Method for manufacturing metal support of electrochemical element, electrochemical element, electrochemical module, electrochemical device, energy system, solid oxide fuel cell, solid oxide electrolytic cell and metal support

摘要

Provided are electrochemical devices and the like with improved workability and cost during mass production while ensuring sufficient strength and performance. The metal support 1 of the electrochemical element has a plate shape as a whole, and has a plurality of penetration spaces 1c penetrating from the front side surface 1a to the back side surface 1b, with the surface on which the electrode layer is provided as the front side surface 1a. The region where the through space 1c is formed in the front side surface 1a is defined as the hole region 1g, the opening of the front side surface 1a of the through space 1c is defined as the front side opening 1d, and the opening which is the ratio of the front side opening 1d in the hole region 1g The rate is 0.1% or more and 7.0% or less.