Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries
The effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical measurements. F-doping...
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MDPI AG
2018-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/11/11/2206 |
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doaj-001d47c9071b4f8bb768ad69142ecd9d2020-11-24T21:47:17ZengMDPI AGMaterials1996-19442018-11-011111220610.3390/ma11112206ma11112206Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion BatteriesZehua Chen0Liang Lu1Yu Gao2Qixiang Zhang3Chuanxiang Zhang4Chunwen Sun5Xingying Chen6College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 54000, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 54000, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 54000, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 54000, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 54000, ChinaCAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, ChinaMedical College, Henan Polytechnic University, Jiaozuo 454000, ChinaThe effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> 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<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> exhibits a 30% increase with F-doping owing to the improved sodium ion diffusion coefficient. F-doped Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> also displays an enhanced rate capability and favourable cycling performance for more than 800 cycles.https://www.mdpi.com/1996-1944/11/11/2206sodium-ion batteriesNa<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub>F-dopingelectronic conductivity |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Zehua Chen Liang Lu Yu Gao Qixiang Zhang Chuanxiang Zhang Chunwen Sun Xingying Chen |
| spellingShingle |
Zehua Chen Liang Lu Yu Gao Qixiang Zhang Chuanxiang Zhang Chunwen Sun Xingying Chen Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries Materials sodium-ion batteries Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> F-doping electronic conductivity |
| author_facet |
Zehua Chen Liang Lu Yu Gao Qixiang Zhang Chuanxiang Zhang Chunwen Sun Xingying Chen |
| author_sort |
Zehua Chen |
| title |
Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries |
| title_short |
Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries |
| title_full |
Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries |
| title_fullStr |
Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries |
| title_full_unstemmed |
Effects of F-Doping on the Electrochemical Performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> as an Anode for Sodium-Ion Batteries |
| title_sort |
effects of f-doping on the electrochemical performance of na<sub>2</sub>ti<sub>3</sub>o<sub>7</sub> as an anode for sodium-ion batteries |
| publisher |
MDPI AG |
| series |
Materials |
| issn |
1996-1944 |
| publishDate |
2018-11-01 |
| description |
The effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> 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<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> exhibits a 30% increase with F-doping owing to the improved sodium ion diffusion coefficient. F-doped Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> also displays an enhanced rate capability and favourable cycling performance for more than 800 cycles. |
| topic |
sodium-ion batteries Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> F-doping electronic conductivity |
| url |
https://www.mdpi.com/1996-1944/11/11/2206 |
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