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:
Apr. 18, 2023
Filed:
Jan. 19, 2017
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventors:
Hayato Fujita, Osaka, JP;
Kenji Motoi, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/026 (2016.01); H01M 8/0273 (2016.01); H01M 8/18 (2006.01);
U.S. Cl.
CPC ...
H01M 8/026 (2013.01); H01M 8/0273 (2013.01); H01M 8/188 (2013.01);
Abstract
A bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery. The bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves. The bipolar plate includes rough surfaces which are disposed in at least parts of groove inner surfaces defining the respective grooves and surface roughness of which represented by arithmetic mean roughness Ra is 0.1 μm or larger.