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:
Feb. 08, 2022
Filed:
Dec. 09, 2016
Nec Energy Devices, Ltd., Sagamihara, JP;
Masaaki Matsuu, Sagamihara, JP;
Ai Fujisawa, Sagamihara, JP;
Envision AESC Japan Ltd., Zama, JP;
Abstract
Provided is a positive electrode mixture for a secondary battery, the positive electrode mixture allowing provision of a secondary battery that exhibits a high capacity maintenance rate in a charge-discharge cycle. The positive electrode mixture for a secondary battery comprises a positive electrode active material, a binder, and an organic acid, wherein the positive electrode active material comprises a lithium nickel complex oxide having a layered crystal structure, the binder comprises a vinylidene fluoride-based polymer, and when a solution prepared by suspending the positive electrode active material in pure water has a pH of A, and the content of the organic acid per 100 parts by mass of the positive electrode active material is B parts by mass, A and B satisfy the following expression (1).30×+5≤≤30×+10  (1)