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:
Aug. 11, 2026
Filed:
Jun. 18, 2025
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Liang Yun, Ningde, CN;
Xin Sun, Ningde, CN;
Xingbu Chen, Ningde, CN;
Xuan Li, Ningde, CN;
Lili Wu, Ningde, CN;
Peidong Song, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde, CN;
Abstract
Provided in the present application are a positive electrode active material, a preparation method, a positive electrode sheet, a secondary battery, and an electric device. The positive electrode active material has the following general formula: LiNiM1MnM2O, where M1 and M2 each independently include one or a plurality of Co, Al, B, Zr, Sr, Y, Sb, W, Ti, Mg, or Nb, 0.8≤a≤1.2, 0.55≤x<1, 0<y≤0.25, and 0≤z≤0.2, the positive electrode active material is present in a form of secondary particles formed by aggregation of primary particles, the secondary particles include secondary pores formed by spaces between the primary particles, and the secondary pores have an inner diameter of 0.1 μm to 2 μm.