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. 18, 2020
Filed:
Jun. 18, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Ryo Hanazaki, Toyota, JP;
Keiichi Takahashi, Nishinomiya, JP;
Naoyuki Wada, Hirakata, JP;
Yukihiro Okada, Shijyonawate, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A lithium ion secondary battery includes at least a positive electrode, a negative electrode, and an electrolyte. The positive electrode contains at least a first positive electrode active material and a second positive electrode active material. The first positive electrode active material is expressed with a formula (I) LiNiCoMnOand the second positive electrode active material is expressed with a formula (II) LiNiCoMnO, where a, b, c, d, e, and f satisfy conditions of a>d, 0.4≤a≤0.6, 0.2≤b≤0.5, 0.1≤c≤0.2, a+b+c=1.0, 0.2≤d≤0.5, 0.1≤e≤0.2, 0.4≤f≤0.6, and d+e+f=1.