A fluorine-doped carbon-coated sodium vanadium fluorophosphate material, a preparation method and application thereof
By coating Na3V2(PO4)2F3 material with fluorine-doped carbon, the problems of poor electronic conductivity and rate performance of sodium-ion battery cathode materials have been solved, achieving high conductivity and long cycle stability, making it suitable for industrial production.
CN122403409APending Publication Date: 2026-07-17KUNMING UNIV OF SCI & TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- KUNMING UNIV OF SCI & TECH
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
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Figure CN122403409A_ABST
Abstract
本发明属于钠离子电池正极材料制备领域，具体涉及了一种氟掺杂碳包覆的氟磷酸钒钠材料及制备方法、应用。所述方法包括：将含钒化合物、含磷化合物、氟化钠、还原剂和溶剂混合均匀，得到中间溶液；将中间溶液热处理，过滤，干燥，得到氟磷酸钒钠前驱体；将氟磷酸钒钠前驱体与含氟和碳的有机物混合，随后在惰性气氛中进行烧结处理，得到所述氟磷酸钒钠正极材料；应用包括作为钠离子电池正极材料。本发明过氟掺杂碳的原位包覆和氟的补充，大大提高了复合材料的电子电导率和结构稳定性，同时补充碳有利于电解的效率，从而提高钠离子的扩散速率，在钠离子电池中具有较好的应用前景。
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