Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery

Abstract Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery is investigated. Results indicate that CuO is decomposed and alloyed with Si forming amorphous Cu-Si solid solution due to high energy impacting during high energy mechanical millin...

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Autores principales:	Shang-Chieh Hou, Tsan-Yao Chen, Yu-Hsien Wu, Hung-Yuan Chen, Xin-Dian Lin, Yu-Qi Chen, Jow-Lay Huang, Chia-Chin Chang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/49de2f96fac9492189d4fa9cc8d90f8e
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spelling	oai:doaj.org-article:49de2f96fac9492189d4fa9cc8d90f8e2021-12-02T15:09:04ZMechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery10.1038/s41598-018-30703-32045-2322https://doaj.org/article/49de2f96fac9492189d4fa9cc8d90f8e2018-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-30703-3https://doaj.org/toc/2045-2322Abstract Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery is investigated. Results indicate that CuO is decomposed and alloyed with Si forming amorphous Cu-Si solid solution due to high energy impacting during high energy mechanical milling (HEMM). Upon carbonization at 800 °C, heating energy induces Cu3Si to crystallize in nanocrystalline/amorphous Si-rich matrix enhancing composite rigidity and conductivity. In addition, residual carbon formed on outside surface of composite powder as a buff space further alleviates volume change upon lithiation/delithiation. Thus, coin cell made of C-coated Si/Cu3Si-based composite as negative electrode (active materials loading, 2.3 mg cm−2) conducted at 100 mA g−1 performs the initial charge capacity of 1812 mAh g−1 (4.08 mAh cm−2) columbic efficiency of 83.7% and retained charge capacity of 1470 mAh g−1 (3.31 mAh cm−2) at the end of the 100th cycle, opening a promised window as negative electrode materials for lithium ion batteries.Shang-Chieh HouTsan-Yao ChenYu-Hsien WuHung-Yuan ChenXin-Dian LinYu-Qi ChenJow-Lay HuangChia-Chin ChangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shang-Chieh Hou Tsan-Yao Chen Yu-Hsien Wu Hung-Yuan Chen Xin-Dian Lin Yu-Qi Chen Jow-Lay Huang Chia-Chin Chang Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery
description	Abstract Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery is investigated. Results indicate that CuO is decomposed and alloyed with Si forming amorphous Cu-Si solid solution due to high energy impacting during high energy mechanical milling (HEMM). Upon carbonization at 800 °C, heating energy induces Cu3Si to crystallize in nanocrystalline/amorphous Si-rich matrix enhancing composite rigidity and conductivity. In addition, residual carbon formed on outside surface of composite powder as a buff space further alleviates volume change upon lithiation/delithiation. Thus, coin cell made of C-coated Si/Cu3Si-based composite as negative electrode (active materials loading, 2.3 mg cm−2) conducted at 100 mA g−1 performs the initial charge capacity of 1812 mAh g−1 (4.08 mAh cm−2) columbic efficiency of 83.7% and retained charge capacity of 1470 mAh g−1 (3.31 mAh cm−2) at the end of the 100th cycle, opening a promised window as negative electrode materials for lithium ion batteries.
format	article
author	Shang-Chieh Hou Tsan-Yao Chen Yu-Hsien Wu Hung-Yuan Chen Xin-Dian Lin Yu-Qi Chen Jow-Lay Huang Chia-Chin Chang
author_facet	Shang-Chieh Hou Tsan-Yao Chen Yu-Hsien Wu Hung-Yuan Chen Xin-Dian Lin Yu-Qi Chen Jow-Lay Huang Chia-Chin Chang
author_sort	Shang-Chieh Hou
title	Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery
title_short	Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery
title_full	Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery
title_fullStr	Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery
title_full_unstemmed	Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery
title_sort	mechanochemical synthesis of si/cu3si-based composite as negative electrode materials for lithium ion battery
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/49de2f96fac9492189d4fa9cc8d90f8e
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Mechanochemical synthesis of Si/Cu3Si-based composite as negative electrode materials for lithium ion battery

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