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AuthorMerabet, Hocine
AuthorDe Luna, Yannis
AuthorMohamed, Khadiga
AuthorBensalah, Nasr
Available date2022-12-11T04:18:58Z
Publication Date2021-06-01
Publication NameMaterials
Identifierhttp://dx.doi.org/10.3390/ma14112824
CitationMerabet, H., De Luna, Y., Mohamed, K., & Bensalah, N. (2021). Fabrication of Si3N4@ Si@ Cu thin films by RF sputtering as high energy anode material for Li-ion batteries. Materials, 14(11), 2824.
ISSN1996-1944
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85107459616&origin=inward
URIhttp://hdl.handle.net/10576/37121
AbstractSilicon and silicon nitride (Si3N4 ) are some of the most appealing candidates as anode materials for LIBs (Li-ion battery) due to their favorable characteristics: low cost, abundance of Si, and high theoretical capacity. However, these materials have their own set of challenges that need to be addressed for practical applications. A thin film consisting of silicon nitride-coated silicon on a copper current collector (Si3N4@Si@Cu) has been prepared in this work via RF magnetron sputtering (Radio Frequency magnetron sputtering). The anode material was characterized before and after cycling to assess the difference in appearance and composition using XRD (X-ray Powder Diffraction), XPS (X-ray Photoelectron Spectroscopy), SEM/EDX (Scanning Electron Microscopy/ Energy Dispersive X-Ray Analysis), and TEM (Transmission Electron Microscopy). The effect of the silicon nitride coating on the electrochemical performance of the anode material for LIBs was evaluated against Si@Cu film. It has been found that the Si3N4@Si@Cu anode achieved a higher capacity retention (90%) compared to Si@Cu (20%) after 50 cycles in a half-cell versus Li+/Li, indicating a significant improvement in electrochemical performance. In a full cell, the Si3N4@Si@Cu anode achieved excellent efficiency and acceptable specific capacities, which can be enhanced with further research.
SponsorQatar University collaborative grant No. QUCG-CAS-20/21-4. Qatar National Research Fund (QNRF) grant No. for NPRP8-1467-1-268
Languageen
PublisherMDPI
SubjectLi-ion batteries
Performance
RF sputtering
Silicon-based anode
Thin film
TitleFabrication of Si3n4@si@cu thin films by RF sputtering as high energy anode material for Li-ion batteries
TypeArticle
Issue Number11
Volume Number14
ESSN1996-1944
dc.accessType Open Access


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