Synthesis and characterization of GaNb11O29@C for high-performance lithium-ion battery
| Autor: | Wenchao Bi, Miao Shui, Jundong Zhang, Yuhang Li, Zhen Wang, Haoxiang Yu, Runtian Zheng, Xikun Zhang, Jie Shu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science Process Chemistry and Technology 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Lithium-ion battery Surfaces Coatings and Films Electronic Optical and Magnetic Materials Characterization (materials science) Ion Anode Crystal Chemical engineering Electrical resistivity and conductivity 0103 physical sciences Materials Chemistry Ceramics and Composites 0210 nano-technology |
| Zdroj: | Ceramics International. 46:5913-5919 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.11.044 |
| Popis: | The GaNb11O29 shows an open Wadsley-Roth shear structure, which is of great benefit to store ions in rechargeable batteries. In this work, we successfully synthesize GaNb11O29@C via a simple solid-state reaction method combined with carbon-coating modification. As anode for LIBs, the as-synthesized GaNb11O29@C sample exhibits wonderful electrochemical behaviors. It exhibits high reversible capacity (227.3 mA h g−1), outstanding rate capability (58.91% retention at 700 mA g−1) and excellent long cycle performance (0.036% capacity decay per cycle). The enhancement of diffusion kinetics and rate performance assigns to the increased surface reaction activity and electrical conductivity. The open and stable crystal framework structure guarantees rapid lithium-ion migration, excellent rate performance and long cycle performance. These results tell that GaNb11O29@C is promising anode material for the application in advanced LIBs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect