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TiO 2 -Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials.
- Source :
- Nanomaterials (2079-4991); Apr2023, Vol. 13 Issue 7, p1144, 11p
- Publication Year :
- 2023
-
Abstract
- Silicon-based anode materials are considered one of the highly promising anode materials due to their high theoretical energy density; however, problems such as volume effects and solid electrolyte interface film (SEI) instability limit the practical applications. Herein, silicon nanoparticles (SiNPs) are used as the nucleus and anatase titanium dioxide (TiO<subscript>2</subscript>) is used as the buffer layer to form a core-shell structure to adapt to the volume change of the silicon-based material and improve the overall interfacial stability of the electrode. In addition, silver nanowires (AgNWs) doping makes it possible to form a conductive network structure to improve the conductivity of the material. We used the core-shell structure SiNPs@TiO<subscript>2</subscript>/AgNWs composite as an anode material for high-efficiency Li-ion batteries. Compared with the pure SiNPs electrode, the SiNPs@TiO<subscript>2</subscript>/AgNWs electrode exhibits excellent electrochemical performance with a first discharge specific capacity of 3524.2 mAh·g<superscript>−1</superscript> at a current density of 400 mA·g<superscript>−1</superscript>, which provides a new idea for the preparation of silicon-based anode materials for high-performance lithium-ion batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 13
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 163041421
- Full Text :
- https://doi.org/10.3390/nano13071144