US 12,215,040 B2
Lithium nickel manganese oxide composite material, preparation method thereof and lithium ion battery
Jiali Ma, Jiangsu (CN); Hongxin Yang, Jiangsu (CN); Weijun Jiang, Jiangsu (CN); Qiqi Qiao, Jiangsu (CN); Mingzhu Sun, Jiangsu (CN); Xinpei Xu, Jiangsu (CN); Zetao Shi, Jiangsu (CN); Pengfei Wang, Jiangsu (CN); and Sixian Chen, Jiangsu (CN)
Assigned to SVOLT ENERGY TECHNOLOGY CO., LTD., Jiangsu (CN)
Appl. No. 17/641,820
Filed by SVOLT ENERGY TECHNOLOGY CO., LTD., Jiangsu (CN)
PCT Filed Oct. 28, 2020, PCT No. PCT/CN2020/124465
§ 371(c)(1), (2) Date Mar. 10, 2022,
PCT Pub. No. WO2021/238050, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 202010450693.X (CN), filed on May 25, 2020.
Prior Publication US 2023/0079339 A1, Mar. 16, 2023
Int. Cl. C01G 53/00 (2006.01)
CPC C01G 53/50 (2013.01) [C01P 2004/03 (2013.01); C01P 2006/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A preparation method for a lithium nickel manganese oxide composite material, the preparation method comprises:
performing a first calcining process on a nano-oxide and a nickel-manganese precursor, to obtain an oxide-coated nickel-manganese precursor; wherein the nickel-manganese precursor is represented by NixMny(OH)2, 0.50≤x≤0.92, 0.50≤y≤0.8; the nano-oxide is selected from two or more in a group consisting of an aluminum oxide, a zirconium oxide, a titanium oxide, a niobium oxide, a tungsten oxide, a lanthanum oxide and a molybdenum oxide; and
performing a second calcining process on the oxide-coated nickel-manganese precursor and a lithium source material, to obtain the lithium nickel manganese oxide composite material, and a temperature of the first calcining process is lower than a temperature of the second calcining process.