Title:
METHOD FOR REGENERATING ELECTROLYTE SOLUTION FOR REDOX FLOW BATTERIES AND METHOD FOR OPERATING REDOX FLOW BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/149224
Kind Code:
A1
Abstract:
The present invention provides a method for regenerating an electrolyte solution for redox flow batteries, the method enabling suppression of the generation itself of aggregates, which are derived from a metal oxide formed by charging and discharging of a redox flow battery, or enabling re-reduction of generated aggregates by acting on an electrolyte solution that contains at least metal ions including manganese ions and the aggregates, thereby preventing the generation of aggregates that directly lead to a decrease in the capacity of the electrolyte solution and tremendously improving the service life of the electrolyte solution. This regeneration method comprises a contact step in which the electrolyte solution and an inert gas that may contain a reducing gas are brought into contact with each other, thereby making the average particle diameter of aggregates less than 5 µm.
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Inventors:
SATO YUKARI (JP)
SAKAI TAKAAKI (JP)
OHIRA AKIHIRO (JP)
KANEGA RYOICHI (JP)
SAKAI TAKAAKI (JP)
OHIRA AKIHIRO (JP)
KANEGA RYOICHI (JP)
Application Number:
PCT/JP2023/001603
Publication Date:
August 10, 2023
Filing Date:
January 20, 2023
Export Citation:
Assignee:
NAT INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND THCHNOLOGY (JP)
International Classes:
H01M8/18; H01M8/008; H01M8/04
Domestic Patent References:
| WO2020004403A1 | 2020-01-02 | |||
| WO2013164879A1 | 2013-11-07 | |||
| WO2014208322A1 | 2014-12-31 | |||
| WO2011111254A1 | 2011-09-15 | |||
| WO2016104237A1 | 2016-06-30 |
Foreign References:
| JP2013008640A | 2013-01-10 |
Attorney, Agent or Firm:
MEBUKI IP LAW FIRM et al. (JP)
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