Effects of F-Doping on the Electrochemical Performance of Na(2)Ti(3)O(7) as an Anode for Sodium-Ion Batteries

The effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na(2)Ti(3)O(7) are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical measurements. F-doping does not change the crystal structure of NTO, although it has a...

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Detalles Bibliográficos
Autores principales: Chen, Zehua, Lu, Liang, Gao, Yu, Zhang, Qixiang, Zhang, Chuanxiang, Sun, Chunwen, Chen, Xingying
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266345/
https://www.ncbi.nlm.nih.gov/pubmed/30405040
http://dx.doi.org/10.3390/ma11112206
Descripción
Sumario:The effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na(2)Ti(3)O(7) are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical measurements. F-doping does not change the crystal structure of NTO, although it has an effect on the morphology of the resultant product. As an anode material for sodium-ion batteries, the specific capacity of Na(2)Ti(3)O(7) exhibits a 30% increase with F-doping owing to the improved sodium ion diffusion coefficient. F-doped Na(2)Ti(3)O(7) also displays an enhanced rate capability and favourable cycling performance for more than 800 cycles.

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