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- Kim, Dong Suk
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High-yield synthesis of single-crystal silicon nanoparticles as anode materials of lithium ion batteries via photosensitizer-assisted laser pyrolysis
- Author(s)
- Kim, Seongbeom, Hwang, Chihyun, Park, Song Yi, Ko, Seo-Jin, Park, Hyungmin, Choi, Won Chul, Kim, Jong Bok, Kim, Dong Suk, Park, Soojin, Kim, Jin Young, Song, Hyun-Kon
- Issued Date
- 2014-11
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.42, pp.18070 - 18075
- Abstract
- Single crystal silicon nanoparticles (Si-NPs) of 20 nm were produced via laser pyrolysis with a virtually complete conversion from SiH4 to Si-NPs. SF6 was used as the photosensitizer to transfer laser beam energy to silicon precursors, dramatically enhancing crystallinity of Si-NPs and their production efficiency. By using their well-developed crystalline structure, the directional volume expansion of Si-NPs was confirmed during lithiation. Lithiation/delithiation kinetics of our Si-NPs was superior to that of their amorphous counterparts due to the footprinted Li+ pathways formed during amorphization.
- Publisher
- ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY
- ISSN
- 2050-7488
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