Zinc-based alloys for stable and high-performance seawater-based aqueous batteries
AssigneeUniversity of Central Florida Research Foundation, Inc.
InventorYang Yang
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Abstract
An alloy anode for a seawater based aqueous battery and a universal strategy for preparing anodes for use in seawater based aqueous batteries. Zn-M alloys (where M can be manganese or other transition metal) were prepared by co-electrodeposition in the presence of hydrogen bubble formation to produce a porous nanostructured alloy that can serve as an anode for a seawater based aqueous battery. Exemplary Zn—Mn alloy anodes achieved stability over thousands of cycles even under harsh electrochemical conditions, including testing in seawater-based aqueous electrolytes and using a high current density of 80 mA cm−2. The anode design strategy allows for the production of durable electrodes for aqueous batteries and other applications.
Claims10
An anode for aqueous batteries, comprising a substrate having a coating of a porous nanostructure formed by an alloy of zinc and a transition metal, the coating comprising a plurality of pores having a diameter between 5 nanometers and 50 microns and configured to function as an anode in an aqueous battery.
An aqueous battery, comprising:
- an electrochemical cell including an anode having a porous nanostructured alloy of zinc and a transition metal coating comprising a plurality of pores having a diameter between 5 nanometers and 50 microns and, a cathode, and a seawater-based electrolyte;
- and
- wherein the porous nanostructured alloy remains dendrite free at a current density of 80 milliamps per centimeter squared.
Dependencies are inferred from the claim text.