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Carbon−Silicon Core−Shell Nanowires as High Capacity Electrode for Lithium Ion Batteries
Abstract
We introduce a novel design of carbon-silicon core-shell nanowires for high power and long life lithium battery electrodes. Amorphous silicon was coated onto carbon nanofibers to form a core-shell structure and the resulted core-shell nanowires showed great performance as anode material. Since carbon has a much smaller capacity compared to silicon, the carbon core experiences less structural stress or damage during lithium cycling and can function as a mechanical support and an efficient electron conducting pathway. These nanowires have a high charge storage capacity of approximately 2000 mAh/g and good cycling life. They also have a high Coulmbic efficiency of 90% for the first cycle and 98-99.6% for the following cycles. A full cell composed of LiCoO(2) cathode and carbon-silicon core-shell nanowire anode is also demonstrated. Significantly, using these core-shell nanowires we have obtained high mass loading and an area capacity of approximately 4 mAh/cm(2), which is comparable to commercial battery values.
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Cited by
Interconnected Silicon Hollow Nanospheres for Lithium-Ion Battery Anodes with Long Cycle Life
Yao, Y., McDowell, M. T., Ryu, I., Wu, H., Liu, N., Hu, L., Nix, W. D., & Cui, Y. (2011) · Nano Letters · doi:10.1021/nl201470j · Cited by 1,456
Self-citationWu, H., Yu, G., Pan, L., Liu, N., McDowell, M. T., Bao, Z., & Cui, Y. (2013) · Nature Communications · doi:10.1038/ncomms2941 · Cited by 1,378
Self-citationNanostructured carbon for energy storage and conversion
Candelaria, S. L., Shao, Y., Zhou, W., Li, X., Xiao, J., Zhang, J.-G., Wang, Y., Liu, J., Li, J., & Cao, G. (2012) · Nano Energy · doi:10.1016/j.nanoen.2011.11.006 · Cited by 975
Pinson, M. B., & Bazant, M. Z. (2013) · Journal of The Electrochemical Society · doi:10.1149/2.044302jes · Cited by 946
Arrays of Sealed Silicon Nanotubes As Anodes for Lithium Ion Batteries
Song, T., Xia, J., Lee, J.-H., Lee, D. H., Kwon, M.-S., Choi, J.-M., Wu, J., Doo, S. K., Chang, H., Park, W. I., et al. (2010) · Nano Letters · doi:10.1021/nl100086e · Cited by 894
Metadata
- Authors
- Cui, L.-F., Yang, Y., Hsu, C.-M., & Cui, Y.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-08-05
- Volume
- 9
- Issue
- 9
- Pages
- 3370-3374
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2050394534
- Cited by
- 1,054
- References
- 0
- FWCI
- 54.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Cui, L.-F., Yang, Y., Hsu, C.-M., & Cui, Y. (2009). Carbon−Silicon Core−Shell Nanowires as High Capacity Electrode for Lithium Ion Batteries. Nano Letters. https://doi.org/10.1021/nl901670t
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