The invention provides a porous spherical lithium manganese iron phosphate positive electrode material and a preparation method and application thereof, the porous spherical lithium manganese iron phosphate positive electrode material comprises a spherical lithium manganese iron phosphate material, and the interior of the spherical lithium manganese iron phosphate material is doped with niobium, vanadium and porous carbon; the niobium element, the vanadium element and the porous carbon are doped in the spherical lithium manganese iron phosphate material, and the three elements are coordinated and matched, so that the ionic conductivity and the electronic conductivity of the material are effectively improved, and the finally obtained porous spherical lithium manganese iron phosphate positive electrode material has excellent conductivity and processability; and the further prepared lithium ion battery has relatively high gram discharge capacity, excellent cycle performance and low-temperature performance.
本发明提供一种多孔球形磷酸锰铁锂正极材料及其制备方法和应用,所述多孔球形磷酸锰铁锂正极材料包括球形磷酸锰铁锂材料,所述球形磷酸锰铁锂材料内部掺杂有铌元素、钒元素和多孔碳;通过在所述球形磷酸锰铁锂材料内部掺杂铌元素、钒元素和多孔碳,三者协调配合,有效提高了材料的离子电导率和电子电导率,使得最终得到的多孔球形磷酸锰铁锂正极材料兼具优异的导电性能和加工性能,进一步制备得到的锂离子电池具有较高克放电克容量、优异的循环性能和低温性能。
Porous spherical lithium manganese iron phosphate positive electrode material as well as preparation method and application thereof
一种多孔球形磷酸锰铁锂正极材料及其制备方法和应用
2023-11-21
Patent
Electronic Resource
Chinese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / C01B NON-METALLIC ELEMENTS , Nichtmetallische Elemente |
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