Reorganizing electronic structure of Li3V2(PO4)3 using polyanion (BO3)3− : towards better electrochemical performances
| العنوان: | Reorganizing electronic structure of Li3V2(PO4)3 using polyanion (BO3)3− : towards better electrochemical performances |
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| المؤلفون: | Feng Wu, Chuan Wu, Yu Li, Ying Bai, Zhi Yang, Shi Chen, Zhaohua Wang |
| المصدر: | Rare Metals. 36:397-402 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Materials science, Scanning electron microscope, Doping, Metals and Alloys, Analytical chemistry, 02 engineering and technology, Crystal structure, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Electrochemistry, 01 natural sciences, Cathode, 0104 chemical sciences, law.invention, Dielectric spectroscopy, law, Materials Chemistry, Physical and Theoretical Chemistry, Cyclic voltammetry, 0210 nano-technology, Monoclinic crystal system |
| الوصف: | Doping modification of electrode materials is a sought-after strategy to improve their electrochemical performance in the secondary batteries field. Herein, polyanion (BO3)3−-doped Li3V2(PO4)3 cathode materials were successfully synthesized via a wet coordination method. The effects of (BO3)3− doping content on crystal structure, morphology and electrochemical performance were explored by X-ray diffraction (XRD), scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). All the as-prepared samples have the same monoclinic structure; among them, Li3V2(PO4)2.75(BO3)0.15 sample has relatively uniform and optimized particle size. In addition, this sample has the highest discharge capacity and the best cycling stability, with an initial discharge capacity of 120.4 mAh·g−1, and after 30 cycles at a rate of 0.1C, the discharge capacity still remains 119.3 mAh·g−1. It is confirmed that moderate polyanion (BO3)3− doping can rearrange the electronic structure of the bulk Li3V2(PO4)3, lower the charge transfer resistance and further improve the electrochemical behaviors. |
| تدمد: | 1867-7185 1001-0521 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::3d9cdf462be4fac2a78ba4ff4f707cf3Test https://doi.org/10.1007/s12598-017-0892-yTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........3d9cdf462be4fac2a78ba4ff4f707cf3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18677185 10010521 |
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