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Synthesis of a yolk-shell nanostructured silicon-based anode for high-performance Li-Ion batteries
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Yang, Xiangjie, Kong, Weikang, Du, Guangyuan, Li, Shilong, Tang, Yueyuan, Cao, Jun, Lu, Xueyi, Tan, Rui and Qian, Guoyu (2023) Synthesis of a yolk-shell nanostructured silicon-based anode for high-performance Li-Ion batteries. Batteries, 9 (9). 446. doi:10.3390/batteries9090446 ISSN 2313-0105.
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Official URL: https://doi.org/10.3390/batteries9090446
Abstract
Silicon is a desirable anode material for Li-ion batteries owing to its remarkable theoretical specific capacity of over 4000 mAh/g. Nevertheless, the poor cycling performance of pure Si electrodes caused by dramatic volume expansion has limited its practical application. To alleviate the adverse effects of Si expansion, we have synthesized anode materials of nano-Si particles trapped in a buffering space and outer carbon-based shells (Si@Void@C). The volume ratio of Si nanoparticle to void space could be adjusted accurately to approximately 1:3, which maintained the structural integrity of the as-designed nanoarchitecture during lithiation/delithiation and achieved a notable specific capacity of ~750 mAh/g for as-prepared half-cells. The yolk-shell nanostructure alleviates volumetric expansion on both material and electrode levels, which enhances the rate performance and cycling stability of the silicon-based anode.
Item Type: | Journal Article | |||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Lithium ion batteries , Lithium ion batteries -- Design and construction, Lithium ion batteries -- Materials, Nanosilicon, Nanostructured materials -- Synthesis, Anodes , Composite materials | |||||||||
Journal or Publication Title: | Batteries | |||||||||
Publisher: | MDPI | |||||||||
ISSN: | 2313-0105 | |||||||||
Official Date: | 31 August 2023 | |||||||||
Dates: |
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Volume: | 9 | |||||||||
Number: | 9 | |||||||||
Article Number: | 446 | |||||||||
DOI: | 10.3390/batteries9090446 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 14 November 2023 | |||||||||
Date of first compliant Open Access: | 14 November 2023 | |||||||||
RIOXX Funder/Project Grant: |
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