TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials
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 (SiNP...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/7/1144 |
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| author | Jinbao Li Sha Fan Huijuan Xiu Haiwei Wu Shaoyan Huang Simin Wang Dingwen Yin Zili Deng Chuanyin Xiong |
| author_facet | Jinbao Li Sha Fan Huijuan Xiu Haiwei Wu Shaoyan Huang Simin Wang Dingwen Yin Zili Deng Chuanyin Xiong |
| author_sort | Jinbao Li |
| collection | DOAJ |
| description | 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<sub>2</sub>) 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<sub>2</sub>/AgNWs composite as an anode material for high-efficiency Li-ion batteries. Compared with the pure SiNPs electrode, the SiNPs@TiO<sub>2</sub>/AgNWs electrode exhibits excellent electrochemical performance with a first discharge specific capacity of 3524.2 mAh·g<sup>−1</sup> at a current density of 400 mA·g<sup>−1</sup>, which provides a new idea for the preparation of silicon-based anode materials for high-performance lithium-ion batteries. |
| first_indexed | 2024-03-11T05:28:40Z |
| format | Article |
| id | doaj.art-54b379185dc745c9b6489ba743344d78 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T05:28:40Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-54b379185dc745c9b6489ba743344d782023-11-17T17:16:20ZengMDPI AGNanomaterials2079-49912023-03-01137114410.3390/nano13071144TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode MaterialsJinbao Li0Sha Fan1Huijuan Xiu2Haiwei Wu3Shaoyan Huang4Simin Wang5Dingwen Yin6Zili Deng7Chuanyin Xiong8College of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaSilicon-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<sub>2</sub>) 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<sub>2</sub>/AgNWs composite as an anode material for high-efficiency Li-ion batteries. Compared with the pure SiNPs electrode, the SiNPs@TiO<sub>2</sub>/AgNWs electrode exhibits excellent electrochemical performance with a first discharge specific capacity of 3524.2 mAh·g<sup>−1</sup> at a current density of 400 mA·g<sup>−1</sup>, which provides a new idea for the preparation of silicon-based anode materials for high-performance lithium-ion batteries.https://www.mdpi.com/2079-4991/13/7/1144lithium-ion batteriessilicon-based anode materialsSiNPs@TiO<sub>2</sub> core-shell structureAgNWs doping |
| spellingShingle | Jinbao Li Sha Fan Huijuan Xiu Haiwei Wu Shaoyan Huang Simin Wang Dingwen Yin Zili Deng Chuanyin Xiong TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials Nanomaterials lithium-ion batteries silicon-based anode materials SiNPs@TiO<sub>2</sub> core-shell structure AgNWs doping |
| title | TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials |
| title_full | TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials |
| title_fullStr | TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials |
| title_full_unstemmed | TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials |
| title_short | TiO<sub>2</sub>-Coated Silicon Nanoparticle Core-Shell Structure for High-Capacity Lithium-Ion Battery Anode Materials |
| title_sort | tio sub 2 sub coated silicon nanoparticle core shell structure for high capacity lithium ion battery anode materials |
| topic | lithium-ion batteries silicon-based anode materials SiNPs@TiO<sub>2</sub> core-shell structure AgNWs doping |
| url | https://www.mdpi.com/2079-4991/13/7/1144 |
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