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Issue 46, 2014
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Carbonaceous multiscale-cellular foams as novel electrodes for stable, efficient lithium–sulfur batteries

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Abstract

Porous carbon foams were prepared by pyrolysis of a phenolic resin by a dual template approach using silica monoliths as hard templates and triblock copolymers as soft templating agents. A macroporosity of 50–80% arose from the Si(HIPE) hard template, while the soft template generated micro- or meso-porosity according to the operating procedure. The final materials exhibited a BET specific surface area of 400–900 m2 g−1, depending on whether non-ionic surfactants were used during the synthesis; moreover, their performances as Li–sulfide battery positive electrodes were investigated. We determined that the novel 2P5HF carbon foam presents more than 800 mA h g−1 (150 mA h cm−3) of remnant capacity after 50 cycles, an unprecedented performance.

Graphical abstract: Carbonaceous multiscale-cellular foams as novel electrodes for stable, efficient lithium–sulfur batteries

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Article information


Submitted
07 Apr 2014
Accepted
06 May 2014
First published
06 May 2014

RSC Adv., 2014,4, 23971-23976
Article type
Communication
Author version available

Carbonaceous multiscale-cellular foams as novel electrodes for stable, efficient lithium–sulfur batteries

M. Depardieu, R. Janot, C. Sanchez, A. Bentaleb, C. Gervais, M. Birot, R. Demir-Cakan, R. Backov and M. Morcrette, RSC Adv., 2014, 4, 23971
DOI: 10.1039/C4RA03110E

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