Rayovac Corporation

Ronald J Ekern

Janna L Rose

Terry G Messing

Miguel E Armacanqui

Kenneth H Kenyon

Patricia S Bennett

Niles A Fleischer

Randall L Collien

Josie B Wieser

Alane M Boutelle

A sodium polyacrylate superabsorbent polymer made by bulk polymerization and characterized as described herein is a superior gelling agent when provided at a suitable concentration in a gelled anode for an alkaline electrochemical cell. Suitable gelled anodes, alkaline electrochemical cells containing such gelled anodes, and methods for making and using same are also described.

Sodium polyacrylate gelling agent for zinc gelled anode

An ionically permeable separator for a LeClanche cell, and methods of making and using same, are provided for in the invention. The separator comprises a Kraft paper separator and a corrosion-inhibiting coating thereupon selected to prevent corrosion of a zinc anode of the LeClanche cell. The separator may be configured for use in round or flat LeClanche cells. The separators of the invention may be used in heavy duty batteries containing an electrolyte comprising zinc chloride as a primary component. Cells made in accordance with the invention exhibit comparable or improved capacity and other performance characteristics in respect of conventional cells.

Method of making an ionically permeable separator for a leclanche cell

Method of making a reduced environmental hazard leclanche cell having

A potassium polyacrylate superabsorbent polymer made by modified bulk polymerization and characterized as described herein is a superior gelling agent when provided at a suitable concentration in a gelled anode for an alkaline electrochemical cell. Suitable gelled anodes, alkaline electrochemical cells containing such gelled anodes, and methods for making and using same are also described.

Gelling agent for alkaline electrochemical cells

A low iron zinc anode for a LeClanche cell, and methods of making and using same, are provided for in the invention. The zinc anode contains at least 95% zinc and no more than about 12 ppm iron, and may be configured for use in round or flat LeClanche cells. The zinc anodes of the invention may be used in general purpose and heavy duty batteries containing an electrolyte comprising zinc chloride as a primary component. Cells made in accordance with the invention exhibit improved capacity and other performance characteristics in respect of conventional cells.

Method of making a zinc anode for a reduced environmental hazard

Method of making reduced environmental hazard LeClanche cell having

Zinc anode for reduced environmental hazard LeClanche cell having

Reduced environmental hazard leclanche cell having improved performance

Ionically permeable separator for leclanche cell

Reduced environmental hazard LeClanche cell having improved performance

A lithium-thionyl chloride cell which has a lithium-aluminum alloy at the anode surface for reducing voltage delay.

Lithium-thionyl chloride cell with lithium surface alloys to reduce

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Verona, WI, United States of America

Ronald J Ekern