Alkaline electrochemical cell
AssigneeEveready Battery Company, Inc.
InventorRobert P. Johnson
Life of this patent
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Abstract
An alkaline electrochemical cell is provided which efficiently utilizes active materials within the cell to achieve enhanced cost efficiency. The electrochemical cell includes a container defining a sealed volume and an anode and cathode disposed in the sealed volume of the container. The cathode includes manganese dioxide and the anode includes zinc. A ratio of zinc weight to anode volume is less than 1.8. An alkaline electrolyte is disposed in the container in contact with the anode and cathode, and water is disposed within the container. A weight ratio of water to manganese dioxide is greater than 0.28, and a weight ratio of water to zinc is greater than 0.65.
Claims42
An electrochemical cell comprising:
- a container defining a sealed volume;
- a cathode disposed within the container and comprising manganese dioxide;
- an anode disposed within the container and comprising zinc, wherein a ratio of zinc weight to anode volume in the container is less than 1.80 g/cm3, wherein the anode is the only anode present in the container;
- an alkaline electrolyte disposed within the container in contact with the anode and cathode;
- and
- water disposed within the container, wherein a weight ratio of the water to the total manganese dioxide is greater than 0.28.
An electrochemical cell comprising:
- a container defining a sealed volume;
- a cathode disposed within the container and comprising manganese dioxide;
- an anode disposed within the container and comprising zinc, wherein a ratio of zinc weight to anode volume is less than 1.80 g/cm3, wherein the anode is the only anode present in the container;
- an alkaline electrolyte disposed within the container in contact with the anode and cathode;
- and
- water disposed within the container, wherein a weight ratio of water to zinc is greater than 0.65, and wherein a weight ratio of water to total manganese dioxide is greater than 0.28.
An electrochemical cell comprising:
- a container defining a sealed volume;
- a cathode disposed within the container and comprising manganese dioxide;
- an anode disposed within the container and comprising zinc, wherein a ratio of zinc weight to anode volume is less than 1.80 g/cm3, wherein the anode is the only anode present in the container;
- water disposed within the container, wherein a weight ratio of the water to total manganese dioxide is greater than 0.28;
- and
- an alkaline electrolyte disposed within the container in contact with the anode and cathode.
Dependencies are inferred from the claim text.