| CPC H01M 8/0258 (2013.01) [C01B 3/34 (2013.01); H01M 8/2483 (2016.02); H01M 8/2484 (2016.02); C01B 2203/0205 (2013.01); C01B 2203/066 (2013.01); C01B 2203/1241 (2013.01)] | 21 Claims |
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1. An electrochemical element comprising:
a conductive plate-like support provided with an internal passage therein, the internal passage being configured such that a first gas that is one of reducing component gas and an oxidative component gas flows through the internal passage,
wherein the plate-like support comprises:
a gas-permeable portion through which gas is permeable between the internal passage, which is located inside the plate-like support, and the outside; and
an electrochemical reaction portion that is formed by stacking at least a film-like electrode layer, a film-like electrolyte layer, and a film-like counter electrode layer in the stated order in a predetermined stacking direction so as to entirely or partially cover the gas-permeable portion,
wherein the internal passage comprises a plurality of auxiliary passages through which the first gas flows in a predetermined flowing direction, and a distribution portion that is provided on an upstream side of the plurality of auxiliary passages in the flowing direction of the first gas,
wherein the plate-like support comprises a supply structure that is located between the distribution portion and the plurality of auxiliary passages in the flowing direction and in which the first gas is temporarily stored in the distribution portion and supply of the first gas from the distribution portion to the plurality of auxiliary passages is limited,
wherein the supply structure comprises a supply passing portion through which the first gas flows from the distribution portion to the plurality of auxiliary passages, and a supply preventing portion that prevents the first gas from flowing from the distribution portion to the plurality of auxiliary passages,
wherein the plate-like support comprises a plurality of auxiliary passage forming portions that form the plurality of auxiliary passages, and a plurality of partitioning portions that are each provided between adjacent auxiliary passage forming portions to separate adjacent auxiliary passages, and
wherein the plurality of partitioning portions are arranged such that at least one of the partitioning portions corresponds to the supply passing portion in the flowing direction.
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