초록

A metal-air battery includes a canister and a spiral wound electrode assembly disposed within the canister. The electrode assembly includes an ion permeable and substantially gas impermeable anode, a catalytic cathode, and a dielectric separator disposed between the anode and cathode.

대표청구항 ▼

1. A metal-air battery comprising: a canister; anda spiral wound electrode assembly disposed within the canister and including an anodic bulk matrix, a catalytic cathode, a separator disposed between the anodic bulk matrix and cathode, and a gas diffusion layer adjacent to the cathode, wherein the a

1. A metal-air battery comprising: a canister; anda spiral wound electrode assembly disposed within the canister and including an anodic bulk matrix, a catalytic cathode, a separator disposed between the anodic bulk matrix and cathode, and a gas diffusion layer adjacent to the cathode, wherein the anodic bulk matrix includes an active material having a surface area defining voids within the anodic bulk matrix and a non-porous coating on the surface area and wherein the non-porous coating is water and hydroxide ion permeable and substantially active metal ion and gas impermeable. 2. The battery of claim 1 further comprising a current collector in contact with the anodic bulk matrix. 3. The battery of claim 1 wherein the anodic bulk matrix further includes a conductive additive. 4. The battery of claim 3 wherein the conductive additive is conductive fibers, conductive nanotubes, a graphite powder, a metal powder, a conductive polymer, metal whiskers, compressed metal fibers, a metal felt, or a carbon felt. 5. The battery of claim 1 wherein the non-porous coating is a polymer or a metal oxide. 6. The battery of claim 1 wherein the active material is a metal. 7. The battery of claim 1 wherein the canister is configured to permit gas to flow therethrough. 8. The battery of claim 7 wherein the canister is configured to promote generally uniform flow of the gas into the electrode assembly. 9. The battery of claim 7 wherein the canister has an end portion having a surface defining a plurality of passageways configured to promote generally uniform flow of the gas into the electrode assembly. 10. The battery of claim 7 wherein the electrode assembly includes an end portion and wherein the canister has an end portion adjacent to the end portion of the electrode assembly including a surface defining a plurality of ducts configured to promote swirling flow of the gas near the end portion of the electrode assembly. 11. The battery of claim 7 wherein the canister is configured to be fluidly connected to a source of pressurized gas. 12. The battery of claim 1 further comprising an oxygen reservoir disposed within the canister.