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Simulation of the Impact of Si Shell Thickness on the Performance of Si-Coated Vertically Aligned Carbon Nanofiber as Li-Ion Battery Anode.
- Source :
-
Nanomaterials (2079-4991) . 2015, Vol. 5 Issue 4, p2268-2278. 11p. - Publication Year :
- 2015
-
Abstract
- Micro- and nano-structured electrodes have the potential to improve the performance of Li-ion batteries by increasing the surface area of the electrode and reducing the diffusion distance required by the charged carriers. We report the numerical simulation of Lithium-ion batteries with the anode made of core-shell heterostructures of silicon-coated carbon nanofibers. We show that the energy capacity can be significantly improved by reducing the thickness of the silicon anode to the dimension comparable or less than the Li-ion diffusion length inside silicon. The results of simulation indicate that the contraction of the silicon electrode thickness during the battery discharge process commonly found in experiments also plays a major role in the increase of the energy capacity. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LITHIUM-ion batteries
*CARBON nanofibers
*NANOSTRUCTURED materials
Subjects
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 5
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 112012523
- Full Text :
- https://doi.org/10.3390/nano5042268