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Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 42(2), p. 18070-18075

DOI: 10.1039/c4ta03358b

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High-yield synthesis of single-crystal silicon nanoparticles as anode materials of lithium ion batteries via photosensitizer-assisted laser pyrolysis

Journal article published in 2014 by Seongbeom Kim, Chihyun Hwang, Song Yi Park ORCID, Seo-Jin Ko, Hyungmin Park, Won Chul Choi, Jong Bok Kim, Dong Suk Kim, Soojin Park, Jin Young Kim, Hyun-Kon Song
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Single crystal silicon nanoparticles (Si-NPs) of 20 nm were produced via a laser pyrolysis at a virtually complete conversion from SiH4 into 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.