstract: Multifunctional coatings of exfoliated and reassembled graphite on cellulosic substrates

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
23 Oct 2019
Accepted
07 Jan 2020
First published
28 Feb 2020
This article is Open Access
Creative Commons BY-NC license

Faraday Discuss., 2021,227, 105-124

Multifunctional coatings of exfoliated and reassembled graphite on cellulosic substrates

L. P. Santos, D. Soares da Silva, J. P. Ferreira Bertacchi, K. S. Moreira, T. A. Lima Burgo, B. C. Batista, J. D. Santos, P. Alvarenga de Paula and F. Galembeck, Faraday Discuss., 2021, 227, 105 DOI: 10.1039/C9FD00109C

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements