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:
Oct. 16, 2012
Filed:
Sep. 10, 2010
Yongrong Dong, Osaka, JP;
Toshio Shigematsu, Osaka, JP;
Takahiro Kumamoto, Osaka, JP;
Michiru Kubata, Osaka, JP;
Yongrong Dong, Osaka, JP;
Toshio Shigematsu, Osaka, JP;
Takahiro Kumamoto, Osaka, JP;
Michiru Kubata, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A redox flow battery having a high electromotive force and capable of suppressing generation of a precipitation is provided. In a redox flow battery, a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode, a negative electrode, and a membraneinterposed between the electrodesand, to charge and discharge the battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The redox flow batterycan suppress generation of a precipitation of MnO, and can be charged and discharged well by containing a titanium ion in the positive electrode electrolyte, or by being operated such that the positive electrode electrolyte has an SOC of not more than 90%. In addition, the redox flow batterycan have a high electromotive force equal to or higher than that of a conventional vanadium-based redox flow battery.