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Published in: Journal of Materials Science 40/2022

10-10-2022 | Energy materials

Water lily seed-inspired silicon/carbon composite anode synthesis for high-performance Li-ion battery

Authors: Jonghyun Park, Nilüfer Çakmakçı, Haejoo Kim, Hyeonjun Song, Daehwan Cho, Youngjin Jeong

Published in: Journal of Materials Science | Issue 40/2022

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Abstract

Alternative materials for lithium-ion batteries (LIBs) are studied due to the increasing demand for high-performance energy storage systems for electric cars. Silicon is a powerful candidate as an anode material for LIBs, and silicon–carbon composites with void space were reported to improve battery cyclability thanks to their original structure. Nonetheless, the production of silicon–carbon composite with void space needs chemical etching which contains harmful and dangerous chemicals. In this study, silicon–carbon composite with void space (Si/void/C), inspired by water lily seed is prepared with the polymer coating method instead of chemical etching. The multiple silicon particles are polymer-coated rather than individual silicon particles to achieve a more compact structure. Polymethyl methacrylate is sacrificed to form a void space, and conductive carbon acetylene black (AB) is introduced in this void space. The carbon layer is achieved from the carbonization of iodine and heat-treated polyvinyl alcohol that is also investigated step-by-step with Fourier-transform infrared spectroscopy and thermogravimetric analysis. The prepared silicon–carbon composite anode (Si/void/AB/C) presents a high reversible capacity after 400 cycles and high coulombic efficiency. This study paves the way for the industrialization of high-performance silicon-based anode for LIBs.

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Appendix
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Metadata
Title
Water lily seed-inspired silicon/carbon composite anode synthesis for high-performance Li-ion battery
Authors
Jonghyun Park
Nilüfer Çakmakçı
Haejoo Kim
Hyeonjun Song
Daehwan Cho
Youngjin Jeong
Publication date
10-10-2022
Publisher
Springer US
Published in
Journal of Materials Science / Issue 40/2022
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-022-07781-w

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