Electrically heatable honeycomb structure having corrugated layers of different cell density

A honeycomb body for an electrically heatable catalytic converter in an exhaust gas tract, having a plurality of flow channels through which flow can occur along a main through flow direction, comprising:

• a plurality of separate metal foils stacked on one another to form a layer stack, which is wound around at least one pivot point, the layer stack, when wound, forms a plurality of winding layers,
• wherein the layer stack has:
• a first corrugated layer having at least one first metal foil which has a first corrugation defined by a first cell density per unit of area,
• a second corrugated layer having at least one second metal foil which has a second corrugation defined by a second cell density per unit of area,
• wherein the honeycomb body has the plurality of winding layers, which are spaced apart from one another in a radial direction of the honeycomb body in a wound state by an air gap that electrically isolates the individual winding layers from one another,
• wherein the first cell density per unit of area of the first corrugation is different from the second cell density per unit of area the second corrugation such that the first cell density per unit area of the first corrugation is between 100 cpsi (cells per square inch) and 150 cpsi and the second cell density per unit area of the second corrugation is between 25 cpsi and 80 cpsi,
• wherein the layer stack has at least three corrugated layers, and
• wherein respective corrugated layers are each separated from one another by a smooth or microstructured third metal foil.