Cathode for air assisted battery

1. A method for making an air recovery battery, the method comprising:

(a) combining MnO 2 , carbon, a binder, and a solvent to form a cathode paste, wherein the MnO 2 consists essentially of electrochemically synthesized MnO 2 , and wherein the cathode paste contains at least about 60% by total weight MnO 2 , wherein the total weight is calculated as the combined weight of the manganese dioxide, the carbon, the binder, and any other additives that optionally are included in the paste;

(b) spreading the cathode paste on a current collector and removing the solvent to form a cathode;

(c) inserting the cathode into a container, wherein the container includes an air access port and air entering the air access port can contact the cathode;

(d) inserting anode material into the container, wherein the anode material comprises zinc; and

(e) sealing the container to provide the air recovery battery,

wherein the cathode is the only cathode included in the air recovery battery.

2. The method of claim 1 , wherein the cathode paste contains at least about 70% by total weight MnO 2 .

3. The method of claim 2 , wherein the cathode paste contains at least about 80% by total weight MnO 2 .

4. The method of claim 3 , wherein the cathode paste contains at least about 85% by total weight MnO 2 .

5. The method of claim 4 , wherein the cathode paste contains at least about 90% by total weight MnO 2 .

6. The method of claim 1 , wherein the air recovery battery is a cylindrical battery.

7. The method of claim 6 , wherein the air recovery battery is a AAA battery.

8. The method of claim 6 , wherein the air recovery battery is a AA battery.

9. The method of claim 6 , wherein the air recovery battery is a C battery.

10. The method of claim 6 , wherein the air recovery battery is a D battery.

11. The method of claim 1 , wherein the air recovery battery is a prismatic battery.

12. The method of claim 1 , wherein the air recovery battery is a racetrack battery.