Evonik Degussa Gmbh

Degussa Aktiengesellschaft

Ferro Corporation

Evonik Operations Gmbh

Petr Novak

Volker Hennige

Christian Hying

Gerhard Hoerpel

Jens Vetter

Michael Holzapfel

Frank-Martin Petrat

Hartmut Wiggers

Carsten Jost

Reinhard Nesper

Gerhard Hörpel

Hilmi Buqa

Burkhard Reeken

Evelyn Albrecht

Anna Prodi-Schwab

David Lee

Marcello Coluccia

The invention relates to a process for producing coated carbon particles, which comprises coating electrically conductive carbon particles with elemental doped or undoped silicon by chemical vapor deposition from at least one gaseous silane in an oxygen-free gas atmosphere in a reaction space, with the electrically conductive carbon particles being in continual motion during the vapor deposition, and also correspondingly coated carbon particles and their use in anode materials for lithium ion batteries.

Method for producing coated carbon particles and use of the latter in anode materials for lithium-ion batteries

A separator for an electrochemical cell, comprising (A) a flexible perforate support, and (B) a porous ceramic material which fills the perforations in the support and is suitable for receiving an ion-conducting electrolyte, wherein the porous ceramic material comprises a first porous layer which is characterized by an average pore size and also at least one second porous layer for contacting with an electrode, the second porous layer having an average pore size which is smaller than the average pore size of the first porous layer.

Asymetrical pore structure separator for an electrochemical cell

The invention relates to an electrode material for a lithium ion battery which is distinguished by the fact that the electrode material comprises

Nanoscalar silicon particles in negative electrode materials for use in lithium-ion batteries

A separator for an electrochemical cell, comprising (A) a flexible perforate support, (B) a porous first ceramic material which fills the perforations in the support and which (i) has a pore structure which is characterized by an average pore size, and (ii) is suitable for receiving an ion-conducting electrolyte, wherein (C) the electrolyte-contactable pore surface of the first porous ceramic material is covered with fine particles of a further material to extend the use life, the average size of the fine particles being in the range from 0.5 to 30% and preferably in the range from 1 to 15% of the average pore size of the ceramic material.

Separator with long-term stability for an electrochemical cell

The invention relates to an electrolyte composition consisting of an ionic liquid, a conducting salt, a film former and a viscosity modifier and also to the use of the electrolyte composition of the present invention as an electrolyte material for electrochemical energy storage systems, especially for lithium-metal and lithium-ion batteries.

Electrolyte composition in addition to the use thereof as an electrolyte material for electrochemical energy storage systems

Separator provided with asymmetrical pore structures for an electrochemical cell

The electrode material for positive electrodes of rechargeable lithium batteries is based on a lithium transition metal oxide. Said lithium transition metal oxide is a lithium transmission metal mixed oxide with at least two transition metals (for example nickel and/or manganese), has a layer structure and is doped (for example, with aluminium and/or boron). This inventive electrode material is characterized by a high cycle stability, yet is still economical to produce.

Electrode material for positive electrodes of rechargeable lithium batteries

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Brugg, Switzerland

Petr Novak