Cathode material for battery
View Patent ↗The cathode of an alkaline battery can include an electrically conductive additive to increase the cathode efficiency. The additive can include a barium salt and an electrically conductive material. The electrically conductive material can be coated on a surface of the barium salt. The electrically conductive material can be an electrically conductive metal oxide.
1. An alkaline battery comprising:
a cathode comprising an additive, the additive including a barium salt and a coating on a surface of the barium salt, and a manganese dioxide;
an anode comprising zinc;
a separator between the cathode and the anode; and
an alkaline electrolyte in contact with the cathode and the anode.
2. The battery of claim 1 , wherein the coating is electrically conductive.
3. The battery of claim 2 , wherein the coating includes a metal oxide.
4. The battery of claim 3 , wherein the metal oxide is a tin oxide.
5. The battery of claim 1 , wherein the barium salt includes barium sulfate, barium hydroxide, barium carbonate, or barium oxide.
6. The battery of claim 1 , wherein the manganese dioxide is an electrolytic manganese dioxide.
7. The battery of claim 1 , wherein the service life of the battery in an intermittent discharge test is at least 2% longer than the service life of a battery lacking the additive.
8. The battery of claim 1 , wherein the service life of the battery in an intermittent discharge test is at least 3% longer than the service life of a battery lacking the additive.