Abstract: The invention provides a proton-conducting electrolyte that has excellent proton-conducting properties, heat resistance, and chemical stability without containing any fluorine. The proton-conducting electrolyte contains polyamide sulfamidic acid in which a polyamide backbone has side chains of sulfamidic acid groups. The polyamide sulfamidic acid may be represented by the formula: where Ar1 and Ar2 are each an aromatic ring or a group containing an aromatic ring and n is the average degree of polymerization and is an integer between 100-300,000.

Abstract: The present invention is related to a proton conducting electrolyte having better proton conductivity, heat resistance and mechanical strength and a fuel cell using the same. More specifically, the proton conducting electrolyte of the present invention comprises a backbone polymer having a hard segment and a soft segment, and one or both of a side chain polymer having a proton dissociating group and a side chain polymer composed of a dendrimer.

Abstract: The present invention is relates to a proton conducting electrolyte comprising a novel polymer compound having a sulfonic acid group that is widely used in the industrial field. The polymer of the present invention may be prepared by a simple reaction scheme under mild conditions. Additionally, the present invention is related to a fuel cell using the proton conducting electrolyte of the present invention. The proton conducting electrolyte may comprise at least one polymer of polysulfonatealkoxyphenyleneoxide having a backbone of polyphenyleneoxide and a side chain of sulfonatealkoxy group.

Abstract: To render a polymer electrolyte fuel cell and a power-generating system with polymer electrolyte fuel cells, simple, compact and lightweight, the following measures are taken. A plurality of reactant-gas supplying separator are provided, each on at least one surface of each unit cell. Each reactant-gas supplying separator has fuel-gas supplying passages such as grooves in one surface, and oxidizer-gas supplying passages such as grooves in the other surface. Each unit cell comprises a catalyst layer and an electrically conductive, porous water-repellant layer provided at least between the catalyst layer and the grooves. The system comprises water-supplying means for supplying water in liquid state to a fuel-gas inlet section and a water-amount control means for controlling the amount of water to be supplied to the fuel-gas inlet section.

Abstract: A fuel cell system comprising a fuel cell stack and a fuel reformer for reforming a fuel and supplying a reformed fuel to the fuel cell stack, further comprising a total enthalpy heat exchanger for exchanging heat and moisture between a reacted gas and an unreacted gas from the fuel cell stack, a separator for separating moisture from the fuel gas fed from the fuel cell stack or from an oxidant gas, and a mixer for mixing part of the moisture separated by the separator with a medium having a freezing point of 0° C. or less.

Abstract: To generate electric energy to a load such as an electric car or the like, a fuel cell power generation system includes a fuel cell composed of a fuel electrode and an oxygen electrode with an electrolytic layer interposed therebetween so as to continuously supply electric power to the load, a secondary cell for supplying a required quantity of electric energy to the load at least during the initial time until the generation of electric energy is started with the fuel cell and a shifting unit serving to shift the power source of electric energy to the load from the fuel cell main body to the secondary cell or from the secondary cell to the fuel cell. An electrolytic layer constituting the fuel cell is composed of a film of high molecular material having ionic conductivity, and the secondary cell is a secondary lithium cell consisting of a nonaqueous solution based material or a solid electrolyte based material as an electrolyte.

Abstract: To generate electric energy to a load such as an electric car or the like, a fuel cell power generation system includes a fuel cell composed of a fuel electrode and an oxygen electrode with an electrolytic layer interposed therebetween so as to continuously supply electric power to the load, a secondary cell for supplying a required quantity of electric energy to the load at least during the initial time until the generation of electric energy is started with the fuel cell and a shifting unit serving to shift the power source of electric energy to the load from the fuel cell main body to the secondary cell or from the secondary cell to the fuel cell. An electrolytic layer constituting the fuel cell is composed of a film of high molecular material having ionic conductivity, and the secondary cell is a secondary lithium cell consisting of a nonaqueous solution based material or a solid electrolyte based material as an electrolyte.

Abstract: A fuel cell proper is constructed by superposing a plurality of unit cells having a solid polymer electrolyte membrane held between an anode and a cathode. This fuel cell proper is cooled with a liquid having a boiling point closely approximating the working temperature of the fuel cell. Water and a liquid fuel as liquid raw materials are gasified with a liquid raw material gasifying mechanism. This liquid raw material gasifying mechanism uses, as at least part of the heat source for gasification of water, the waste heat from the reformer and the heat possessed by the reformed gas. The gasified water and liquid fuel are reformed by the reformer into a hydrogen rich gas. The gas thus produced is supplied to the anode in the fuel cell proper. The cathodes are supplied with air to effect a reaction for power generation.