Sodium-embedded cobalt-manganese composite oxide and sodium-embedded lithium ion battery positive electrode material

The invention relates to a sodium-embedded cobalt-manganese composite oxide and a sodium-embedded lithium ion battery positive electrode material. A preparation method comprises the following steps: S1, obtaining a cobalt-manganese metal compound precursor; s2, adding the precursor in S1, a sodium m...

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Bibliographische Detailangaben
Hauptverfasser:	LIN YUSHU, HONG LIXUN, WEI GUOZHEN, MA YUEFEI, ZENG LEIYING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CRYSTAL GROWTH ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The invention relates to a sodium-embedded cobalt-manganese composite oxide and a sodium-embedded lithium ion battery positive electrode material. A preparation method comprises the following steps: S1, obtaining a cobalt-manganese metal compound precursor; s2, adding the precursor in S1, a sodium metal compound, water, an additive and an oxidizing agent into a reactor for reaction; s3, the concentration of sodium ions in the reactor is controlled to be 3-12 mol/L, the reaction temperature is 20-90 DEG C, and the reaction time is 3-60 h; s4, adding a strong oxidant into a reaction material obtained in S3, and controlling reaction conditions to embed sodium ions into a cobalt-manganese composite hydroxide structure to obtain a sodium-embedded cobalt-manganese composite hydroxide; and S5, carrying out solid-liquid separation on the reaction material obtained in the step S4, collecting a solid phase, and carrying out heat treatment to obtain the sodium-embedded cobalt-manganese composite oxide. And the sodium-em