Publication number: 20240079579
Abstract: A positive active material, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The positive active material includes a spinel-type lithium-manganese-containing composite oxide with a molecular formula of Li1+xAaMbXcMn2?a?b?c?xO4?t. In the molecular formula: A is a doping element for a manganese site of the spinel-type lithium-manganese-containing composite oxide; M is used for combining with O to form a second phase containing a polyoxyanion, and M includes one or more of B, C, N, Si, P, S, or Cl; X includes one or more of Mg, Al, Si, Ca, Sc, Ti, Cr, Fe, Co, Ni, Cu, Zn, or Zr; and the molecular formula satisfies: ?0.1?x?0.3, 0<a?0.2, 0<b?0.2, 0<c?0.7, and 0?t?0.2.
Type:
Application
Filed:
November 14, 2023
Publication date:
March 7, 2024
Applicant:
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventors:
Zhenguo ZHANG, Xingkai HU, Xiang YIN, Jingpeng FAN, Sihui WANG, Zhijie YAO, Na LIU