Abstract: To improve peelability of a base sheet regardless of a type of the base sheet. A transfer sheet (50A, 50B) in which a transfer layer (52) is laminated on a base sheet (51) includes a plurality of gas occlusion bodies (60) in a surface of or inside the transfer layer (52). The gas occlusion bodies (60) store gas therein and release the stored gas when energy is applied.

Abstract: To provide a battery or a membrane electrode assembly having high durability. A battery (100) having a multilayer structure containing layers of a pair of electrodes (1), the battery (100) including a reinforcing material (20) provided in one or more layers or between layers.

Abstract: [Problem] To provide a separator excellent in corrosion resistance and a sealing property for a fuel gas. [Means for Resolution] Provided is a separator (4) for fuel cells. The separator (4) includes a conductive substrate (41), and a protective layer (42) that covers at least a part of a surface of the substrate (41). The protective layer (42) contains a self-restoring material.

Abstract: To provide a battery or a membrane electrode assembly having high durability. A battery (100) having a multilayer structure containing layers of a pair of electrodes (1) , the battery (100) including a reinforcing material (20) provided in one or more layers or between layers.

Abstract: To recover materials forming a fuel cell stack by an easy method.

Abstract: A polyurea electrolyte includes a polyurea resin formed by a polymerization of a first compound having two or more isocyanate groups and a second compound having two or more amino groups. The first compound or the second compound contains ten or more carbon chains, and the first compound or the second compound contains a sulfonic acid group or a carboxylic acid group. A method for manufacturing the polyurea electrolyte includes neutralizing the sulfonic acid group or the carboxylic acid group in the first compound or the second compound by a neutralizing agent; after the neutralizing, polymerizing the first compound and the second compound; and after the polymerizing, removing the neutralizing agent from a polymer of the first compound and the second compound.

Abstract: A polyurea electrolyte includes a polyurea resin formed by a polymerization of a first compound having two or more isocyanate groups and a second compound having two or more amino groups. The first compound or the second compound contains ten or more carbon chains, and the first compound or the second compound contains a sulfonic acid group or a carboxylic acid group. A method for manufacturing the polyurea electrolyte includes neutralizing the sulfonic acid group or the carboxylic acid group in the first compound or the second compound by a neutralizing agent; after the neutralizing, polymerizing the first compound and the second compound; and after the polymerizing, removing the neutralizing agent from a polymer of the first compound and the second compound.