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:
Jul. 25, 2017
Filed:
Dec. 26, 2014
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, Aichi, JP;
Tatsuya Eguchi, Kariya, JP;
Takeshi Maki, Kariya, JP;
Manabu Miyoshi, Kariya, JP;
Yuuhi Sato, Kariya, JP;
Jun Kaneda, Kariya, JP;
Yusuke Yamamoto, Kariya, JP;
Takahiro Sugioka, Kariya, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya-shi, Aichi, JP;
Abstract
A parameter for producing a positive electrode having excellent safety, and a positive electrode active material layer satisfying the parameter. The positive electrode active material layer includes a first positive electrode active material, a second positive electrode active material having a lower charge/discharge potential than the first positive electrode active material, and an additive. When the first positive electrode active material tap density is defined as dt, the second positive electrode active material tap density is defined as dt, a true density of the additive is defined as d, a mass percentage of the first positive electrode active material is defined as Wt, a mass percentage of the second positive electrode active material is defined as Wt, a mass percentage of the additive is defined as Wt, and a porosity of the positive electrode active material layer is defined as p, the positive electrode active material layer satisfies (1−p)×(Wt/dt)/((Wt/dt)+(Wt/dt)+(Wt/d))<0.38.