摘要:
An electrochemical hydrogen pump includes an electrolyte membrane having a pair of primary surfaces; a cathode catalyst layer provided on one primary surface of the electrolyte membrane; an anode catalyst layer provided on the other primary surface of the electrolyte membrane; a cathode gas diffusion layer provided on the cathode catalyst layer; an anode gas diffusion layer provided on the anode catalyst layer; and a voltage application device applying a voltage between the cathode catalyst layer and the anode catalyst layer. The anode gas diffusion layer includes a laminate of metal sheets which are provided with vents, and among the metal sheets, the maximum diameter of vents provided in a first metal sheet adjacent to the anode catalyst layer is smaller than the maximum diameter of vents provided in a second metal sheet adjacent to the first metal sheet.
摘要:
A fuel cell system (100) includes a fuel feeder (1) that supplies fuel, a fuel cell stack (6) that generates power through an electrochemical reaction using air and a hydrogen-containing gas generated from the fuel, a temperature sensor (7) that senses the temperature of the fuel cell stack (6), and a controller (10). The fuel cell stack (6) has a membrane electrode assembly (6e) including an electrolyte membrane (6a) through which protons can pass, a cathode (6b) on one side of the electrolyte membrane (6a), and an anode (6c) on the other side of the electrolyte membrane (6a). The controller (10) defines an upper limit of current output from the fuel cell stack (6) on the basis of the temperature of the fuel cell stack (6) and the supply of the fuel and keeps the current output from the fuel cell stack (6) at or below the upper limit.
摘要:
A hydrogen system includes: a compressor that includes an anode, a cathode, and an electrolyte membrane interposed therebetween and generates compressed hydrogen by applying a voltage between the anode and the cathode to move protons extracted from anode fluid supplied to the anode to the cathode; a voltage applicator that applies the voltage between the anode and the cathode; a first flow passage through which a cathode off-gas containing the compressed hydrogen discharged from the cathode is supplied to the anode of the compressor; a first on-off valve disposed in the first flow passage; and a controller that causes the voltage applicator to apply the voltage with the first on-off valve opened during a period of time from startup of the hydrogen system until supply of the cathode off-gas to a hydrogen reservoir is started.
摘要:
An electrochemical hydrogen pump includes at least one hydrogen pump unit including an electrolyte membrane, an anode on one main surface of the electrolyte membrane, a cathode on the other main surface of the electrolyte membrane, an anode separator on the anode, and a cathode separator on the cathode, the at least one hydrogen pump unit transferring, to the cathode, hydrogen supplied to the anode and pressurizing the hydrogen, a first fixing member for preventing movement of the cathode separator in a direction in which the cathode separator is stacked, a first end plate on the anode separator at one end in the stacking direction, a second end plate on the cathode separator at the other end in the stacking direction, and a first gas flow channel through which hydrogen in the cathode is supplied to a first space between the second end plate and the cathode separator.
摘要:
An electrochemical cell for a hydrogen pump includes an electrolyte membrane, an anode catalyst layer disposed on one main surface of the electrolyte membrane, a cathode catalyst layer disposed on the other main surface of the electrolyte membrane, an anode gas diffusion layer disposed on the anode catalyst layer, and a cathode gas diffusion layer disposed on the cathode catalyst layer. When a voltage is applied between the anode catalyst layer and the cathode catalyst layer, the cathode gas diffusion layer is exposed to a hydrogen-containing gas at a pressure higher than that at the anode gas diffusion layer. A thickness of the anode gas diffusion layer is greater than or equal to a thickness of the cathode gas diffusion layer.
摘要:
A compressor includes at least one cell that includes an electrolyte membrane, an anode located on one main surface of the electrolyte membrane, and a cathode located on the other main surface of the electrolyte membrane; a metallic anode separator located on the anode; a cathode separator located on the cathode; and a voltage application unit for applying a voltage between the anode and the cathode, wherein the compressor causes, by using the voltage applier to apply a voltage, a proton extracted from an anode fluid supplied to the anode to move to the cathode and generates compressed hydrogen, and the compressor includes a controller for causing the voltage application unit to apply the voltage such that a voltage applied per unit cell is lower than a corrosion potential of the metallic anode separator.