Publication number: 20240021811
Abstract: The present invention related to the technical field of sodium ion batteries, and particularly related to a mono-crystalline cathode material for sodium-ion battery and a preparation method and battery thereof. The mono-crystalline cathode material for sodium-ion battery has a chemical composition formula of Na1+aNi1?x?y?zMnxFeyMzO2, wherein ?0.40?a?0.25, 0.08?x?0.5, 0.05?y?0.5, 0?z?0.26, the M is one or a combination of two or more selected from the group consisting of Ti, Zn, Co, Mn, Al, Zr, Y, Ca, Li, Rb, Cs, W, Ce, Mo, Ba, Mg, Ta, Nb, V, Sc, Sr, B, F, P or Cu elements. The mono-crystalline cathode material for sodium-ion battery has a specific chemical composition, a mono crystal morphology and good structural stability and integrity. Particle fragmentation can not be produced in the cyclic process, and meanwhile, the cyclic stability of the sodium-ion battery can be improved.
Type:
Application
Filed:
July 17, 2023
Publication date:
January 18, 2024
Inventors:
Chaoyi ZHOU, Qianxin XIANG, Jinkai LI, Yang WU, Xingping WU