Granted Patent B2

US 10,693,125 · App. 15/626,601 · Granted Jun 23, 2020

Abstract

Claims (14)

1. An alkaline electrochemical cell comprising:

a cathode;

an anode comprising an anode active material; and

a non-conductive separator disposed between the cathode and the anode;

wherein:

from about 20% to about 50% by weight of the anode active material relative to a total amount of anode active material has a particle size of less than about 75 μm, and less than about 20% by weight of the anode active material, relative to the total amount of the anode active material, has a particle size of greater than about 150 μm; and

the separator comprises a unitary, cylindrical configuration having an open end, a side wall, and an integrally formed closed end disposed distally to the open end.

2. The alkaline electrochemical cell of claim 1 , wherein the anode active material has an apparent density from about 2.62 g/cc to about 2.92 g/cc.

3. The alkaline electrochemical cell of claim 1 , wherein the anode active material comprises a zinc alloy, wherein the zinc alloy comprises zinc, indium, and bismuth.

4. The alkaline electrochemical cell of claim 3 , wherein the zinc alloy comprises:

about 130 ppm to about 270 ppm of bismuth; and

about 130 ppm to about 270 ppm of indium.

5. The cell of claim 3 , wherein the zinc alloy is present in the anode from about 62% to about 70% by weight, relative to the total weight of the anode.

6. The cell of claim 3 , wherein the zinc alloy is present in the anode at about 63% by weight relative to the total weight of the anode.

Assignments (8)