Varta Microbattery Gmbh

Edward Pytlik

David Ensling

Winfried Gaugler

Rainer Hald

Martin Krebs

Stefan Stock

Claus-Christian Fischer

Horst Wagner

Jürgen Ernsperger

Stefanie Scholz

Stefan Senz

Claudio Schula

Ihor Chumak

Berthold Häussler

Martin Elmer

Hans Jürgen Lindner

Michael Gottschalk

Bernd Beck

Martin Fürst

Hald Rainer

Günter Röger

Moritz Hadlik

A secondary electrochemical cell includes a negative electrode including as an output conductor, a metallic or metal-coated open-pore form or a metallic or metal-coated nonwoven, as a carbon-based storage material that enables storage of electrical charge in the electrode through formation of an electrical double layer (Helmholtz double layer), activated carbon having a BET surface area of at least 800 m/g, a non-carbon-based H2 storage material that can chemisorb hydrogen and/or store it as a metal hydride, a positive electrode including as an output conductor, a metallic or metal-coated open-pore form or a metallic or metal-coated nonwoven, and nickel hydroxide and/or nickel oxyhydroxide, a porous separator that separates the negative electrode and the positive electrode from one another, an aqueous alkaline electrolyte with which the electrodes and the separator are soaked, and a housing that encases the electrodes, the separator and the electrolyte.

Secondary electrochemical cell and charging method

An emergency system for power failures includes a single-cell or multiple-cell rechargeable battery selected from the group consisting of NiMH, NiCd, NiZn, AgO/Zn or lithium-ion, and a charging electronics system that charges the battery, wherein the charging electronics system provides a charging voltage at which the battery does not overcharge at a temperature of up to 80&#xb0; C., and wherein the charging electronics system supplies a charging voltage at which the battery is transferred into a charging state and/or is kept in a charging state, in which the battery is charged to 5% to 30%.

Emergency system for power failures

A button cell has a winding arranged in the cup-shaped, positive-polarity housing half such that one of the flat end sides points in the direction of the cup base, the circumferential outer side thereof bears against the circumferential cup wall and the outer side together with the cup wall forms a clamping zone in which the first current output conductor is clamped.

Button cell with winding electrode

A method of producing a button cell having an anode including metal particles, including providing an anode mixture including as constituents metal particles, at least one binder, at least one conducting agent and, optionally, a gassing inhibitor, providing a button cell housing, introducing the mixture into the button cell housing, admixing the mixture with an electrolyte, and liquid-tight sealing of the housing, wherein the constituents of the mixture are contacted in the presence of water prior to introduction into the housing, and after the contacting the water is removed from the mixture at least partially.

Anode mixture, button cell with an anode comprising metal particles, and production thereof

Growing community of inventors

Ellwangen, Germany

Edward Pytlik