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:
Mar. 18, 2025
Filed:
Nov. 12, 2020
Vehicle Energy Japan Inc., Hitachinaka, JP;
Takeshi Miki, Ibaraki, JP;
Yuki Takei, Ibaraki, JP;
Yusuke Tachikawa, Ibaraki, JP;
Shuichi Suzuki, Ibaraki, JP;
VEHICLE ENERGY JAPAN INC., Hitachinaka, JP;
Abstract
Provided is a positive electrode for a lithium ion secondary battery that suppresses both a decrease in discharge capacity and an increase in internal resistance due to charging and discharging. The positive electrode for the lithium ion secondary battery includes a positive-electrode current collector and a layered structure provided on the positive-electrode current collector, in which the outermost layer of the layered structure contains a first positive-electrode active material represented by LiMOwherein X satisfies −0.15≤X≤0.15, Mrepresents an element group including Ni, Co, and Mn, and the innermost layer of the layered structure contains a second positive-electrode active material represented by LiMOwherein Y satisfies −0.15≤Y≤0.15, and Mrepresents an element group including Ni, Co, and at least one of Mn or Al.