Methods of making a fe-cr electrolyte and redox flow battery systems using the electrolyte
AssigneeCougar Creek Technologies, LLC
InventorsLiyu Li, Qingtao Luo
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Abstract
A method of making an Fe—Cr electrolyte includes a) oxidizing a carbon-containing Fe—Cr alloy with Fe2O3 or FeO; and b) treating the oxidized carbon-containing Fe—Cr alloy with FeCl3 or HCl or any combination thereof to produce a FeCl2—CrCl3 electrolyte. The method may also include treating, under reducing conditions, a starting material, such as chromite ore, with a carbon source to produce the carbon-containing Fe—Cr alloy. Additionally or alternatively, the method may include removing a portion of the FeCl2 from the FeCl2—CrCl3 electrolyte to obtain a selected iron to chromium molar ratio for the Fe—Cr electrolyte.
Claims20
A method of making an Fe—Cr electrolyte, the method comprising:
- a) oxidizing a carbon-containing Fe—Cr alloy with Fe2O3 or FeO;
- and
- b) treating the oxidized carbon-containing Fe—Cr alloy with FeCl3 or HCl or any combination thereof to produce a FeCl2—CrCl3 electrolyte.
Dependencies are inferred from the claim text.