Redox flow battery
AssigneeSumitomo Electric Industries, Ltd.
InventorsToshio Shigematsu, Yongrong Dong, Takahiro Kumamoto
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Abstract
A redox flow (RF) battery performs charge and discharge by supplying a positive electrode electrolyte and a negative electrode electrolyte to a battery cell. Each of the positive electrode electrolyte and the negative electrode electrolyte contains a vanadium (V) ion as active material. At least one of the positive electrode electrolyte and the negative electrode electrolyte further contains another metal ion, for example, a metal ion such as a manganese ion that exhibits a higher redox potential than a V ion or a metal ion such as a chromium ion that exhibits a lower redox potential than a V ion.
Claims8
A redox flow battery performing charge and discharge by supplying a positive electrode electrolyte and a negative electrode electrolyte to a battery cell,
- each of said positive electrode electrolyte and said negative electrode electrolyte containing a vanadium ion,
- at least said positive electrode electrolyte further containing a divalent manganese ion higher in redox potential than the vanadium ion, and
- a total concentration of said divalent manganese ion being not less than 0.1M and not more than 0.5M.
Dependencies are inferred from the claim text.