Optimising hollow-structured silicon nanoparticles for lithium-ion batteries

Yue, Chenghao, Liu, Yao, Guan, Shaoliang, Fereydooni, Alireza, Zeng, Yuexi, Wei, Zhijie, Wang, Yonggang and Chao, Yimin ORCID: https://orcid.org/0000-0002-8488-2690 (2023) Optimising hollow-structured silicon nanoparticles for lithium-ion batteries. Materials, 16 (17). ISSN 1996-1944

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Silicon has been proven to be one of the most promising anode materials for the next generation of lithium-ion batteries for application in batteries, the Si anode should have high capacity and must be industrially scalable. In this study, we designed and synthesised a hollow structure to meet these requirements. All the processes were carried out without special equipment. The Si nanoparticles that are commercially available were used as the core sealed inside a TiO2 shell, with rationally designed void space between the particles and shell. The Si@TiO2 were characterised using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The optimised hollow-structured silicon nanoparticles, when used as the anode in a lithium-ion battery, exhibited a high reversible specific capacity over 630 mAhg−1, much higher than the 370 mAhg−1 from the commercial graphite anodes. This excellent electrochemical property of the nanoparticles could be attributed to their optimised phase and unique hollow nanostructure.

Item Type: Article
Additional Information: Funding Information: The research was funded by University of East Anglia (IDF192003) and Changzhou Tonghui Solar Electricity Ltd.
Uncontrolled Keywords: anode,capacity,li-ion battery,silicon nanoparticles,tio,materials science(all),condensed matter physics,sdg 7 - affordable and clean energy ,/dk/atira/pure/subjectarea/asjc/2500
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: University of East Anglia Schools > Faculty of Science > Tyndall Centre for Climate Change Research
Faculty of Science > Research Centres > Tyndall Centre for Climate Change Research
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Depositing User: LivePure Connector
Date Deposited: 18 Oct 2023 00:42
Last Modified: 23 Oct 2023 00:40
URI: https://ueaeprints.uea.ac.uk/id/eprint/93355
DOI: 10.3390/ma16175884


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