Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Technische Universitát Dresden

Technische Universitaet Dresden

Sceye Sa

King Abdulaziz City for Science and Technology

Holger Althues

Stefan Kaskel

Benjamin Schumm

Thomas Abendroth

Sebastian Tschoecke

Susanne Dörfler

Susanne Doerfler

Felix Hippauf

Christine Weller

Kay Schoenherr

Sören Thieme

Jan Brückner

David Kim

Mikkel Vestergaard Frandsen

Thomas Berger

Christian Schrage

Ines Dani

Markus Hagen

Nicolai Dresel

Christian Girsule

Daniel Jordan

Paul Hartel

Ingolf Bauer

Gerrit Maeder

Sebastian Tschocke

Erik Troschke

Jens Liebich

Markus Piwko

Fabian Bormann

Michael Kohl

Paul HÄRTEL

Saleh Abdulrahman Alajlan

Ahmed M Almogbel

Ahmed Almaleki

Talal Alrajhi

Daniel Fritsche

Christian Schult

Sebastian TSCHÖCKE

Kay SCHÖNHERR

Susanne Dorfler

A cathode unit for a solid-state battery and a method for producing the cathode unit. The cathode unit has a layer made of a composite material () which has an electrode material, a solid electrolyte material, an electrically conductive conducting additive and polyetrafluoroethylene as a binder. The composite material contains less than 1 wt. % polyetrafluoroethylene and the polyetrafluoroethylene is present, at least in part, as fibrillated polyetrafluoroethylene.

Cathode unit and method for producing a cathode unit

A method for producing a solid electrolyte membrane () or an anode unit for a solid-state battery, in which method a powder mixture consisting of a solid electrolyte material and polytetrafluoroethylene is produced for the solid electrolyte membrane () and a powder mixture consisting of an electrode material, a solid electrolyte material, an electrically conductive conduction additive and polytetrafluoroethylene is produced for the anode unit, at least partially fibrillated polytetrafluoroethylene is formed by applying shear forces to the powder mixture, and the powder mixture is shaped into a flexible composite layer. The powder mixture has at most 1 wt. % polytetrafluoroethylene.

Method for producing a solid electrolyte membrane or an anode, and solid electrolyte membrane or anode

The invention relates to a method for producing a dry film (), wherein a dry powder mixture is processed into the dry film () by a rolling device comprising a first roller () and a second roller (). The first roller () has a higher circumferential rotational speed than the second roller (), and the dry film () is placed on the first roller ().

Method for producing a dry film, rolling device

A lithium sulfur battery with a low solvating electrolyte at an amount of less than 2 μl per mg sulfur. The electrolyte comprises dioxolane and hexylmethylether, as well as a Li salt, for example LiTSFi. The electrolyte is free from lithium nitrate, LiNO.

LiS battery with low solvating electrolyte

The invention relates to an electrolyte, which is provided for an alkali-sulfur battery (e.g. for a Li&#x2014;S battery). The electrolyte contains a non-polar, acyclic and non-fluorinated ether, a polar aprotic organic solvent, and a conducting salt for an alkali-sulfur battery. It has been found that, when such an electrolyte is used in an alkali-sulfur battery, a high-capacity, a low overvoltage, a high cycle stability, and a high Coulomb efficiency can be achieved in the alkali-sulfur battery and, in addition, as compared with an alkali-sulfur battery which contains a fluorinated ether in the electrolyte, a considerably improved gravimetric energy density is obtained. The invention further relates to a battery comprising the electrolyte according to the invention and to uses of the electrolyte according to the invention.

Electrolyte for an alkali-sulfur battery, alkali-sulfur battery containing the electrolyte, and uses of the electrolyte

The present invention relates to a method for producing a substrate () which is coated with an alkali metal (), in which method a promoter layer () which is composed of a material which reacts with the alkali metal () by at least partial chemical reduction of the promoter layer () is applied to a surface of the substrate () and a surface of the promoter layer () is acted on by an alkali metal () and then the alkali metal () is converted into the solid phase and a coating containing the alkali metal is formed.

Method for producing a substrate, which is coated with an alkali metal, by means of a promoter layer, and a coated substrate

The invention relates to a coating which has special absorption properties for electromagnetic radiation from the wavelength spectrum of sunlight and to a method for producing the coating and to its use. The coating is formed by a layer which is formed on the surface of a substrate or on a reflective layer formed on the surface of the substrate. Carbon nanotubes are contained in the layer. The proportion of carbon nanotubes contained per unit of area or unit of volume and/or the layer thickness of the layer is selected such that it absorbs electromagnetic radiation from the wavelength spectrum of sunlight at predefinable proportions and the proportion of electromagnetic radiation from the wavelength spectrum of a black radiator at a temperature greater than 50&#xb0; C. which is emitted is very small.

Coating, method for the production thereof and use thereof

The invention relates to a cathode unit for an alkaline metal/sulphur battery, containing a cathode arrester, which comprises a carbon substrate, and an electrochemically active component, which is selected from sulphur or an alkaline metal sulphide and is in electrically conductive contact with the carbon substrate.

Cathode unit for an alkaline metal/sulfur battery having an optimised arrester structure

The present invention relates to a process for producing a cathode foil of a lithium-containing battery, comprising:

Cathode for lithium-containing batteries and solvent-free method for the production thereof

A Li&#x2014;S battery including a cathode and an anode and at least one of a lithium-containing liquid electrolyte, gel electrolyte, and solid electrolyte disposed between the cathode and the anode. The cathode includes at least one of an electrically conductive carbon material, an electrochemically active cathode material that comprises sulphur, and at least partially fibrillar plastic material. The anode includes a conducting substrate which is coated at least in regions with at least one of silicon and tin. A method for operation thereof.

Lithium-sulphur (Li&#x2014;S) battery with high cycle stability and method for operation thereof

A method for manufacturing photocatalytically active titanium dioxide layers on substrate surfaces. The method reduces the effort for the manufacture of photocatalytically active titanium dioxide layers and increases the choice for the coating of suitable substrate materials. In the method, a titanium compound present in the gas phase and water vapor are directed to a preheated substrate by means of gas phase hydrolysis and a titanium dioxide layer is foamed on the surface of the substrate by chemical reaction. In this respect, the titanium compound and water vapor are supplied separately from one another so that a flow speed of at least 0.5 m/s is achieved and the time between the first contact of the two gases up to the impact on the surface of the substrate is kept lower than 0.05 s, and in this process the photocatalytically active titanium dioxide layer is formed on the substrate surface.

Method for producing photocatalytically active titanium dioxide layers

Growing community of inventors

Dresden, Germany

Holger Althues