Abstract: Disclosed is a fuel for fuel cells which contains at least one organic compound selected from the group consisting of methanol, ethanol, dimethyl ether and formic acid, and 1-200 ppm of a hydrocarbon compound in terms of a single component as determined by gas chromatography mass spectrometry. Also disclosed are a fuel cartridge for fuel cells and a fuel cell.

Abstract: A fuel cell includes a cathode catalyst layer, an anode catalyst layer, a proton-conductive membrane provided between the cathode catalyst layer and the anode catalyst layer, and a fuel transmitting layer that supplies a vaporized component of a liquid fuel to the anode catalyst layer. Water generated in the cathode catalyst layer is supplied to the anode catalyst layer via the proton-conductive membrane. The liquid fuel is one of a methanol aqueous solution having a concentration of over 50% by molar and liquid methanol.

Abstract: According to one embodiment, a fuel cell includes a plurality of planar membrane electrode assemblies each produced by integrating a fuel electrode, an oxidizer electrode and an electrolyte membrane sandwiched between the fuel electrode and the oxidizer electrode, and a polyhedral package frame having plural planes which are disposed in a non-planar arrangement and support the plurality of membrane electrode assemblies so as to surround these membrane electrode assemblies.

Abstract: A fuel cell comprising a cathode catalyst layer, an anode catalyst layer including a conductive perfluoro-binder having a micellar structure formed by outwardly orienting hydrophilic groups and inwardly orienting hydrophobic (lipophilic) groups, and a proton conductive membrane provided between the cathode catalyst layer and the anode catalyst layer.

Abstract: Disclosed is a fuel for fuel cells which contains at least one organic compound selected from the group consisting of methanol, ethanol, dimethyl ether and formic acid, and 1-200 ppm of a hydrocarbon compound in terms of a single component as determined by gas chromatography mass spectrometry. Also disclosed are a fuel cartridge for fuel cells and a fuel cell.

Abstract: In an electronic device, state detection elements are arranged at various locations of a fuel cell system supplies an electric power to a phone unit, the state detection elements detect states of the fuel cell system at the locations. A cell state detection unit detects an operating state of the fuel cell from an output signal of each of the state detection elements. A determination unit determines an operating mode to prompt action to be taken for the operating state of the fuel cell detected by the cell state detection unit. A content of the operating mode is displayed with an image of a character or a fictitious creature based on a determination by the determination unit.

Abstract: The present invention provides a cartridge for a methanol fuel cell at low cost, which does not show deterioration in electric power generation performance, can be operated for a prolonged period of time, and can be reduced in size and weight. In the present invention, the cartridge for a methanol fuel cell has an inner resin layer containing a resin having such a property that, after a film of the resin is immersed in methanol at 60° C. for 7 days, the methanol is diluted twice in terms of a volume ratio with distilled water at room temperature to give a liquid, the liquid shows a light transmittance of 10% or higher at 300 nm.

Abstract: A fuel cell comprising a cathode catalyst layer, an anode catalyst layer including a conductive perfluoro-binder having a micellar structure formed by outwardly orienting hydrophobic (lipophilic) groups and inwardly orienting hydrophilic groups, and a proton conductive membrane provided between the cathode catalyst layer and the anode catalyst layer.

Abstract: A fuel cell comprising a cathode catalyst layer (2) containing a cathode catalyst particle and a proton conductive resin, an anode catalyst layer (3) and a proton conductive membrane (6) provided between the cathode catalyst layer (2) and the anode catalyst layer (3), wherein a content of the cathode catalyst particle in the cathode catalyst layer (2) is substantially the same on a first surface facing the proton conductive membrane (6) and on a second surface opposite to the first surface, and a content of the proton conductive resin in the cathode catalyst layer (2) is increased with an increase in distance from the second surface toward the first surface.

Abstract: A fuel cartridge for a fuel cell, includes a fuel receiving container and liquid fuel to be received in the container, wherein the liquid fuel contains at least one type selected from the group consisting of methanol, ethanol and dimethyl ether and at least one organic compound selected from the group consisting of formic acid, formaldehyde, methyl formate, ethyl formate, methyl acetate and ethyl acetate, and a concentration of the organic compound is 40 ppm or more and 1500 ppm or less.

Abstract: The present invention provides a fuel cell comprising: a cathode catalyst layer 2; an anode catalyst layer 3; a proton conductive membrane 6 disposed between the cathode catalyst layer 2 and the anode catalyst layer 3; a liquid fuel tank 9 for storing a liquid fuel L; a fuel vaporizing layer 10 for supplying a vaporized component of the liquid fuel L to the anode catalyst layer 3; a surface layer 15 having an air intake port 14 for supplying an air to the cathode catalyst layer 2; and a moisture retention plate 13A, disposed between the surface layer 15 and the cathode catalyst layer 2, for preventing water generated at the cathode catalyst layer from being evaporated, wherein the moisture retention plate is composed of a laminated body comprising at least two kind of porous members 13a and 13b each having different moisture permeability (moisture retention property).

Abstract: A fuel cell comprising a cathode catalyst layer, an anode catalyst layer including a conductive perfluoro-binder having a micellar structure formed by outwardly orienting hydrophobic (lipophilic) groups and inwardly orienting hydrophilic groups, and a proton conductive membrane provided between the cathode catalyst layer and the anode catalyst layer.

Abstract: A fuel cell comprises a proton conductive membrane, an anode catalyst layer provided on one surface of the proton conductive membrane, and a cathode catalyst layer provided partly on another surface of the proton conductive membrane, wherein water generated in the cathode catalyst layer is supplied to the anode catalyst layer through the proton conductive membrane, and the fuel cell further comprises a water-diffusing portion which is provided on the another surface of the proton conductive membrane and is in contact with the cathode catalyst layer.

Abstract: A fuel cell comprising a cathode catalyst layer, an anode catalyst layer including a conductive perfluoro-binder having a micellar structure formed by outwardly orienting hydrophilic groups and inwardly orienting hydrophobic (lipophilic) groups, and a proton conductive membrane provided between the cathode catalyst layer and the anode catalyst layer.

Abstract: A fuel cell includes a cathode catalyst layer, an anode catalyst layer, a proton-conductive membrane provided between the cathode catalyst layer and the anode catalyst layer, and a fuel transmitting layer that supplies a vaporized component of a liquid fuel to the anode catalyst layer. Water generated in the cathode catalyst layer is supplied to the anode catalyst layer via the proton-conductive membrane. The liquid fuel is one of a methanol aqueous solution having a concentration of over 50% by molar and liquid methanol.

Abstract: A secondary battery is comprising an organic electrolytic solution contained in a casing and, disposed therein, a positive electrode comprised of a lithium-containing composite metal oxide as a cathode active material and a negative electrode comprised of a carbonaceous material as an anode active material, wherein the positive and negative electrodes are separated through a separator disposed therebetween and wherein the organic electrolytic solution has a water content of from 5 ppm to 450 ppm.