Issue 11, 2013

A new room temperature and solvent free carbon coating procedure for battery electrode materials

Abstract

Carbon coating on battery electrode active material powders is a common practice in order to improve their electronic conductivity and the battery calendar life by limiting side reactions (i.e. active material surface degradation and electrolyte decomposition). Such a coating is currently achieved through chemical procedures involving dispersing the powder in a liquid medium with a carbon precursor followed by thermolysis at high temperatures (ca. 700 °C). This energy consuming procedure has the drawback of not being applicable to materials which may decompose or reduce under such conditions. We present herein an alternative procedure based on physical deposition of carbon, carried out at room temperature under dry conditions, hence avoiding the limitations mentioned above and being generally applicable to any electrode active material. Moreover it allows easy achievement of a homogeneous conformal coating with fine control of the coating thickness. Results on selected materials are reported to exemplify the wide application spectrum and performance improvements induced by the coating.

Graphical abstract: A new room temperature and solvent free carbon coating procedure for battery electrode materials

Article information

Article type
Paper
Submitted
12 Apr 2013
Accepted
09 Sep 2013
First published
10 Sep 2013

Energy Environ. Sci., 2013,6, 3363-3371

A new room temperature and solvent free carbon coating procedure for battery electrode materials

A. Ponrouch, A. R. Goñi, M. T. Sougrati, M. Ati, J. Tarascon, J. Nava-Avendaño and M. R. Palacín, Energy Environ. Sci., 2013, 6, 3363 DOI: 10.1039/C3EE41243A

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