An alloy member includes a base member that includes a plurality of recesses in a surface and is constituted by an alloy material containing chromium, a plurality of embedded portions that are respectively disposed in the plurality of recesses, and a coating layer that covers the base member and is connected to the plurality of embedded portions. An average value of actual lengths of line segments of the plurality of embedded portions is longer than an average value of straight lengths of straight lines of the plurality of embedded portions in a cross-section of the base member along a thickness direction of the base member. The average value of the actual lengths is 1.10 times or more the average value of the lengths of the straight lines.

The electrochemical system includes a plurality of identical fuel cells electrically connected in series and an air supply system configured to supply air to the fuel cells in parallel and to recover air from the fuel cells, the air supply system including an inlet manifold and an outlet manifold each including a common conduit and individual conduits, each individual conduit of the inlet manifold being connected to an air inlet port of a respective fuel cell, each individual conduit of the outlet manifold being connected to an air outlet port of a respective fuel cell and a single air compressor for forcing air to flow through the inlet manifold, the fuel cells and the outlet manifold.

The electrochemical system includes a plurality of identical fuel cells electrically connected in series and an air supply system configured to supply air to the fuel cells in parallel and to recover air from the fuel cells, the air supply system including an inlet manifold and an outlet manifold each including a common conduit and individual conduits, each individual conduit of the inlet manifold being connected to an air inlet port of a respective fuel cell, each individual conduit of the outlet manifold being connected to an air outlet port of a respective fuel cell and a single air compressor for forcing air to flow through the inlet manifold, the fuel cells and the outlet manifold.

Provided is a fuel cell stack that includes a plurality of fuel cells, the fuel cells stacking an anode electrode layer, a cathode electrode layer, and a solid electrolyte layer sandwiched between the anode electrode layer and the cathode electrode layer, the plurality of fuel cells being stacked having a separator disposed therebetween. The fuel cell stack includes a fuel channel through which fuel passes, the fuel channel formed between adjacent two of the fuel cells by the separator; and a U-turn channel configured to connect the fuel channel to the anode electrode layer. The fuel channel is formed extending in a stacking surface direction of the fuel cells, and the fuel channel includes heat balance adjusting means configured to adjust heat balance of the fuel cells. The U-turn channel is formed to bend from one end of the fuel channel to the anode electrode layer.

Provided is a fuel cell stack that includes a plurality of fuel cells, the fuel cells stacking an anode electrode layer, a cathode electrode layer, and a solid electrolyte layer sandwiched between the anode electrode layer and the cathode electrode layer, the plurality of fuel cells being stacked having a separator disposed therebetween. The fuel cell stack includes a fuel channel through which fuel passes, the fuel channel formed between adjacent two of the fuel cells by the separator; and a U-turn channel configured to connect the fuel channel to the anode electrode layer. The fuel channel is formed extending in a stacking surface direction of the fuel cells, and the fuel channel includes heat balance adjusting means configured to adjust heat balance of the fuel cells. The U-turn channel is formed to bend from one end of the fuel channel to the anode electrode layer.

A fuel cell includes a cell stack including a plurality of unit cells stacked in a first direction; a first end plate including a guide through-hole formed therein, the first end plate being disposed on one end of two ends of the cell stack; a second end plate including a guide support hole formed therein, the guide support hole overlapping the guide through-hole in the first direction, the second end plate being disposed on an opposite end of the two ends of the cell stack; and an enclosure surrounding a side portion between the two ends of the cell stack together with the first end plate and the second end plate, the enclosure being formed as a unitary structure. The enclosure includes a body surrounding the side portion of the cell stack and first and second ends coupled to the first end plate and the second end plate, respectively.

A fuel cell includes a cell stack including a plurality of unit cells stacked in a first direction; a first end plate including a guide through-hole formed therein, the first end plate being disposed on one end of two ends of the cell stack; a second end plate including a guide support hole formed therein, the guide support hole overlapping the guide through-hole in the first direction, the second end plate being disposed on an opposite end of the two ends of the cell stack; and an enclosure surrounding a side portion between the two ends of the cell stack together with the first end plate and the second end plate, the enclosure being formed as a unitary structure. The enclosure includes a body surrounding the side portion of the cell stack and first and second ends coupled to the first end plate and the second end plate, respectively.

A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.

A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.

Stacked bodies each formed by alternately stacking power generation cells and separators are fixed to an end plate, the separators each having a flow passage portion, a gas flow-in port, and a gas flow-out port. The end plate includes upper and lower end plates sandwiching the stacked bodies. The stacked bodies are arranged side by side and a first thermal deformation absorbing portion configured to absorb thermal deformation in a direction orthogonal to a stacking direction is formed between the stacked bodies. Fixing means for fixing the stacked bodies to the end plate fix at least outer peripheral portions of the stacked bodies arranged side by side to the end plate.