Facile synthesis and lithium storage performance of (NH4)2V3O8 nanoflakes
| Autor: | Dan Sun, Ruihong Liu, Hao Wan, Guoqing Xu, Hanna He, Xianguang Zeng, Haiyan Wang, Xiaobing Huang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
General Chemical Engineering Intercalation (chemistry) chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Hydrothermal circulation 0104 chemical sciences chemistry Chemical engineering Electrode Materials Chemistry Lithium 0210 nano-technology Capacity loss Current density Faraday efficiency |
| Zdroj: | Journal of Applied Electrochemistry. 46:879-885 |
| ISSN: | 1572-8838 0021-891X |
| Popis: | Single-crystalline (NH4)2V3O8 nanoflakes were successfully synthesized by a facile hydrothermal method. We investigated their electrochemical performance for use in lithium ion batteries for the first time. Interestingly, the as-prepared (NH4)2V3O8 electrode demonstrated good lithium storage properties. This material exhibited a high initial discharge capacity of 261.4 mAh g−1 at a current density of 150 mA g−1. Apart from the capacity loss in the first two cycles, the discharge capacity remained relatively stable and a capacity of 215.8 mAh g−1 was maintained after 30 cycles, indicating good cycling stability. The Coulombic efficiency was close to 100 % during the cycling, revealing that the intercalation/deintercalation of Li ions in this material was highly reversible. The good electrochemical performance of (NH4)2V3O8 was mainly attributed to its flake-like morphology and intrinsically stable layered structure. |
| Databáze: | OpenAIRE |
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