Porous support for electrochemical reaction cell high-density integration, and electrochemical reaction cell stack and electrochemical reaction system comprising the porous support for electrochemical reaction cell high-density integration
The invention provides a porous support for integrating electrochemical reaction cells with high-density, having a plurality of through-holes, an electrochemical reaction cell stack and an electrochemical reaction system comprising the porous support for integrating electrochemical reaction cells with high-density, and the invention relates to a support for integrating electrochemical reaction cells with high-density, in which a plurality of through-holes provided in a porous support act as structural supports for electrochemical reaction cells, to an electrochemical reaction cell stack in which electrochemical reaction unit cells are integrated at a high density using the porous support, to an electrochemical reaction system comprising the electrochemical reaction cell stack, and to a manufacturing method thereof, and the present invention enables to provide a porous support for integrating electrochemical reaction cells with high-density, an electrochemical reaction cell stack and an electrochemical reaction system that can simultaneously realize a size reduction and higher-density integration of the electrochemical reaction cell stack as a unit cell integration product.
1. An electrochemical reaction cell stack comprising:
a porous support;
through-holes parallelly arrayed in the porous support; and
electrolyte and electrode materials formed on an interior surface of the through-holes,
wherein the porous support is homogeneous as a three dimensional reticulated structure around the through-holes formed by a gelling agent,
the porous support possesses gas permeability with a porosity of 15 to 47% and functions as air paths for permeating an air therethrough,
the through-holes are through-holes A extending through the porous support and the porous support has no other through-holes parallelly arrayed therein,
each of the through-holes A has a diameter of 0.4 to 0.8 mm,
the porous support comprises an air electrode material,
a layer of electrolyte material is coated onto an interior surface of each of the through-holes A,
a layer of fuel electrode material is formed on a surface of the layer of the electrolyte material in each of the through-holes A, and
each of the through-holes A functions as fuel channel for infusing a fuel gas thereinto.
2. The electrochemical reaction cell stack according to claim 1 , wherein said electrolyte material is a compound oxide comprising two or more elements selected from the group consisting of Zr, Ce, Mg, Sc, Ti, Al, Y, Ca, Gd, Sm, Ba, La, Sr, Ga, Bi, Nb and W.
3. The electrochemical reaction cell stack according to claim 1 , wherein said air electrode material comprises an oxide.
4. The electrochemical reaction cell stack according to claim 3 , wherein said air electrode material comprises an active auxiliary material, and the active auxiliary material is a metal comprising at least one element selected from the group consisting of Pt, Pd, Ag, Ba, Sr, Ca, Mg, K, Na, Mn, Fe, Co, Ni, Cu, Zn, Ti, Al, Ga, Nb, Ta, V and La, or an oxide comprising one or more of the foregoing elements.
5. An electrochemical reaction system, comprising the electrochemical cell stack defined in claim 1 , as a constituent element.
6. The electrical reaction cell stack according to claim 1 , wherein said gelling agent is an organic compound comprising at least one selected from the group consisting of agar, agarose, carrageenan, xanthane gum and gelatin.
7. The electrical reaction cell stack according to claim 1 , wherein the air electrode material comprises an oxide of at least one element selected from the group consisting of La, Mg, Ca, Sr, Mn, Co and Fe.
8. The electrical reaction cell stack according to claim 1 , wherein the porous support has a porosity of 15 to 40%.