Abstract: A nanocarbon aggregate including a graphite aggregate including a graphene sheet having a petal shape and a nanohorn. The petal-shaped graphite aggregate achieves a reduction in the particulate size and a higher dispersibility by allowing the edge of the petal shape to locally absorb a metal, a metal complex and a metal oxide. The nanocarbon aggregate is used for a catalyst support.

Abstract: The present invention provides: a carbon nanohorn composite including a carbon nanohorn, a substance encapsulated in the carbon nanohorn, and a polyamine adsorbed by chemical reaction firmly to a surface functional group present on the opening part on the surface of the carbon nanohorn, wherein the release amount and release rate of the encapsulated substance can be controlled using the difference in size, substituent or three-dimensional structure of the polyamine, which is used as a plug; a method of controlling the release of the encapsulated substance; and a process for producing the carbon nanohorn composite. The release amount and release rate of the substance encapsulated in the carbon nanohorn composite is controlled by selecting a polyamine molecule, which plugs the opening part formed in the carbon nanohorn by oxidation, by its size, substituent or three-dimensional structure.

Abstract: A cap of polyamine molecules is provided on an aperture portion of carbon nanohorns having apertures formed by oxidation. The polyamine cap opens and closes according to the pH of the ambient environment, thereby controlling release of an encapsulation substance.

Abstract: An electrode sheet (489) is put in one side of a solid electrolyte membrane (114) at its cut portion. A base member (110) for an oxidant electrode side current collector electrode sheet (499) is placed at a location facing a base member (104) for the electrode sheet (489) formed on one face of the solid electrolyte membrane (114). In addition, the base member (104) for a fuel electrode side current collector electrode sheet (497) is placed at a location facing the base member (110) formed on the other face of the electrolyte film (114).

Abstract: In fuel cell (100), a metal fiber sheet is employed for a base member (104) and a base member (110) that composes a fuel electrode (102) and an oxidant electrode (108).

Abstract: A porous metal sheet (489) is used as an electrode substrate and the surface of a metal constituting the porous metal is roughened by etching. A plating layer of a catalyst (491) is formed on the surface on which irregularities are formed. This obtained electrode material is used as a fuel electrode (102) or an oxidizer electrode and these electrodes are bound with the solid electrolyte film (114).

Abstract: An electrode sheet (489) is put in one side of a solid electrolyte membrane (114) at its cut portion. A base member (110) for an oxidant electrode side current collector electrode sheet (499) is placed at a location facing a base member (104) for the electrode sheet (489) formed on one face of the solid electrolyte membrane (114). In addition, the base member (104) for a fuel electrode side current collector electrode sheet (497) is placed at a location facing the base member (110) formed on the other face of the electrolyte film (114).