A multi-layer piezoelectric element and an injection apparatus using the same are provided. The piezoelectric element comprises a stack (10) having a plurality of piezoelectric layers (1) and a plurality of inner electrodes (12), the piezoelectric layers a...

[Problem] There are provided a multi-layer piezoelectric element in which an external electrode plate can adapt itself to displacement of a stacked body successfully and development of cracks and occurrence of breaking in an electrically conducting bonding...