Metal-halogen energy storage device and system
AssigneeThe University of Akron
InventorsRobert F. Savinell, Chung-Chiun Liu
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Abstract
A hybrid redox-halogen energy storage device and system has a housing divided into two chambers by a microporous separator. Each chamber can contain an electrolyte such as CrCl.sub.3. The microporous separator keeps the C.sub.r.sup.+2 ion in the chamber containing the negative electrode and also keeps chlorine gas (Cl.sub.2) in the positive electrode chamber.
Claims20
A metal-halogen energy storage device, comprising:
- an electro-chemical cell, said cell having a microporous separator, said cell having a temperature of from about 0.degree. C. to about 100.degree. C.;
- a positive electrode and a negative electrode located in said cell, said microporous separator separating said positive electrode and said negative electrode and forming a chamber for each said electrode;
- a negative fluid, said negative fluid located in said negative electrode chamber, said negative fluid having ions therein selected from the group consisting of tin, titanium, vanadium, and chrome;
- and
- a positive fluid, said positive fluid located in said positive electrode chamber, said positive fluid having a halogen gas and halogen ions therein.
A metal-halogen energy storage device according to claim1 wherein the microporous separator is inert relative to the electrolytes.
A process for producing or storing electrical energy in an electrical storage device having a positive electrode compartment with a positive electrode therein, and a negative electrode compartment with a negative electrode therein, comprising the steps of:
- providing a microporous separator, separating said positive electrode compartment and said negative electrode compartment with said microporous separator;
- flowing a negative fluid containing ions selected from the group consisting of chromium, vanadium, titanium, and tin, and past said negative electrode;
- flowing a positive electrode fluid containing a halogen gas and halogen ions past a positive electrode;
- and
- heating said storage device to a temperature of from about 0.degree. C. to about 100.degree. C.
Dependencies are inferred from the claim text.