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Silicon–carbon composite dispersed in a carbon paper substrate for solid polymer lithium-ion batteries.
- Source :
-
Journal of Power Sources . Feb2014, Vol. 248, p1275-1280. 6p. - Publication Year :
- 2014
-
Abstract
- Abstract: Carbon coated silicon (Si/C) dispersed in a carbon paper (CP) was examined as the anode for solid polymer lithium-ion batteries. The CP was prepared by pyrolysis of poly(acrylonitrile) fiber and Manila hemp non-woven cloth at 2600 °C under an inert atmosphere. The Si/C composite was formed by pyrolysis of a slurry consisting of Si power and a solution of polyvinyl chloride in tetrahydrofuran as the carbon source. Si/C:CP with a weight ratio of 20:100 had a high initial capacity of 980 mAh g−1 of Si/C and a high initial columbic efficiency of 77%, and also exhibited excellent capacity retention with a reversible capacity of 710 mAh g−1 of Si/C even after 250 cycles at a charge and discharge rate of 0.1 A g−1. The carbon fiber framework in the carbon paper could adsorb the volume change of Si during the lithium insertion and stripping processes. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 248
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 92653422
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2013.09.072