PRECURSOR DE MATERIAL DE CATODO Y METODO DE PREPARACION Y APLICACION DEL MISMO

• Main Authors: WANG, Qian, LIU, Jingjing, RUAN, Dingshan, LI, Changdong
• Format: Patent
• Language: Spanish
• Published: 18.03.2024
• 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 relates to the field of battery materials, and discloses a cathode material precursor and a preparation method and application thereof. The chemical formula of the cathode material precursor is NixCoyMnz(OH)2, wherein 0.2≤x≤1, 0≤y≤0.5, 0≤z≤0.6, and 0.8≤x+y+z≤1. The cathode material precursor is in a shape of a stack of lamellae, and has a particle size broadening factor K, where K≤0.85. In the invention, the preparation process of the precursor is effectively controlled and adjusted by the controlled crystallization method combined with Lamer nucleation and growth theoretical model. The prepared precursor has morphology characteristics of concentrated particle size distribution and high proportion of {010} active crystal plane family, and has capacity retention up to 91.33% at a rate of 20C.