摘要:
A metal separator for fuel cells formed with a metal plate and provided between cells accumulated, in which the metal plate is formed like trapezoidal irregularities to separate channels for a fuel gas from ones for an oxidant gas. Slope portions are formed after forming uniformly and thinly wall thickness of both upper and lower flat portions or either of the upper or the lower flat portion to 90% or less of that of the metal plate to be formed to obtain trapezoidal irregularities by forming flat portions which contact upper and lower cells and slope portions which interconnect the upper and the lower flat portions.
摘要:
A fuel cell having: a fuel electrode and an oxidant electrode disposed to sandwich a solid polymer electrolyte membrane; current collecting plates disposed outside of the fuel electrode and the oxidant electrode; a fuel electrode channel member disposed outside of the current collecting plate disposed outside of the fuel electrode; and an oxidant electrode channel member disposed outside of the current collecting plate disposed outside of the oxidant electrode. The oxidant electrode channel member has a thickness of not less than 1.2 mm. The fuel cell is a direct methanol type fuel cell.
摘要:
A fuel cell having: a fuel electrode and an oxidant electrode disposed to sandwich a solid polymer electrolyte membrane; current collecting plates disposed outside of the fuel electrode and the oxidant electrode; a fuel electrode channel member disposed outside of the current collecting plate disposed outside of the fuel electrode; and an oxidant electrode channel member disposed outside of the current collecting plate disposed outside of the oxidant electrode. The oxidant electrode channel member has a thickness of not less than 1.2 mm. The fuel cell is a direct methanol type fuel cell.
摘要:
A method of producing a Nb3Sn superconducting wire rod includes forming a wire rod comprising Nb, Sn and Cu, and having a mole ratio of the Sn expressed as ax+b(1−x), where 0.25≦x≦0.8, 0.3≦a≦0.4 and 0.02≦b≦0.1, and x and 1−x are prescribed as a mole ratio of the Nb and a mole ratio of the Cu, respectively, to a total of a mole number of the Nb and a mole number of the Cu, and heating the wire rod to produce Nb3Sn from the Sn and the Nb. By the heating of the wire rod, a Cu—Sn alloy is produced from the Sn and the Cu, concurrently with the Nb3Sn produced from the Sn and the Nb.
摘要:
A metal composite for fuel cells according to the present invention, which includes: a core of a metal; cladded layers of a corrosion resistant metal covering both surfaces of the core; and a through-hole formed through the core and cladded layers. The through-hole has, on a hole wall of the core region of the through-hole, a concave portion which is recessed relative to hole walls of the cladded layer regions of the through-hole.
摘要:
According to the present invention, there is provided a membrane electrode composite module including a membrane electrode composite formed by sandwiching both surfaces of an electrolyte membrane between gas diffusion electrodes, an anode current collecting plate having fuel flow holes through which fuel flows, and a cathode current collecting plate having oxygen flow holes through which oxygen flows, wherein both surfaces of the membrane electrode composite are sandwiched between the anode current collecting plate and the cathode current collecting plate, the membrane electrode composite module further including films made of a synthetic resin (a first film and a second film) which are a base of the anode current collecting plate and a base of the cathode current collecting plate.
摘要:
A metal separator for a fuel cell includes a plurality of flow passage grooves for flowing a fluid for operating the fuel cell; manifold holes provided on each side of an upper stream and a lower stream of the plurality of flow passage grooves and formed so as to penetrate a separator made of metal for the fuel cell; communication grooves formed on a separator surface of the separator, for connecting inlets/outlets of the plurality of flow passage grooves and the manifold holes to flow the fluid; a fluid flowing structure part made of metal, in which a through hole is formed on the separator surface that forms the communication grooves, formed in the vicinity of the manifold hole so as to traverse the communication groove; and a flat seal surface formed on the fluid flowing structure part, for sealing a surface of a member that shields an opening of the communication grooves in a state of a face contact.
摘要:
A current-collecting composite plate for a fuel cell configured with unit cells according to the present invention, which comprises: an insulator layer; and a plurality of pairs of conductor layers, the conductor layers being bonded to the insulator layer to be spaced apart from each other by a predetermined distance, each pair being used for adjacently disposed anode and cathode electrodes for a different one of the unit cells by sandwiching an electrolyte assembly therebetween. And, each conductor layer includes: a first conductor layer of a corrosion resistant metal treated with an electrically conductive surface treatment; a second conductor layer of a metal with low electrical resistivity; a through-hole penetrating the first conductor layer and the insulator layer; and a connecting portion formed of the second conductor layer for connecting the unit cells.
摘要:
Disclosed is a separator for fuel cells which is decreased in the amount of an expensive noble metal used as a raw material while being maintained to be conductive to the MEA. This separator has durability and corrosion resistance to very corrosive substances such as fluorine ions or hydrofluoric acid. Also disclosed is a method for producing such a separator for fuel cells. Specifically disclosed is a metal separator (15, 17) which is used in a polymer electrolyte fuel cell using a fluorine-containing polymer electrolyte membrane. This metal separator (15, 17) comprises a stainless steel base (20) processed to have a plurality of fuel gas channels (14). A pure Ti layer (21) is formed on the surface of the base (20); a Pd layer (23) is formed on a surface of the pure Ti layer (21) on the side of the fluorine-containing polymer electrolyte membrane; and a composite metal layer (22) is made of the pure Ti layer (21) and the Pd layer (23) by alloying at least a part of the Pd layer (23) joined with the surface of the pure Ti layer (21) through a heat treatment.
摘要:
According to the present invention, there is provided a membrane electrode composite module including a membrane electrode composite formed by sandwiching both surfaces of an electrolyte membrane between gas diffusion electrodes, an anode current collecting plate having fuel flow holes through which fuel flows, and a cathode current collecting plate having oxygen flow holes through which oxygen flows, wherein both surfaces of the membrane electrode composite are sandwiched between the anode current collecting plate and the cathode current collecting plate, the membrane electrode composite module further including films made of a synthetic resin (a first film and a second film) which are a base of the anode current collecting plate and a base of the cathode current collecting plate.