Method of manufacturing an electrochemical device

Details Method of manufacturing an electrochemical device Method of manufacturing an electrochemical device

1987-08-03

1989-01-17

Tung, T.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

204425, 204426, 204427, 264 61, G01N 2746

Patent

active

047986930

ABSTRACT:
A method of manufacturing an electrochemical device having an electrochemical cell including a planar solid electrolyte body and at least two electrodes disposed in contact with the solid electrolyte body. The method comprising: forming a first unfired ceramic layer on one side of an unfired structure of the electrochemical cell, the first unfired ceramic layer being given a porous structure by firing thereof; forming a second unfired ceramic layer on the other side of the unfired structure of the electrochemical cell, the second unfired ceramic layer having substantially the same property of firing shrinkage as the first unfired ceramic layer; and co-firing the unfired structure of the electrochemical cell, the first and second unfired ceramic layers. The two unfired ceramic layers may be formed on opposite sides of an unfired structure of an electrochemical cell assembly which includes plural cells, for example, an oxygen pumping cell and an oxygen sensing cell. In this case, another unfired ceramic layer may be formed between the unfired structures of the two cells. The electrochemical device manufactured by the method does not have a unfavorable warpage that would arise due to difference in firing shrinkage between the layers.

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