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Silicon nanoparticle/carbon nanotube composites for LI-ION battery anodes

Coppey, Nicolas and Noé, Laure and Dupin, Jean-Charles and Puech, Pascal and Vergnes, Hugues and Monthioux, Marc and Caussat, Brigitte Silicon nanoparticle/carbon nanotube composites for LI-ION battery anodes. (2012) In: Carbon 2012, 17-22 Jun 2012, Krakow, Poland .

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Abstract

In the context of high demand for energy in mobile devices, many studies deal with the lithium-ion cell technology. Because of its larger uptake ability of Li, silicon was suggested for being used (combined with a conductive material) instead of graphite, currently the most frequently used anode material for combining good electrical conductivity and the ability to host Li as intercalated ions between the graphenes [1,2]. However, charge/discharge cycles induce fatal structural damages to bulk Si, as a consequence of successive swellings then shrinkings of the Si lattice [3]. Hence bulk graphite and/or Si anode materials could be replaced by nanostructured composites combining mechanical strength, electrical conductivity, and high charge capacity. Carbon nanotubes mixed with silicon nanoparticles appear as a promising material [4-6]. Here, multi-walled carbon nanotubes Graphistrength® were used as substrate for the Fluidized Bed Chemical Vapour Deposition (FBCVD) of silicon from silane (SiH4). The paper describes the synthesis and characterisation of the nanostructured composite material obtained, as well as the results of the electrochemical tests (involving chargedischarge cycles) carried-out to analyze their behavior as Li-ion cell anodes.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Laboratory name:
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Deposited By: Brigitte CAUSSAT-BONNANS
Deposited On:07 Sep 2012 10:31

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