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:
May. 21, 2019
Filed:
Nov. 18, 2015
Hitachi Chemical Company, Ltd., Tokyo, JP;
Shingo Itoh, Tokyo, JP;
Manabu Ochida, Tokyo, JP;
Takanori Kajimoto, Tokyo, JP;
Youhei Itoh, Tokyo, JP;
Tadashi Yoshiura, Tokyo, JP;
HITACHI CHEMICAL COMPANY, LTD, Tokyo, JP;
Abstract
A lithium-ion battery with high safety is provided. A lithium-ion batteryincludes an electrode group, an electrolyte, and a battery containerthat contains the electrode groupand the electrolyte. The electrode groupis formed by stacking a positive electrode and a negative electrode via a separator. The positive electrode contains a composite oxide of lithium, nickel, manganese, and cobalt as a main positive active material. The negative electrode contains amorphous carbon as a main negative active material. The lithium-ion batteryhas a discharge capacity of 20 Ah or more. The ratio (the value of Y/X) of a volume Y occupied by the electrolyte to a volume X of a void space in the battery containeris 0.65 or more.