NOVELTY - The element has two plates (3) that are stacked one over the other through a metal layer (5). The through-holes (9) formed along thickness direction of the plates are filled with thermoelectric conversion materials e.g. nanowires (11). The metal layer functions both as electrode layer and a buffer layer for absorbing deformation due to heating of the thermoelectric conversion material.    USE - Stacked thermoelectric element with power generation function for use in motor vehicle.    ADVANTAGE - The thermoelectric conversion performance of the thermoelectric element is improved while avoiding peeling of the one plate from plate and ensuring conduction property.    DETAILED DESCRIPTION - The element has the metal layer formed between the plates with through-holes filled with thermoelectric conversion materials e.g. nanowire. The metal layer functions as electrode layer and buffer layer. The thickness of the metal layer is set according to the difference of the coefficient of the thermal expansion of the plates and the thermoelectric conversion material. The thickness of the metal layer is larger than the dimension of the thermoelectric conversion material protruding from the surface of the plates. The metal layer comprises a thin film electrode layer made of titanium/nickel/copper and a solder layer. The plates are stacked in predetermined manner such that the through-holes formed in one plate do not align with the through-holes in other plates. Diameter of the through-holes formed in one plate is different from the diameter of the through-holes formed in other plate. An INDEPENDENT CLAIM is included for manufacturing method of stacked thermoelectric element which involves formation of the metal layer in between the plates that are formed with through-holes filled with nanowires. Before stacking the plates one over the other, edges of the plates are flattened. The flattening process is performed at temperature lower than the service temperature of the stacked thermoelectric element, if the coefficient of the thermal expansion of the nanowire is larger than the coefficient of the thermal expansion of the plate. The flattening process is performed at temperature higher than the service temperature of the stacked thermoelectric element, if the coefficient of the thermal expansion of the nanowire is smaller than the coefficient of the thermal expansion of the plate.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the stacked thermoelectric element.    Plates (3)    Metal layer (5)    Base material (7)    Through-hole (9)    Nanowire (11)