Double-layer coated sodium ion positive electrode material precursor and preparation method and application thereof

According to the double-layer coated sodium ion positive electrode material precursor and the preparation method and application thereof, the double-layer coated sodium ion positive electrode material precursor is prepared through step-by-step coprecipitation, stable double coating layers can be con...

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Bibliographische Detailangaben
Hauptverfasser:	XUE XIAOFEI, XU KAIHUA, LI CONG, ZHANG KUN, JIA DONGMING, YIN DAODAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:	According to the double-layer coated sodium ion positive electrode material precursor and the preparation method and application thereof, the double-layer coated sodium ion positive electrode material precursor is prepared through step-by-step coprecipitation, stable double coating layers can be constructed, the capacity and voltage of the positive electrode material are improved through the inner coating layer, the conductivity is improved through the outer coating layer, and the performance of the positive electrode material is improved. The electrochemical performance of the positive electrode material is improved through the synergistic effect of the inner coating layer and the outer coating layer, the preparation and development of the high-performance sodium ion battery positive electrode material are facilitated, sodium ions can be promoted to migrate into the structure in the process of mixing with a sodium source and calcining, and the transmission path of the sodium ions is reduced; the preparation