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Issue 42, 2014
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High-yield synthesis of single-crystal silicon nanoparticles as anode materials of lithium ion batteries via photosensitizer-assisted laser pyrolysis

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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.

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

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Supplementary files

Article information


Submitted
01 Jul 2014
Accepted
31 Aug 2014
First published
02 Sep 2014

J. Mater. Chem. A, 2014,2, 18070-18075
Article type
Paper

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

S. Kim, C. Hwang, S. Y. Park, S. Ko, H. Park, W. C. Choi, J. B. Kim, D. S. Kim, S. Park, J. Y. Kim and H. Song, J. Mater. Chem. A, 2014, 2, 18070
DOI: 10.1039/C4TA03358B

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