Duracell Inc.

Tdk Corporation

Duracell, a Division of the Gillette Company

George Cintra

Viet H Vu

G Stephen Kelsey

David V Adamson

John D Sillesky

Purush Chalilpoyil

Alex Kaplan

Karthik Ramaswami

Philp D Trainer

Ignacio Chi

An alkaline cell is disclosed having a cathode comprising manganese dioxide wherein the cathode is a semisolid during discharge of the cell. The cell has an anode comprising zinc and an electrolyte comprising potassium hydroxide. The semisolid cathode comprising manganese dioxide may be in the form of a putty or paste. The semisolid cathode reduces cathode polarization effects and results in increased manganese dioxide utilization (Amp-hr/g), particularly at high current drain, between about 0.5 and 2 Amp. The porosity of the cathode is between about 45% and 70%, and the volume ratio of electrolyte solution in the cathode to the solids in the cathode is at a value between about 0.7 and 2.3.

Alkaline cell with semisolid cathode

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Holliston, MA, United States of America

George Cintra