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
Publication number: 20240021807
Abstract: The present invention relates to a mono-crystalline cathode material for sodium-ion battery and a preparation method and application thereof. The mono-crystalline cathode material for a sodium ion battery contains the chemical formula of Na1+aNi1-x-y-z-cMnxFeyMzNcO2, wherein ?0.40?a?0.25, 0.08?x?0.5, 0.05?y?0.5, 0?z<0.26, 0<c<0.1, the M and N are both 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, has 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, Lijuan WANG, Jin HUANG, Ye YU
Publication number: 20230307623
Abstract: A high-nickel cathode material for lithium ion batteries and a preparation method and application thereof. The high-nickel cathode material contains elements shown in and constituting the chemical formula 1 thereof Li1+aNibMncAdO2, where 0.01?a?0.24, 0.79<b?0.96, 0.01<c?0.20, 0<d?0.06; and A is selected from any one or two or more of Mn, Co, Al, Zr, Y, Rb, Cs, W, Ce, Mo, Ba, Ti, Mg, Ta, Nb, Ca, V, Sc, Sr and B, or from a phosphorus-containing compound containing at least one of Ti, Al, Mg, Zr, La and Li. The high-nickel cathode material of the lithium ion battery of the present invention has better cycling performance, higher capacity, and a relatively small increase in resistance during cycling of the battery.
Type:
Application
Filed:
December 28, 2022
Publication date:
September 28, 2023
Inventors:
Chaoyi ZHOU, Ye YU, Jin HUANG, Lijuan WANG, Qianxin XIANG, Lu LI, Ming MEI