An electrochemical device includes a container, a storage element, and a structure. The container includes a container main body including a first inner surface, and a lid including a second inner surface that is opposed to the first inner surface, the lid being joined to the container main body. The storage element includes a first electrode layer that is bonded to the first inner surface, a second electrode layer that is bonded to the second inner surface, and a separator that is provided between the first electrode layer and the second electrode layer, the storage element being sandwiched between the first inner surface and the second inner surface. The structure is provided to at least one of the first inner surface and the second inner surface, at least partially embedded in an inside of at least one of the first electrode layer and the second electrode layer, and made of a cured conductive adhesive.