The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2024
Filed:
Aug. 17, 2023
Beijing Easpring Material Technology Co., Ltd., Beijing, CN;
Hang Zhang, Beijing, CN;
Yafei Liu, Beijing, CN;
Jingpeng Wang, Beijing, CN;
Xuequan Zhang, Beijing, CN;
Yanbin Chen, Beijing, CN;
Beijing Easpring Material Technology Co., Ltd., Beijing, CN;
Abstract
Provided is a positive electrode material for a lithium ion battery, having the following general formula I: LiNiCoMnMM′OAgeneral formula I, wherein −0.05≤a≤0.3, 0.8≤x≤1, 0≤y≤0.2, 0≤z≤0.2, 0≤c≤0.01, 0≤d≤0.01, x+y+z+c+d=1, and 0≤b≤0.05; M and M′ are different from each other and each independently selected from at least one of La, Cr, Mo, Ca, Fe, Ti, Zn, Y, Zr, W, Nb, V, Mg, B, Al, Sr, Ba and Ta, A is selected from at least one of F, Cl, Br, I and S, and the number of crystallite boundaries N in primary particles of the positive electrode material is from 10.5 to 14.5, wherein N is calculated according to Equation I: N=D/DEquation I, wherein Dis an average size of the primary particles, as measured from scanning electron microscope (SEM) image of cross section of the positive electrode material, and Dis an average size of crystallites in the primary particles of the positive electrode material, as measured by an XRD test and calculated by the Scherrer equation. Also provided is a method for preparing the positive electrode material.