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:
Aug. 21, 2007
Filed:
Apr. 30, 2002
Michiru Kubata, Osaka, JP;
Hiroyuki Nakaishi, Osaka, JP;
Nobuyuki Tokuda, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
The Kansai Electric Power Co., Inc., Osaka, JP;
Abstract
The present invention provides electrolyte that can suppress reduction of battery efficiencies and capacities with increased cycles of charge/discharge of the battery, a method for producing the same, and a redox flow battery using the same electrolyte. The redox flow battery uses the electrolyte having a NHcontent of not more than 20 ppm and a relation of Si concentration (ppm)×electrolyte quantity (m)/electrode area (m) of less than 5 ppm·m/m. By limiting a quantity of contaminants in the electrolyte, a clogging of carbon electrodes to cause reduction of the battery performances with increased charge/discharge operations can be suppressed.