摘要:
A fuel cell of the present invention includes a membrane-electrode assembly (10), an anode separator (20), and a cathode separator (30). The membrane-electrode assembly (10) includes: a polymer electrolyte membrane (1); a first anode catalyst layer (2A) and an anode gas diffusion layer (4) sequentially stacked on one of main surfaces of the polymer electrolyte membrane (1); a second anode catalyst layer (2B) disposed between the polymer electrolyte membrane (1) and the first anode catalyst layer (2A); and a cathode catalyst layer (3) and a cathode gas diffusion layer (5) sequentially stacked on the other main surface of the polymer electrolyte membrane (1). The second anode catalyst layer (2B) contains a catalyst which adsorbs a sulfur compound.
摘要:
A membrane membrane-reinforcement-member assembly, membrane catalyst-layer assembly, membrane electrode assembly, and polymer electrolyte fuel cell are provided, which are so configured as to ensure sufficient durability and a cost reduction in unit cells and be suited for mass production. To this end, a membrane membrane-reinforcement-member assembly (20) of a membrane catalyst-layer assembly (30) provided in an MEA (5) of a cell (100) has a polymer electrolyte membrane (1), a pair of first membrane reinforcement members (10a) and a pair of second membrane reinforcement members (10b) which members (10a), (10b) are embedded in the polymer electrolyte membrane (1) such that their main surfaces are not exposed therefrom. The first and second membrane reinforcement members (10a), (10b) are embedded in a parallelogrammatic fashion so as to overlap each other in the four corners of the polymer electrolyte membrane (1) when viewed in a thickness direction of the polymer electrolyte membrane.
摘要:
A membrane membrane-reinforcement-member assembly, membrane catalyst-layer assembly, membrane electrode assembly, and polymer electrolyte fuel cell are provided, which are so configured as to ensure sufficient durability and a cost reduction in unit cells and be suited for mass production. To this end, a membrane membrane-reinforcement-member assembly (20) of a membrane catalyst-layer assembly (30) provided in an MEA (5) of a cell (100) has a polymer electrolyte membrane (1), a pair of first membrane reinforcement members (10a) and a pair of second membrane reinforcement members (10b) which members (10a), (10b) are embedded in the polymer electrolyte membrane (1) such that their main surfaces are not exposed therefrom. The first and second membrane reinforcement members (10a), (10b) are embedded in a parallelogrammatic fashion so as to overlap each other in the four corners of the polymer electrolyte membrane (1) when viewed in a thickness direction of the polymer electrolyte membrane.
摘要:
A fuel cell system of the present invention includes: a polymer electrolyte fuel cell (1) including an MEA (12) having a polymer electrolyte membrane (13), an anode (16a) and a cathode (16b); a fuel gas supplying device (4) which supplies a fuel gas to the anode (16a); an oxidizing gas supplying device (5) which supplies an oxidizing gas to the cathode (16b); a moisture flow rate detector (2) which detects at least one of a flow rate of moisture discharged from the cathode (16b) and a flow rate of moisture discharged from the anode (16a); storage means (22) for storing a reference moisture flow rate that is the moisture flow rate at the time of a reference output of the polymer electrolyte fuel cell (1); and an anode oxidizer (25) which compares the moisture flow rate detected by the moisture flow rate detector (2) with the reference moisture flow rate stored in the storage means (22) and oxidizes the anode (16a) based on a result of the comparison.
摘要:
A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially quadrilateral shape; a membrane-like first membrane reinforcing member (10a) disposed on a first main surface (F10) of the polymer electrolyte membrane (1) to bend at a substantially right angle at a corner of the polymer electrolyte membrane (1) and extend along sides forming the corner; and a membrane-like second membrane reinforcing member (10b) disposed on a second main surface (F20) of the polymer electrolyte membrane (1) to bend at a substantially right angle at a corner of the polymer electrolyte membrane (1) and extend along sides forming the corner, and the first membrane reinforcing member (10a) and the second membrane reinforcing member (10b) are disposed to extend along four sides of the polymer electrolyte membrane (1) as a whole.
摘要:
A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially square shape; a pair of membrane-like first membrane reinforcing members (10a) disposed on one main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said one main surface; and a pair of membrane-like second membrane reinforcing members (10b) disposed on another main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said another main surface, wherein: portions of the polymer electrolyte membrane (1) at which portions the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed are concave; and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed such that main surfaces thereof are exposed, and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) surround a peripheral portion of the polymer electrolyte membrane (1) as a whole.
摘要:
A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially square shape; a pair of membrane-like first membrane reinforcing members (10a) disposed on one main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said one main surface; and a pair of membrane-like second membrane reinforcing members (10b) disposed on another main surface of the polymer electrolyte membrane (1) so as to extend along a pair of opposed sides, respectively, of four sides of said another main surface, wherein: portions of the polymer electrolyte membrane (1) at which portions the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed are concave; and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) are disposed such that main surfaces thereof are exposed, and the first membrane reinforcing members (10a, 10a) and the second membrane reinforcing members (10b, 10b) surround a peripheral portion of the polymer electrolyte membrane (1) as a whole.
摘要:
A polymer electrolyte fuel cell of the present invention comprises an electrolyte layer-electrode assembly (8), an anode separator (11) which is provided with a fuel gas channel (13), and a cathode separator (10) which is provided with an oxidizing gas channel (12), wherein low-level humidified reactant gases are supplied to a fuel gas channel (13) and to an oxidizing gas channel (12), respectively; and wherein a level of hydrophilicity of a section (hereinafter referred to as a cathode gas diffusion layer upstream section) of a cathode gas diffusion layer (3) which is opposite to an upstream region of the oxidizing gas channel (12) including a mostupstream region thereof is set lower than a level of hydrophilicity of a section (hereinafter referred to as anode gas diffusion layer upstream opposite section) of the anode gas diffusion layer (6) which is opposite to the cathode gas diffusion layer upstream section (3a) by making the level of hydrophilicity of an entire region of the anode gas diffusion layer upstream opposite section higher than the level of hydrophilicity of the cathode gas diffusion layer upstream section.
摘要:
A fuel cell of the present invention includes a membrane-electrode assembly (10), an anode separator (20), and a cathode separator (30). The membrane-electrode assembly (10) includes: a polymer electrolyte membrane (1); a first anode catalyst layer (2A) and an anode gas diffusion layer (4) sequentially stacked on one of main surfaces of the polymer electrolyte membrane (1); a second anode catalyst layer (2B) disposed between the polymer electrolyte membrane (1) and the first anode catalyst layer (2A); and a cathode catalyst layer (3) and a cathode gas diffusion layer (5) sequentially stacked on the other main surface of the polymer electrolyte membrane (1). The second anode catalyst layer (2B) contains a catalyst which adsorbs a sulfur compound.
摘要:
A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially quadrilateral shape; a membrane-like first membrane reinforcing member (10a) disposed on a first main surface (F10) of the polymer electrolyte membrane (1) to bend at a substantially right angle at a corner of the polymer electrolyte membrane (1) and extend along sides forming the corner; and a membrane-like second membrane reinforcing member (10b) disposed on a second main surface (F20) of the polymer electrolyte membrane (1) to bend at a substantially right angle at a corner of the polymer electrolyte membrane (1) and extend along sides forming the corner, and the first membrane reinforcing member (10a) and the second membrane reinforcing member (10b) are disposed to extend along four sides of the polymer electrolyte membrane (1) as a whole.