Patent ID: 8663870

Claim:
An electrochemical device comprising linked bonded bodies in which a pair of electrodes are oppositely arranged with an electrolyte membrane in between in an in-plane direction by a conductive connection member, wherein the electrolyte membrane has a reaction region sandwiched between the pair of electrodes, and has a peripheral region that is exposed from the pair of electrodes and that is provided with adhesive layers on opposite sides of the electrolyte membrane, and the connection member has two flat sections and a bent section provided between the two flat sections, the respective two flat sections are contacted with one of the pair of electrodes of adjacent bonded bodies, and the bent section is bonded to each of the adhesive layers, wherein each of the adhesive layers includes a first contact layer contacted with the electrolyte membrane, and a second contact layer on a side opposite to the electrolyte membrane with respect to the first contact layer, wherein the second contact layer is separate from the first contact layer; and wherein each of the adhesive layers includes a barrier layer and a strength retention layer between the first contact layer and the second contact layer, wherein the barrier layer is separate from the strength retention layer.