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Sodium vanadate nanowires @ polypyrrole with synergetic core-shell structure for enhanced reversible sodium-ion storage.
- Source :
-
Composites Science & Technology . Dec2016, Vol. 137, p130-137. 8p. - Publication Year :
- 2016
-
Abstract
- Use of hybridized transition-metal oxides nanostructures with a shell coating show promise for improving the electrochemical performance of sodium-ion batteries. Herein, a novel type of designed sodium vanadate @ polypyrrole (Na 5 V 12 O 32 @PPy) nanocomposites with a synergetic core-shell structure was fabricated using sequential hydrothermal and electrodeposition methods. When the Na 5 V 12 O 32 @PPy nanocomposites were employed as a cathode, the assembled sodium-ion batteries exhibited a high reversible discharge capacity of 213 mAh g −1 at a current density of 30 mA g −1 , high rate performance (133 mAh g −1 at 480 mA g −1 ) and superior cycling performance (202 mAh g −1 at 100 mA g −1 after 100 cycles with a capacity retention of 94%). By contrast, the cycling behavior of this novel material proved to be much better than the naked Na 5 V 12 O 32 nanowires. This research provides a new pathway to explore cathode materials for sodium-ion battery with enhanced electrochemical performance. [ABSTRACT FROM AUTHOR]
- Subjects :
- *VANADATES
*NANOWIRES
*POLYPYRROLE
*SYNERGETICS
*SODIUM ions
Subjects
Details
- Language :
- English
- ISSN :
- 02663538
- Volume :
- 137
- Database :
- Academic Search Index
- Journal :
- Composites Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 119583542
- Full Text :
- https://doi.org/10.1016/j.compscitech.2016.10.032