Issue 5, 2019

Effect of component content variation on composition and structure of activated carbon in PVDF:K2CO3

Abstract

Percolative composites consisting of potassium carbonate dispersed in polyvinylidene fluoride (PVDF) polymeric matrix have shown high dielectric constant and electrical conductivity due to the formation of chemically activated carbon interfaces in the composite. In this paper, a series of PVDF/K2CO3 films with different component contents were prepared and investigated by Raman and X-ray photoelectron spectroscopies to clarify chemical composition, structure and formation mechanism of activated carbon. The results revealed the presence of a reaction loop to consume both constituent phases and the formation of sp2 carbon rings in the yielded activated carbon due to cross-linking dehydrofluorination of PVDF during thermal treatment. The sp2 content showed a non-linear dependence on K2CO3 content with the presence of an optimal value corresponding to the highest dielectric constant and electrical conductivity. This study thus can give a direction for future fabrication of PVDF/K2CO3 electrode materials for supercapacitors.

Graphical abstract: Effect of component content variation on composition and structure of activated carbon in PVDF:K2CO3

Supplementary files

Article information

Article type
Paper
Submitted
18 Oct 2018
Accepted
02 Jan 2019
First published
07 Jan 2019

Phys. Chem. Chem. Phys., 2019,21, 2382-2388

Effect of component content variation on composition and structure of activated carbon in PVDF:K2CO3

W. Zhu, K. Okada, Z. Li, J. Zhu, E. Marin and G. Pezzotti, Phys. Chem. Chem. Phys., 2019, 21, 2382 DOI: 10.1039/C8CP06503A

To request permission to reproduce material from this article, 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 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