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. 12, 2020
Filed:
Mar. 08, 2018
Panasonic Corporation, Osaka, JP;
Toru Ujihara, Aichi, JP;
Kohei Ishikawa, Aichi, JP;
PANASONIC CORPORATION, Osaka, JP;
Abstract
A lithium secondary battery has a positive electrode, an electrolyte containing lithium ions, and a negative electrode current collector having a surface on which a lithium metal or a lithium alloy is deposited/dissolved. In the surface of the negative electrode current collector, a group comprising at least one region whose principal crystal plane is a close-packed plane of the crystal structure or an off plane having an off-angle of 20° or less with respect to the close-packed plane occupies the largest area among three or four groups each comprising at least one region having a principal crystal plane three of whose Miller indices are each represented by 0 or 1 or an off-plane having an off-angle of 20° or less with respect to the principal crystal plane, the principal crystal plane being different for each of the three or four groups.