Perovskite type composite oxide coated lithium ferrite lithium supplement agent and preparation method thereof

• Main Authors: WANG YIFEI, XIA LINGFENG, SHIN YOUNG KWAN, ZHUANG HUAJIE
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• 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 discloses a perovskite type composite oxide coated lithium ferrite lithium supplement agent and a preparation method thereof, and belongs to the technical field of lithium ion battery lithium supplement materials. The perovskite type composite oxide coated lithium ferrite lithium supplement agent comprises matrix particles and a coating coated on the surfaces of the matrix particles, the matrix particles are lithium ferrite; the coating is a perovskite type composite oxide, the chemical formula of the perovskite type composite oxide is LaNixCo (1-x) O (3-y), x is more than 0 and less than 1, and y is more than or equal to 0 and less than 1. The perovskite type composite oxide coated on the outer layer of the matrix lithium ferrite can effectively isolate air and improve the air stability of the material on one hand, and can enhance the conductivity of the material on the other hand. The surface of the lithium ferrite is coated with the perovskite type composite oxide, so that the lithium supplem