Abstract: The present invention relates to a method of producing an electrodeposited metal oxide coating for a supercapacitor electrode. The present invention relates to the chronoamperometric electrodeposition of the metal oxide over a period from a few seconds, up to about 30 seconds leading to superior performance as a result of an increased surface area of the deposit. According to the present invention, the capacitances achieved are typically greater than 1300 F/g, and in some instances, over 4000 F/g.

Abstract: The invention is an electrochemical battery cell with a fluid consuming electrode, such as an oxygen reduction electrode, and a fluid regulating system. The fluid regulating system includes a valve for adjusting the rate of passage of the fluid to the fluid consuming electrode. It is operated by an actuator that responds (e.g., by deforming) to changes in a potential applied across the actuator to open or close the valve. The applied potential can be the cell potential or an adjusted potential. The potential applied across the actuator can vary according to the need for more or less fluid in the fluid consuming electrode. The valve can be contained within the cell housing, for example between the fluid consuming electrode and one or more fluid entry ports in the cell housing, or it can be located outside the cell housing.

Abstract: An active manganese dioxide electrode material that exhibits improved electrochemical performances compared with conventional manganese dioxide materials includes at least one dopant. The doped manganese dioxide electrode materials may be produced by a wet chemical method (CMD) or may be prepared electrolytically (EMD) using a solution containing manganese sulfate, sulfuric acid, and a dopant, wherein the dopant is present in an amount of at least about 25 ppm.

Abstract: The cathode of a primary alkaline battery is composed of electrode grade manganese dioxide containing Zr.

Abstract: An active manganese dioxide electrode material that exhibits improved electrochemical performances compared with conventional manganese dioxide materials includes at least one dopant. The doped manganese dioxide electrode materials may he produced by a wet chemical method (CMD) or may be prepared electrolytically (EMD) using a solution containing manganese sulfate, sulfuric acid, and a dopant, wherein the dopant is present in an amount of at least about 25 ppm.

Abstract: The cathode of a primary alkaline battery is composed of electrode grade manganese dioxide containing Zr.

Abstract: An apparatus that is useful for evaluating and optimizing electrochemical processes and for electrochemically characterizing materials includes a base or substrate carrying a plurality of electrodes, at least one housing member that is secured to the base or substrate to define an electrochemical cell volume for holding an electrolyte in contact with the plurality of electrodes carried on the base, and a counter electrode disposed in the cell volume. The apparatus may be used for rapidly evaluating various parameters that influence electrochemical deposition processes, electrolytic processes and electrochemical cell performance.