Exploration of AVP2O7/C (A = Li, Li0.5Na0.5, and Na) for High-Rate Sodium-Ion Battery Applications
| Autor: | Nallathamby Kalaiselvi, Mani Vellaisamy, M. V. Reddy, B. V. R. Chowdari |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Sodium Inorganic chemistry Intercalation (chemistry) Sodium-ion battery chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode General Energy chemistry Lithium Physical and Theoretical Chemistry 0210 nano-technology Faraday efficiency Monoclinic crystal system |
| Zdroj: | The Journal of Physical Chemistry C. 122:24609-24618 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.8b09451 |
| Popis: | In this article, we demonstrate the electrochemical activity of AVP2O7/C (A = Li, Li0.5Na0.5, and Na) prepared by a scalable and easy-to-adopt oxalic dihydrazide assisted solution combustion method for application in sodium-ion batteries (SIBs). A series of compounds thus prepared are found to possess a monoclinic structure consisting of a three-dimensional porous network and sufficient void volume to facilitate facile intercalation/deintercalation of sodium ions. However, among the corresponding composites obtained with Super P carbon, the lithium analog, viz., LiVP2O7/C, demonstrates better electrochemical performance than the rest of the compositions, viz., Li0.5Na0.5VP2O7/C and NaVP2O7/C, when explored as anode in SIBs. In other words, LiVP2O7/C anode exhibits a stable reversible capacity of 125 mA h g–1 at 1 C rate (115 mA g–1) up to 100 cycles. Further, at 1 C rate condition, an acceptable capacity of 90 mA h g–1 has been observed up to 1000 cycles with a Coulombic efficiency of 99%, which is notewo... |
| Databáze: | OpenAIRE |
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