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. 12, 2026
Filed:
Dec. 22, 2021
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Liting Huang, Ningde, CN;
Yongsheng Guo, Ningde, CN;
Chengdu Liang, Ningde, CN;
Jiadian Lan, Ningde, CN;
Wenguang Lin, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
This application relates to a sodium-ion battery, a positive electrode plate for a sodium-ion battery, a battery module, a battery pack, and a device. The sodium-ion battery according to this application includes a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution. The positive electrode plate includes a positive active material. A molecular formula of the positive active material satisfies NaLiMFeO, M is a transition metal ion, 0.67<a<1.1, 0<b<0.3, 0≤δ≤0.1, and a ratio of Rto Rof the positive active material satisfies 1.0<R/R<20.0. Ris a charge transfer resistance of the positive active material measured in a button battery based on alternating current impedance spectroscopy, and Ris a diffusion resistance of the positive active material measured in the button battery based on the alternating current impedance spectroscopy.