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. 20, 2018
Filed:
Jun. 29, 2016
Hitachi Chemical Company, Ltd., Chiyoda-Ku, Tokyo, JP;
Takahiro Yamaki, Tokyo, JP;
Masanari Oda, Tokyo, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
Provided are a cathode active material with excellent high-temperature life that suppresses the elution of metal elements from the cathode active metal and the generation of different phase therein and exhibits a high potential, as well as a high-voltage lithium ion battery that achieves excellent high-temperature life by applying such a cathode active material. The cathode active material for a lithium ion battery is represented by a compositional formula LiNiMnMOF(where M is one or more elements selected from the group consisting of Ti, Ge, Mg, Co, Fe, Cu, and Al, and a, x, y, z, and δ satisfy the following formulas: 1≦a<1.08, 0.4≦x<0.5, 0<z≦0.3, a+x+y+z=3, and 0<δ≦0.2).