Rovcal, Inc.

Roval, Inc.

Juergen Scherer

Ernest Ndzebet

William C Bushong

Viet H Vu

Deborah Gilbert

Karthik Ramaswami

Paul Cheeseman

Erik Mortensen

Zhihong Jin

Akshaya Kumar

The present invention relates to a copper-manganese mixed oxide cathode material, which is suitable for use in a cathode of an electrochemical cell, and which has the formula MnCuO.nHO, wherein the oxidation state of Cu is between about +1 and about +3, the oxidation state of Mn is between about +2 and about +7, x is equal to about 3-y, y is less than about 3, z is calculated or experimentally determined, using means known in the art, based on the values of x and y, as well as the oxidation states of Mn and Cu, and nHO represents the surface and structural water present in the mixed oxide material. The present invention further relates to an electrochemical cell comprising the noted cathode material.

Copper-manganese mixed oxide cathode material for use in alkaline cells having high capacity

Aspects of the present invention provide a high capacity electrochemical cell having an anode, a cathode, and a separator disposed between the anode and cathode. The cathode includes a mixture having a first component, a second component and a third component. The first component includes a first element, the second component includes a second element, and the third component includes the first element and the second element. The mixture can, for instance, be a mixed metal oxide. The separator is configured to provide suitable ionic transport between the anode and the cathode.

Alkaline cells having high capacity

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New-Ulm, Germany

Juergen Scherer