An electrochemical hydrogen pump includes: a cell including a proton conductive electrolyte membrane having a first main surface and a second main surface, a cathode disposed on the first main surface of the proton conductive electrolyte membrane, and an anode disposed on the second main surface of the proton conductive electrolyte membrane; a voltage applier that applies a voltage between the anode and the cathode; a cooler that cools the cell; and a controller that controls the cooler to increase an amount of cooling per unit time of the cell when a pressure of a cathode gas flow path on the cathode increases.

An electrochemical hydrogen pump includes: a cell including a proton conductive electrolyte membrane having a first main surface and a second main surface, a cathode disposed on the first main surface of the proton conductive electrolyte membrane, and an anode disposed on the second main surface of the proton conductive electrolyte membrane; a voltage applier that applies a voltage between the anode and the cathode; a cooler that cools the cell; and a controller that controls the cooler to increase an amount of cooling per unit time of the cell when a pressure of a cathode gas flow path on the cathode increases.

In an electrochemical hydrogen pump, an anode separator, an anode diffusion layer, an electrolyte membrane, a cathode diffusion layer and a cathode separator are laminated sequentially, in which the anode separator has a first recess portion that accommodates the anode diffusion layer, and a bottom surface of the first recess portion is a bowl-shaped curved surface having a protruding central portion; the cathode separator has a second recess portion that accommodates the cathode diffusion layer, and a bottom surface of the second recess portion is a bowl-shaped curved surface having a recessed central portion.

In an electrochemical hydrogen pump, an anode separator, an anode diffusion layer, an electrolyte membrane, a cathode diffusion layer and a cathode separator are laminated sequentially, in which the anode separator has a first recess portion that accommodates the anode diffusion layer, and a bottom surface of the first recess portion is a bowl-shaped curved surface having a protruding central portion; the cathode separator has a second recess portion that accommodates the cathode diffusion layer, and a bottom surface of the second recess portion is a bowl-shaped curved surface having a recessed central portion.

An electrochemical hydrogen pump includes: a cell including a proton conductive electrolyte membrane having a first main surface and a second main surface, a cathode disposed on the first main surface of the proton conductive electrolyte membrane, and an anode disposed on the second main surface of the proton conductive electrolyte membrane; a voltage applier that applies a voltage between the anode and the cathode; a cooler that cools the cell; and a controller that controls the cooler to increase an amount of cooling per unit time of the cell when a pressure of a cathode gas flow path on the cathode increases.

An electrochemical hydrogen pump includes: a cell including a proton conductive electrolyte membrane having a first main surface and a second main surface, a cathode disposed on the first main surface of the proton conductive electrolyte membrane, and an anode disposed on the second main surface of the proton conductive electrolyte membrane; a voltage applier that applies a voltage between the anode and the cathode; a cooler that cools the cell; and a controller that controls the cooler to increase an amount of cooling per unit time of the cell when a pressure of a cathode gas flow path on the cathode increases.

A compressor includes a stack of electrochemical cells each including an anode, a cathode, and an electrolyte membrane sandwiched therebetween, an end plate at an end in a stacking direction of the stack, and a voltage applicator that applies a voltage between the anode and the cathode, wherein, the compressor causes, by using the voltage applicator to apply the voltage, hydrogen in a hydrogen-containing gas fed to the anode to move to the cathode and produces compressed hydrogen, the end plate has a first channel through which a heating medium flows, the stack has a second channel extending therethrough and connected to the first channel, the first channel has a smaller cross-sectional area than the second channel and includes an annular channel and a transverse passage extending across the annular channel, and an external channel disposed outside the stack and through which the heating medium flows is connected to the transverse passage.

A compressor includes a stack of electrochemical cells each including an anode, a cathode, and an electrolyte membrane sandwiched therebetween, an end plate at an end in a stacking direction of the stack, and a voltage applicator that applies a voltage between the anode and the cathode, wherein, the compressor causes, by using the voltage applicator to apply the voltage, hydrogen in a hydrogen-containing gas fed to the anode to move to the cathode and produces compressed hydrogen, the end plate has a first channel through which a heating medium flows, the stack has a second channel extending therethrough and connected to the first channel, the first channel has a smaller cross-sectional area than the second channel and includes an annular channel and a transverse passage extending across the annular channel, and an external channel disposed outside the stack and through which the heating medium flows is connected to the transverse passage.