Low-temperature aqueous redox flow battery
AssigneeThe Chinese University of Hong Kong
InventorsYi-Chun Lu, Fei Ai
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Abstract
Provided is an aqueous redox flow battery comprising a positive electrode, a negative electrode, a posolyte chamber containing a posolyte, a negolyte chamber containing a polyoxometalate as a negolyte, and a separator disposed between the posolyte chamber and the negolyte chamber, wherein the polyoxometalate has a conductivity of 65 mS cm−1 or more at −20° C., and the aqueous redox flow battery has a power density of 250 mW cm−2 or more at −20° C.
Claims19
An aqueous redox flow battery, comprising a positive electrode, a negative electrode, a posolyte chamber containing a posolyte wherein at least a part of the positive electrode is immersed in a solution of the posolyte, a negolyte chamber containing a polyoxometalate with H+ counter-ions as a negolyte wherein at least a part of the negative electrode is immersed in an aqueous solution of the negolyte, and a separator disposed between the posolyte chamber and the negolyte chamber,
- wherein the polyoxometalate is H6P2W18O62.
An energy storage system comprising an aqueous redox flow battery, wherein the aqueous redox flow battery comprises a positive electrode, a negative electrode, a posolyte chamber containing a posolyte wherein at least a part of the positive electrode is immersed in a solution of the posolyte, a negolyte chamber containing a negolyte of H6P2W18O62 wherein at least a part of the negative electrode is immersed in an aqueous solution of the negolyte, and a separator disposed between the posolyte chamber and the negolyte chamber.
A method for energy storage, comprising using an aqueous redox flow battery, wherein the aqueous redox flow battery comprises a positive electrode, a negative electrode, a posolyte chamber containing a posolyte wherein at least a part of the positive electrode is immersed in a solution of the posolyte, a negolyte chamber containing a negolyte of H6P2W18O62 wherein at least a part of the negative electrode is immersed in an aqueous solution of the negolyte, and a separator disposed between the posolyte chamber and the negolyte chamber.
Dependencies are inferred from the claim text.