Varta Batterie Aktiengesellschaft

H. C. Starck, Gmbh & Co Kg

Oskar Glemser

Jurgen Bauer

Dieter H Buss

Sven Albrecht

Peter Axmann

Helga Low

A mixed metal hydroxide with brucite structure is described, which contains nickel hydroxide as its main component and at least one trivalent metal selected from the group consisting of Co, Fe, Al, Ga, In, Sc, Y and La in an amount of from about 12 to about 30 atom % relative to the sum of the metal components including Ni. The invention also relates to a rechargeable battery containing a mixed metal hydroxide according to the invention as an electrochemically active material as well as a secondary batter containing the mixed metal hydroxide. The invention also relates to a process for producing a mixed metal hydroxide having a brucite structure.

Active material for rechargeable batteries

Manganese(III)-containing nickel(II) hydroxide powders produced by coprecipitation carried out by dropping an acidified metal salt solution containing Ni.sup.+2 and Mn.sup.+3 ions into a feed of constant pH value, such that manganese(III) is incorporated into the nickel(II) hydroxide lattice, thereby preventing disproportionation into separate phases and improving performance characteristics of secondary battery electrodes manufactured therefrom.

Manganese (III)-containing nickel (II) hydroxide for the production of

A positive collector electrode with an active material which comprises a double hydroxide of the general formula

Positive collector electrode for batteries with alkaline electrolytes

A positive electrode for alkaline storage cells is disclosed. The active material for the positive electrode is a double hydroxide of the formula

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Gottingen, Germany

Oskar Glemser