Abstract: A fuel cell stack including: a metal-supported cell including a power generation cell formed of paired electrodes and an electrolyte sandwiched from both sides between the paired electrodes, and a metal supporting portion which is made of metal and which supports the power generation cell; a separator defining and forming a flow passage portion for gas flow between the separator and the power generation cell; a welded portion in which the metal-supported cell and the separator are welded to each other; a spring portion configured to apply absorption reaction force for absorbing displacement in a stacking direction in the welded portion to the metal-supported cell; and a stopper portion configured to restrict a displacement amount of the spring portion.

Abstract: A fuel cell stack including: a metal-supported cell including a power generation cell formed of paired electrodes and an electrolyte sandwiched from both sides between the paired electrodes, and a metal supporting portion which is made of metal and which supports the power generation cell; a separator defining and forming a flow passage portion for gas flow between the separator and the power generation cell; a welded portion in which the metal-supported cell and the separator are welded to each other; a spring portion configured to apply absorption reaction force for absorbing displacement in a stacking direction in the welded portion to the metal-supported cell; and a stopper portion configured to restrict a displacement amount of the spring portion.

Abstract: A cell unit is provided for a solid oxide fuel cell, and has a sequential stack of a power generation cell, an auxiliary collector layer and a separator. The power generation cell includes a cathode layer, an electrolyte layer, and an anode layer. The auxiliary collector layer assists electrical contact. The separator is provided with flow passage portions that define a gas flow passage for gas. The auxiliary collector layer has a curved in an arch shape that is disposed so as to overlap the gas flow passage in the stacking direction, and that is curved so as to project toward the power generation cell side.

Abstract: A cell unit is provided for a solid oxide fuel cell, and has a sequential stack of a power generation cell, an auxiliary collector layer and a separator. The power generation cell includes a cathode layer, an electrolyte layer, and an anode layer. The auxiliary collector layer assists electrical contact. The separator is provided with flow passage portions that define a gas flow passage for gas. The auxiliary collector layer has a curved in an arch shape that is disposed so as to overlap the gas flow passage in the stacking direction, and that is curved so as to project toward the power generation cell side.

Abstract: Provided is a fuel cell including: a membrane electrode assembly (30) formed by joining an anode (32) to one surface of an electrolyte membrane (31) and joining a cathode (33) to another surface of the electrolyte membrane (31); a frame body (20) formed integrally with the membrane electrode assembly (30); and a pair of separators (40, 41) holding the membrane electrode assembly (30) and the frame body (20) therebetween. At least one pair of holding pieces (42, 43) holding the membrane electrode assembly (30) therebetween is formed in the pair of separators (40, 41). Positions of holding end portions (42a, 43a) of the pair of holding pieces (42, 43) are shifted from each other in a stacking direction of the fuel cell.

Abstract: A membrane electrode assembly with frame includes a membrane electrode assembly 2 in which an electrolyte membrane 11 is held between a pair of electrode layers 12, 13; and a resin frame 1 disposed around the membrane electrode assembly 2. The frame 1 includes an opening 1A in which the membrane electrode assembly 2 is disposed, a step 1B that is formed along an edge of the opening, and an inner peripheral portion 1C that is deviated to one side of the frame due to the step 1B. The outer peripheral portion of the membrane electrode assembly 2 is joined to the inner peripheral portion 1C on one side opposite the deviated side. In the frame 1, the inner peripheral portion 1C, to which the membrane electrode assembly 2 is joined, has a thickness approximately equal to the thickness of the body, while the step 1B has a larger thickness. This configuration ensures the strength against a force in the thickness direction and thereby prevents the frame 1 from being damaged.

Abstract: A fuel cell stack has a stacked plurality of cell modules, each of the plurality of cell modules comprising a stacked plurality of single cells, each of the plurality of single cells comprising a membrane electrode assembly sandwiched between a pair of separators, a pair of end plates that sandwich the plurality of cell modules in the stacking direction, sealing plates to seal a reactant gas, disposed between the plurality of cell modules and between outermost cell modules and the end plates, and a voltage measuring terminal protruding to an outside of the cells, provided in at least one of the sealing plates.

Abstract: A fuel cell stack has a stacked plurality of cell modules, each of the plurality of cell modules comprising a stacked plurality of single cells, each of the plurality of single cells comprising a membrane electrode assembly sandwiched between a pair of separators, a pair of end plates that sandwich the plurality of cell modules in the stacking direction, sealing plates to seal a reactant gas, disposed between the plurality of cell modules and between outermost cell modules and the end plates, and a voltage measuring terminal protruding to an outside of the cells, provided in at least one of the sealing plates.

Abstract: Provided is a fuel cell including: a membrane electrode assembly (30) formed by joining an anode (32) to one surface of an electrolyte membrane (31) and joining a cathode (33) to another surface of the electrolyte membrane (31); a frame body (20) formed integrally with the membrane electrode assembly (30); and a pair of separators (40, 41) holding the membrane electrode assembly (30) and the frame body (20) therebetween. At least one pair of holding pieces (42, 43) holding the membrane electrode assembly (30) therebetween is formed in the pair of separators (40, 41). Positions of holding end portions (42a, 43a) of the pair of holding pieces (42, 43) are shifted from each other in a stacking direction of the fuel cell.

Abstract: To provide a means of further improving the cell's start-up capability (below-freezing-point-start-up capability) in a low temperature environment in the gas diffusion layer used in the fuel cell. It is a gas diffusion layer for fuel cell having a pore volume of micropores of 2.0×10?4 cm3/cm2 or higher.

Abstract: A method of manufacturing a semiconductor device by which an element region for electronic circuits or the like is formed on the surface of a semiconductor substrate, a diaphragm region is formed in the bottom surface of the semiconductor substrate, and a plurality of openings having different areas and shapes are formed in the semiconductor substrate. The method includes a step of forming a first diaphragm region in the bottom surface of a semiconductor substrate, a step of partially forming a second diaphragm region in the first diaphragm region, the second diaphragm region being thinner than the first diaphragm region, and a step of forming an opening by removing part or the whole of the second diaphragm region.