Copper-ion-doped nickel-iron-manganese-based ternary precursor, preparation method and application of copper-ion-doped nickel-iron-manganese-based ternary precursor

The invention discloses a copper ion doped nickel-iron-manganese-based ternary precursor as well as a preparation method and application thereof. Belongs to the field of sodium-ion battery cathode materials. The chemical formula of the ternary precursor is Ni < x > Cu < y > Fe < 0.33...

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Hauptverfasser: NIE YAJING, GAO ZHIQIANG, LI XIN, WU RUFENG, TANG YAODONG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a copper ion doped nickel-iron-manganese-based ternary precursor as well as a preparation method and application thereof. Belongs to the field of sodium-ion battery cathode materials. The chemical formula of the ternary precursor is Ni < x > Cu < y > Fe < 0.33 > Mn < 0.33 > (OH) < 2 >, x + y = 0.33, and y is greater than or equal to 0.05 and less than or equal to 0.11; the preparation method comprises the following steps: 1) dispersing a copper salt and a nickel-iron-manganese transition metal salt in deionized water, and continuously stirring to uniformly disperse the copper salt and the nickel-iron-manganese transition metal salt; 2) adding an ammonia water solution and a sodium hydroxide solution with a certain concentration into the solution obtained in the step 1) while stirring, adjusting the pH value of the solution to 11.5, continuously heating to 40-60 DEG C, and continuously stirring until the reaction is completed; 3) centrifuging with ethanol and deionized water, washing an