Patent ID: 9689838
Date: 2017-06-27
CPC Classifications: G01N,H01M,Y02E,Y02P

Claim:
1. An analytical cell comprising a first substrate and a second substrate overlapped with each other to form an overlapping portion, a negative electrode active material and a positive electrode active material being provided in the overlapping portion and separately contacting electrolytic solution, an observation window for transmission of an electron beam being formed in the overlapping portion, wherein the first substrate and the second substrate have respective first through holes extending therethrough in a thickness direction thereof; the second substrate further has a second through hole extending therethrough in the thickness direction; the first through holes are covered with respective transmission membranes respectively from one surface side of the first substrate and one surface side of the second substrate, the transmission membranes each having an electron beam permeability; the second through hole is closed by a lid member from another surface side of the second substrate, in the overlapping portion, the first substrate and the second substrate are joined together by a solid state joint, and the transmission membrane of the first substrate and the transmission membrane of the second substrate are spaced from each other by a predetermined distance, the solid state joint being formed by solid state bonding of a first solid portion protruding from the first substrate and a second solid portion protruding from the second substrate; the first substrate and the second substrate are positioned to each other, wherein the observation window is formed at a position where the first through holes face each other, and an accommodating part is formed between the lid member and the first substrate through the second through hole; one of the negative electrode active material and the positive electrode active material is provided in the accommodating part, and another of the negative electrode active material and the positive electrode active material is provided between the transmission membranes of the observation window; and a negative electrode collector and a positive electrode collector extend from inside of the overlapping portion and protrude outside the overlapping portion, and the negative electrode collector and the positive electrode collector are electrically connected respectively to the negative electrode active material and the positive electrode active material inside the overlapping portion.