Co2B2O5 as an anode material with high capacity for sodium ion batteries
| Autor: | Baofeng Wang, Ping Qiushi, Haoli Wang, Xikai Wu, Baozhu Wu, Xu Beibei, Han Chen, Qiangqiang Zhuang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
020502 materials Sodium Composite number Kinetic analysis Metals and Alloys chemistry.chemical_element High capacity 02 engineering and technology Carbon nanotube Condensed Matter Physics Anode law.invention 0205 materials engineering chemistry Chemical engineering law Metallic materials Materials Chemistry Physical and Theoretical Chemistry Current density |
| Zdroj: | Rare Metals. 39:1045-1052 |
| ISSN: | 1867-7185 1001-0521 |
| Popis: | In this work, a flake-structured Co2B2O5 material was obtained by a simple sol–gel method and researched for use in sodium ion batteries firstly. When serving as anode material for sodium ion batteries, it exhibits the high initial reversible capacity of 466 mAh·g−1 at a current density of 100 mA·g−1. Through the recombination of carbon nanotubes (CNTs), the composite Co2B2O5/CNTs delivers the initial reversible capacity of 464 mAh·g−1, and 324 mAh·g−1 is obtained after 60 cycles under the current density of 100 mA·g−1. When under the current density of 1000 mA·g−1, a capacity of 236 mAh·g−1 is obtained for Co2B2O5/CNTs while 160 mAh·g−1 for Co2B2O5. Moreover, the sodium storage behavior of Co2B2O5 is identified by kinetic analysis. The higher Na+ capacitive contribution of Co2B2O5/CNTs could account for the enhanced rate performance. The results indicate that Co2B2O5 is a promising anode material for sodium ion batteries. |
| Databáze: | OpenAIRE |
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