Spray-drying synthesis of Na2FePO4F/carbon powders for lithium-ion batteries
| Autor: | Natacha Krins, Magali Brisbois, Bénédicte Vertruyen, Raphaël P. Hermann, Frédéric Boschini, Rudi Cloots, Audrey Schrijnemakers |
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| Rok vydání: | 2014 |
| Předmět: |
Aqueous solution
Materials science Argon Mechanical Engineering Sodium Metallurgy chemistry.chemical_element Condensed Matter Physics chemistry.chemical_compound chemistry Mechanics of Materials Spray drying Mössbauer spectroscopy General Materials Science Lithium Citric acid Carbon Nuclear chemistry |
| Zdroj: | Materials Letters. 130:263-266 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2014.05.121 |
| Popis: | Sodium iron fluorophosphate Na2FePO4F is a candidate positive electrode material for both lithium-ion batteries and sodium-ion batteries. We report the synthesis of Na2FePO4F/carbon powders by the simple and easily up-scalable technique of spray-drying. An aqueous solution containing citric acid as a carbon source was sprayed in a pilot-scale spray-dryer. Heat treatment at 600 °C in argon for 12 h was found appropriate to obtain single-phase Na2FePO4F; only 1.8% of Fe (III) was detected by iron-57 Mossbauer spectroscopy. When cycled against lithium, the discharge capacity reached 110 mA h/g at C/15 rate. |
| Databáze: | OpenAIRE |
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