Method for improving performance of nickel-cobalt-aluminum-lithium oxide for lithium ion power battery

• Main Authors: XU NING, ZHAO MING, FU PINGPING, SONG YINGJIE, WU MENGTAO
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a method for improving the performance of nickel-cobalt-aluminum-lithium oxide for a lithium ion power battery. According to the method, an organic titanate is adopted as a titanium source, the surface of nickel-cobalt-aluminum-lithium oxide is clad with titanium dioxide by virtue of liquid-phase chemical deposition, and then the cladding layer is partially nitrided to form a Ti-O-N cladding layer on the surface of nickel-cobalt-aluminum-lithium oxide. The cladding layer can be well bonded with nickel-cobalt-aluminum-lithium oxide; the direct contact between an active substance and an electrolyte is reduced, the electron conductivity between material particles can be improved, and the performance of the material can be improved.