Volkswagen Ag

Julian Koopmann

Jonathan Edward Mueller

Vedran Glavas

Julian Wegener

Knut Schmidt

Fabian Fischer

Stéphane Brice Olouou Guifo

Marco Wiethop

The invention relates to a secondary particle for a cathode of a secondary lithium battery cell that comprises a plurality of primary particles, each having a layered crystalline structure in which transition metal oxide layers and lithium layers alternate. Each of the primary particles has a spatial extension in the direction of its crystallographic c-axis that is greater than in a direction perpendicular to this axis. The invention also relates to a method for producing such a particle.

Secondary particle for a cathode of a secondary lithium battery cell and method for producing such a particle

An apparatus and to a method for producing a three-dimensional object built up from at least one material layer by selective solidification of at least one powder raw material applied successively in raw material tracks to a build platform via an application unit of the apparatus. In this case, the apparatus for solidifying the raw material via energy input from a beam has an irradiation unit forming a build group together with the application unit, wherein the irradiation unit having a contiguous group of irradiation elements is rotatably mounted on the application unit.

Apparatus and method for producing a three- dimensional object built up from at least one material layer

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Braunschweig, Germany

Julian Koopmann