Varta Microbattery Gmbh

Vw-Vm Forschungsgesellschaft Mbh & Co. Kg

Volkswagen Varta Microbattery Forschungsgesellschaft Mbh & Co. Kg

Arno Perner

Martin Winter

Thomas Woehrle

Dejan Ilic

Konrad Holl

Horst Wagner

Eduard Pytlik

Stefan Koller

Nikolaus Hochgatterer

Rainer Hald

Martin Krebs

Rolf Hennrich

Mario Schweiger

Thomas Wöhrle

Peter Haug

Calin Wurm

Alfons Joas

Kemal Akca

Johannes Maier

Mario Rene Schweiger

Nikolaus Stefan Hochgatterer

An electrode for a lithium ion battery includes a matrix based on at least one polysaccharide and also particles of at least one electrochemically active material which are embedded in the matrix, with the electrode being free of synthetic polymeric compounds. A battery contains the electrode and a polysaccharide is a binder for electrochemically active electrode materials for such an electrode.

Electrodes and lithium-ion cells with a novel electrode binder

A button cell includes a positive electrode, a negative electrode and a separator arranged in a housing comprising a cell cup and a cell lid insulated from one another by a seal, wherein the negative electrode is tablet-shaped pressed body having a self-supporting structure.

Galvanic element with a high capacity

An electrochemical element in the form of a button cell having at least one lithium-intercalating electrode, wherein the cell cover or the cell cup has an opening which is closed in a sealed manner during the formation process. Once the formation process has been completed, it is opened briefly for gas to escape from the cell, and is then closed in a gastight manner. The cell cover and the cell cup are composed in particular of metal. The opening can be closed by a metal or metal/plastic composite sheet, which is adhesively bonded or welded to the cell cover or to the cell cup.

Electrochemical element in the form of a button cell, and a method for producing an electrochemical element

A method for producing a rechargeable button cell having a negative electrode composed of a lithium/indium alloy, a positive lithium/intercalating electrode and an organic electrolyte, a lithium layer and an indium layer are introduced into a negative housing half-section. The positive electrode material is introduced into a positive housing half-section. The two housing half-sections are beaded to form the button cell once the organic electrolyte has been added and a separator has been placed in between, with a seal being inserted between the housing half-sections. A lithium-indium alloy is formed from the lithium layer and the indium layer by storage or a subsequent charging/discharge cycle.

Method for producing a rechargeable electrochemical element

Growing community of inventors

Ellwangen, Germany

Arno Perner