Abstract: A membrane-electrode assembly for a solid polymer electrolyte fuel cell includes a proton-conductive composite membrane including a reinforcing sheet and an electrolyte membrane. The reinforcing sheet has through-holes extending in a thickness direction of the reinforcing sheet. The through-holes are provided in a portion other than an edge of the reinforcing sheet in an in-plane direction. An anode electrode layer is provided on one surface of the proton-conductive composite membrane. A cathode electrode layer is provided on another surface of the proton-conductive composite membrane. At least one of an edge of the anode electrode layer and an edge of the cathode electrode layer in the in-plane direction is arranged outside in the in-plane direction with respect to the portion in which the plurality of through-holes are provided.

Abstract: A membrane-electrode assembly for a solid polymer electrolyte fuel cell includes a proton-conductive composite membrane including a reinforcing sheet and an electrolyte membrane. The reinforcing sheet has through-holes extending in a thickness direction of the reinforcing sheet. The through-holes are provided in a portion other than an edge of the reinforcing sheet in an in-plane direction. An anode electrode layer is provided on one surface of the proton-conductive composite membrane. A cathode electrode layer is provided on another surface of the proton-conductive composite membrane. At least one of an edge of the anode electrode layer and an edge of the cathode electrode layer in the in-plane direction is arranged outside in the in-plane direction with respect to the portion in which the plurality of through-holes are provided.

Abstract: An unactivated, poorly activatable hydrogen storage component and an activated hydrogen storage component are mixed to prepare a hydrogen storage material. When the hydrogen storage material is activated, the poorly activatable hydrogen storage component is converted to a hydrogen storable state in a remarkably short time. The poorly activatable hydrogen storage component may be a V—Cr—Ti hydrogen storage alloy having a body-centered cubic (BCC) crystal structure. The activated hydrogen storage component preferably is MgHx (0.1?x?2) doped with a nanoparticle of at least one atom selected from the group of Ni, Fe, Ti, Mn, and V.

Abstract: A fuel cell system having a fuel cell consuming the hydrogen stored in the high-pressure hydrogen tank as fuel gas, a hydrogen supply line connecting the high-pressure hydrogen tank to the fuel cell, a primary decompressing means provided on the hydrogen supply line, a secondary decompressing means provided in the downstream side of the primary decompressing means on the hydrogen supply line, a hydrogen storage alloy tank saving a hydrogen storage alloy and thermal-exchangeably connected to the fuel cell, a hydrogen pipe connected between the primary decompressing means and the secondary decompressing means, and supplied for hydrogen transfer between the hydrogen supply line and the hydrogen storage alloy tank is provided, and a controlling means for introducing the hydrogen of the first prescribed pressure into the hydrogen storage alloy tank from the hydrogen supply line through the hydrogen pipe during the warm-up of the fuel cell.

Abstract: A fuel cell hydrogen recovery system comprises a primary hydrogen absorbing tank adapted for storing hydrogen discharged from a fuel cell and a secondary hydrogen absorbing tank adapted for storing part of hydrogen that is supplied to the fuel cell. The primary hydrogen absorbing tank and the secondary hydrogen absorbing tank are provided so that heat can be exchanged therebetween. Part of hydrogen that is supplied to the fuel cell is supplied to the secondary hydrogen absorbing tank, so that the primary hydrogen absorbing tank is heated by hydrogen absorbing heat generated when hydrogen is absorbed therein, whereby hydrogen absorbed in the primary hydrogen absorbing tank can be re-supplied to the fuel cell.

Abstract: A fuel cell hydrogen recovery system comprises a primary hydrogen absorbing tank adapted for storing hydrogen discharged from a fuel cell and a secondary hydrogen absorbing tank adapted for storing part of hydrogen that is supplied to the fuel cell. The primary hydrogen absorbing tank and the secondary hydrogen absorbing tank are provided so that heat can be exchanged therebetween. Part of hydrogen that is supplied to the fuel cell is supplied to the secondary hydrogen absorbing tank, so that the primary hydrogen absorbing tank is heated by hydrogen absorbing heat generated when hydrogen is absorbed therein, whereby hydrogen absorbed in the primary hydrogen absorbing tank can be re-supplied to the fuel cell.

Abstract: A fuel cell system having a fuel cell consuming the hydrogen stored in the high-pressure hydrogen tank as fuel gas, a hydrogen supply line connecting the high-pressure hydrogen tank to the fuel cell, a primary decompressing means provided on the hydrogen supply line, a secondary decompressing means provided in the downstream side of the primary decompressing means on the hydrogen supply line, a hydrogen storage alloy tank saving a hydrogen storage alloy and thermal-exchangeably connected to the fuel cell, a hydrogen pipe connected between the primary decompressing means and the secondary decompressing means, and supplied for hydrogen transfer between the hydrogen supply line and the hydrogen storage alloy tank is provided, and a controlling means for introducing the hydrogen of the first prescribed pressure into the hydrogen storage alloy tank from the hydrogen supply line through the hydrogen pipe during the warm-up of the fuel cell.

Abstract: A fuel cell hydrogen recovery system comprises a primary hydrogen absorbing tank adapted for storing hydrogen discharged from a fuel cell and a secondary hydrogen absorbing tank adapted for storing part of hydrogen that is supplied to the fuel cell. The primary hydrogen absorbing tank and the secondary hydrogen absorbing tank are provided so that heat can be exchanged therebetween. Part of hydrogen that is supplied to the fuel cell is supplied to the secondary hydrogen absorbing tank, so that the primary hydrogen absorbing tank is heated by hydrogen absorbing heat generated when hydrogen is absorbed therein, whereby hydrogen absorbed in the primary hydrogen absorbing tank can be re-supplied to the fuel cell.