Preparation method of negative electrode material of organic system sodium-ion battery

The invention belongs to the technical field of negative electrode materials of batteries, and in particular relates to a preparation method of a negative electrode material of an organic system sodium-ion battery. The negative electrode material is carbon coated NaTi2(PO4)3, and the preparation met...

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Bibliographische Detailangaben
Hauptverfasser:	HUANG YUNHUI, WANG ZHENG, MAI LIQIANG, SUN MIAO, DENG YAOMING, ZHANG JIALING, SONG XIAONA, ZHAO FUSHUANG, ZHOU XUNFU, LIU JICE, WANG GUOXIU, PANG PEIPEI, SHI HAIMIN, CHOU SHULEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The invention belongs to the technical field of negative electrode materials of batteries, and in particular relates to a preparation method of a negative electrode material of an organic system sodium-ion battery. The negative electrode material is carbon coated NaTi2(PO4)3, and the preparation method includes ball-milling, drying and grinding CH3COONa.3H2O, TiO2 and (NH4)2HPO4 according to the molar ratio of (1.01-1.5):2:3 with acetone, and calcining at 450-550 DEG C in the air; and ball-milling powder obtained after calcination with a carbon source, and calcining at 800-950 DEG C under protective atmosphere to obtain carbon coated NaTi2(PO4)3. Compared with the prior art, the NaTi2(PO4)3@C material with a core-shell structure is prepared through a ball milling-calcining method. The structure can improve structural stability of the NaTi2(PO4)3 material, enhance electric conductivity of the NaTi2(PO4)3 material, be favorable for increasing sodium storage specific capacity of the NaTi2(PO4)3 material, and be