Cathode unit and method for producing a cathode unit
AssigneesFraunhofer-Gesellschaft Zur Foerderung Angewandten Forschung E.V., Technische Universitaet Dresden
InventorsFelix HIPPAUF, Benjamin SCHUMM, Sebastian TSCHOECKE, Holger ALTHUES, Stefan KASKEL, Susanne DOERFLER
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Abstract
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 (2) 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.
Claims14
A cathode unit for a solid state battery comprising a layer composed of a composite material that has an electrode material, a solid electrolyte material, an electrically conductive additive, and polytetrafluoroethylene as a binding agent,
- the composite material comprises less than 1 weight percent polytetrafluoroethylene;
- and
- the polytetrafluoroethylene is at least partially present as fibrillated polytetrafluoroethylene.
A method of producing a cathode unit for a solid state battery, comprising
- producing a powder mixture from an electrode material, a solid electrolyte material, an electrically conductive additive, and polytetrafluoroethylene as a binding agent, wherein the powder mixture comprises less than 1 weight percent polytetrafluoroethylene;
- and
- producing at least partially fibrillated polytetrafluoroethylene in the powder mixture by the action of shear forces on the powder mixture, and shaping
- the powder mixture into a flexible composite layer.
Dependencies are inferred from the claim text.