Laminated piezoelectric element used as a drive source for injecting into a vehicle, comprises a laminated body containing piezoelectric layers, and a pair of lateral electrode layers made from a porous material

摘要

Laminated piezoelectric element comprises a laminated body containing piezoelectric layers (12), and a pair of lateral electrode layers (31, 32) made from a porous material, in which in any region with a surface area of 10,000 Micro 2> the number of pores with a main diameter of 1-50 Micro lies in the region of 100-6,000 and in any region with a surface area of 10,000 Micro 2> the porosity based on pores with a main diameter of 1-50 Micro lies in the region of 15-50%.