Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a reactive barrier layer on an yttrium-stabilized zirconia (YSZ) electrolyte, in consideration that there exists a need for a reactive barrier layer having excellent characteristics.SOLUTION: There is provided a solid oxide fuel cell (SOFC) or SOFC sub-component which includes a YSZ solid oxide electrolyte layer (10), a LSCF cathode layer (14) and a mixed phase layer (18) disposed between the electrolyte layer and the cathode layer and containing at least zirconia and ceria, while the cathode layer is directly in contact with the mixed phase layer and ceria is not present other than in the mixed phase layer, in between the cathode layer and the electrolyte layer. A method for manufacturing a SOFC or sub-component includes the steps of: forming a ceria layer on an electrolyte layer; heating the electrolyte layer and the ceria layer to form a mixed phase layer; and removing excessive ceria from a surface of the mixed phase layer before applying the cathode layer.
Abstract:
A solid oxide fuel cell (SOFC) device having a gradient interconnect is provided, including a first gradient interconnect having opposing first and second surfaces, a first trench formed over the first surface of the first gradient interconnect, a second trench formed over the second surface of the first gradient interconnect, and an interconnecting tunnel formed in the first gradient interconnect for connecting the first and second trenches. A first porous conducting disc is placed in the first trench and partially protrudes over the first surface of the first gradient interconnect. A first sealing layer is placed over the first surface of the first gradient interconnect and surrounds the first trench. A membrane electrode assembly (MEA) is placed over the first surface of the first gradient interconnect and contacted with the first porous conducting disc and the first sealing layer.
Abstract:
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.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrode material which has excellent durability and is applicable to a fuel cell.SOLUTION: An air electrode material contains a complex oxide having a perovskite structure expressed by a general formula ABO. The complex oxide contains P with a weight amount of equal to or more than 1 ppm and equal to or less than 50 ppm, Cr with a weight amount of equal to or more than 1 ppm and equal to or less than 500 ppm, and B with a weight amount of equal to or more than 1 ppm and equal to or less than 50 ppm to the total amount of the complex oxide.
Abstract:
The present invention relates to a thin and in principle unsupported solid oxide cell, comprising at least a porous anode layer, an electrolyte layer and a porous cathode layer, wherein the anode layer and the cathode layer comprise an electrolyte material, at least one metal and a catalyst material, and wherein the overall thickness of the thin reversible cell is about 150 µm or less, and to a method for producing same. The present invention also relates to a thin and in principle unsupported solid oxide cell, comprising at least a porous anode layer, an electrolyte layer and a porous cathode layer, wherein the anode layer and the cathode layer comprise an electrolyte material and a catalyst material, wherein the electrolyte material is doped zirconia, and wherein the overall thickness of the thin reversible cell is about 150 µm or less, and to a method for producing same. The present invention further provides a thin separation membrane, comprising at least a porous anode layer, a membrane layer comprising a mixed conducting material and a porous cathode layer, wherein the anode layer and the cathode layer comprise the mixed conducting material and a catalyst material, and wherein the overall thickness of the thin separation membrane is about 150 µm or less.
Abstract:
Aims at providing a metal oxygen battery capable of supplying oxygen and perform charge/discharge stably. A metal oxygen battery 1 includes a positive electrode 2 to which oxygen is applied as an active substance, a negative electrode 3 to which a metal is applied as an active substance, an electrolyte layer 4 disposed between the positive electrode 2 and the negative electrode 3, and a case 5 hermetically housing the positive electrode 2, the negative electrode 3, and the electrolyte layer 4. The positive electrode 2 includes an oxygen-storing material having a catalyst function with respect to a cell reaction, and a function of, during discharge, ionizing oxygen and binding the oxygen with metal ions transferring from the negative electrode 3 through the electrolyte layer 4 to the positive electrode 2 to thereby form a metal oxide, and during charge, reducing the metal oxide and storing oxygen.