Rechargeable alkaline battery comprising metal hydroxide separator
AssigneeResearch Foundation of the City University of New York
InventorsJinchao Huang, Gautam G. Yadav, Joshua Gallaway, Michael Nyce, Sanjoy Banerjee
Life of this patent
Estimating the term…
Abstract
A rechargeable alkaline battery includes an anode comprising zinc, a cathode, and separator disposed between the anode and the cathode. The separator comprises a water-insoluble metal hydroxide. For example, the water-insoluble metal hydroxide can be magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, or any combination thereof. The separator comprising the water-insoluble metal hydroxide can serve to capture a portion of any zincate ions produced at the anode prior to the zincate ions passing through the separator to the cathode.
Claims9
A method comprising:
- combining an inorganic material with a binder to form a mixture, wherein the inorganic material comprises a water insoluble hydroxide of metals selected from the alkaline earth group;
- and
- forming the mixture into a free-standing dried sheet of separator material, wherein the free-standing dried sheet of separator material comprises 70 wt. % to 99 wt. % of the inorganic material, and 1 wt. % to 30 wt. % of the binder, and wherein the inorganic material is selected from the group consisting of:
- magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, and any combination thereof;
- and
- incorporating the free-standing dried sheet into a rechargeable battery.
Dependencies are inferred from the claim text.