High-entropy sodium battery positive electrode precursor as well as preparation method and application thereof

• Main Authors: XU KAIHUA, LI CONG, GONG ZHENGJIE, HUA WENCHAO, XIANG XING, ZHANG KUN
• Format: Patent
• Language: Chinese; English
• Published: 14.06.2024
• Subjects: 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

The invention provides a high-entropy sodium battery positive electrode precursor and a preparation method and application thereof, and the preparation method comprises the following steps: (1) mixing a nickel source, an iron source, a manganese source, a doped metal source and a solvent to obtain a mixed metal salt solution; and (2) atomizing the mixed metal salt solution, and carrying out three-section heating pyrolysis treatment to obtain the high-entropy sodium battery positive electrode precursor. According to the invention, precursor particles with good dispersibility, uniform particle size distribution and good sphericity are prepared by a spray pyrolysis method of three-stage heating pyrolysis treatment, and the positive electrode material prepared from the precursor has good cycle stability and high energy density under a high voltage condition. 本发明提供了一种高熵钠电正极前驱体及其制备方法和应用，所述制备方法包括以下步骤：(1)将镍源、铁源、锰源、掺杂金属源与溶剂混合，得到混合金属盐溶液；(2)将所述混合金属盐溶液雾化后，进行三段升温热解处理，得到所述高熵钠电正极前驱体。本发明通过三段升温热解处理的喷雾热解方法，制得一种分散性好，粒径分布均匀，球形度也