Abstract: The present invention provides fuel cell system to supply liquid fuel and air to a stack to thus cause reaction, thereby generating rated power. The fuel cell system includes a liquid fuel supply system, and an air-supply system. An air-supply rate being a volume of air supplied from the air-supply system per unit time, the air-supply rate of the air is set to a first air-supply rate upon start-up. The first air-supply rate is higher than the air-supply rate during the rated power generation.

Abstract: The fuel cell system of liquid fuel direct supply type includes an proton-conductive solid polymer film as an electrolyte, a cell part containing an anode and a cathode disposed to face each other with the proton-conductive solid polymer film intervening therebetween, a filter for removing metallic ions from a liquid fuel, a fuel supplying line for supplying the liquid fuel to the cell part through the filter, and an oxygen supplying line for supplying oxygen to the cell part, and the filter contains an inorganic ion exchange material.

Abstract: An electrode for a fuel cell, including a porous catalytic carrier including conductive fibers having two particle diameter distribution peaks of a first particle diameter distribution peak existing at a small particle diameter side and a second particle diameter distribution peak existing at a large particle diameter side, wherein said conducting fibers are carbon nano-fibers formed from a catalyst for formation prepared by preparing a mixed powder including one or more of a reducible metallic oxide powder and a non-reducible metallic oxide powder, mixing and pulverizing the mixed powder, and heating the mixed powder under reducing atmosphere; catalyst to be carried on said conductive fibers belonging to the first particle diameter distribution peak; and a proton conductive material adhered on surface of at least the conducive fibers belonging to the first particle diameter distribution peak, so as to come into contact with the catalyst.

Abstract: A liquid fuel cell device includes a liquid fuel cell body with a fuel electrode, an oxidizer electrode and an electrolyte layer between the electrodes, and a liquid fuel supply system supplying a liquid fuel to the fuel electrode. The fuel supply system includes a first tank configured to contain a concentration-adjusted liquid fuel and supply the concentration-adjusted liquid fuel to the fuel electrode, and a second tank configured to contain a high-concentration liquid fuel and supply the high-concentration liquid fuel to the first tank. The first tank includes an internal liquid transfer device configured to transfer the concentration-adjusted liquid fuel to the fuel electrode. The cell device further includes an external driving device provided outside the first tank and configured to drive the internal liquid transfer device. The external driving device is physically separated from the internal liquid transfer device.

Abstract: This invention provides a fuel cell catalyst including a carbon support containing at least one first element selected from the group consisting of B, N, and P, and catalyst particles supported on the carbon support, wherein the catalyst particles include at least one of platinum particles and alloy particles containing Pt and an element A, and the element A contains at least one element selected from the group consisting of platinum group elements and period 4 to 6 transition metal elements.

Abstract: The present invention provides fuel cell system to supply liquid fuel and air to a stack to thus cause reaction, thereby generating rated power. The fuel cell system includes a liquid fuel supply system, and an air-supply system. An air-supply rate being a volume of air supplied from the air-supply system per unit time, the air-supply rate of the air is set to a first air-supply rate upon start-up. The first air-supply rate is higher than the air-supply rate during the rated power generation.

Abstract: A fuel cell cartridge filled with liquid fuel includes a warning mechanism including a detector to detect a concentration of metal ions in the liquid fuel and a comparator to compare the concentration of metal ions with a predetermined value, and issuing a warning when the concentration of the metal ions exceeds the predetermined value.

Abstract: The fuel cell system of liquid fuel direct supply type includes an proton-conductive solid polymer film as an electrolyte, a cell part containing an anode and a cathode disposed to face each other with the proton-conductive solid polymer film intervening therebetween, a filter for removing metallic ions from a liquid fuel, a fuel supplying line for supplying the liquid fuel to the cell part through the filter, and an oxygen supplying line for supplying oxygen to the cell part, and the filter contains an inorganic ion exchange material.

Abstract: An anode for liquid fuel cell includes a current collector and a catalyst layer, in which the catalyst layer has a porosity in a range of 20 to 65%, and a volume of pores of which diameter ranges from 50 to 800 nm is 30% or more of a pore volume of the catalyst layer, the catalyst layer has a pore diameter distribution having a peak in a range of 100 to 800 nm, and the catalyst layer comprises fibrous supported catalysts and granular supported catalysts, the fibrous supported catalysts contain carbon nanofibers having a herringbone or platelet structure, and catalyst particles carried on the carbon nanofibers, and the granular supported catalysts contain carbon black particles and catalyst particles carried on the carbon black particles.

Abstract: A liquid fuel cell device includes a liquid fuel cell body including a fuel electrode, an oxidizer electrode and an electrolyte layer between the fuel and oxidizer electrodes, and a liquid fuel supply system supplying a liquid fuel to the fuel electrode. The fuel supply system includes a first tank configured to contain a concentration-adjusted liquid fuel and supply the concentration-adjusted liquid fuel to the fuel electrode, and a second tank configured to contain a high-concentration liquid fuel and supply the high-concentration liquid fuel to the first tank. The first tank includes a first internal liquid transfer device configured to transfer the concentration-adjusted liquid fuel to the fuel electrode. The cell device further includes a first external driving device provided outside the first tank and configured to drive the first internal liquid transfer device. The first external driving device is physically separated from the first internal liquid transfer device.

Abstract: This invention provides a fuel cell catalyst including a carbon support containing at least one first element selected from the group consisting of B, N, and P, and catalyst particles supported on the carbon support, wherein the catalyst particles include at least one of platinum particles and alloy particles containing Pt and an element A, and the element A contains at least one element selected from the group consisting of platinum group elements and period 4 to 6 transition metal elements.

Abstract: The present invention provides a electrode layer for fuel cells which is improved in the efficiency of a catalyst, the diffusion capability of fuel, the stabilization and the high output.

Abstract: Disclosed is a fuel cell in the form of stacked unit cells each having a power generating section composed of a fuel electrode, an oxidant electrode, and an electrolyte plate held therebetween, which are placed on top of the other. In this fuel cell, a liquid fuel is introduced into each unit cell by the capillary action and evaporated in each unit cell in a fuel evaporating portion, so that the fuel electrode is supplied with the evaporated fuel.

Abstract: The invention provides a fuel cell in which humidification control for maintaining adequate moisture in electrolyte membranes can be simplified. The fuel cell according to the invention is provided with a unit cell comprising a laminate of a plurality of power generation sections, each power generation section comprising a fuel electrode (anode), an oxidant electrode(cathode) and an electrolyte membrane interposed between the fuel electrode and the oxidant electrode(cathode), wherein the electrolyte membrane consists of a laminate comprising a film made of a proton-conducting organic compound, and a film made of a proton-conducting inorganic glass provided at least on the surface of the film of the proton-conducting organic compound facing the fuel electrode(anode).

Abstract: A binder layer is formed on a surface of ceramic powder. This ceramic powder is formed into a sheet to form a sheet for an electrolyte plate of a molten carbonate fuel cell, to which a carbonate electrolyte is impregnated, thereby an electrolyte plate is constituted.

Abstract: The carbon dioxide gas absorbent of the present invention exhibits a high carbon dioxide gas absorption performance from an initial stage of the use. The carbon dioxide gas absorbent comprises of primary particles each containing lithium zirconia serving as a matrix, and eutectic compound molecules each containing lithium carbonate and at least one element selected from the group consisting of alkali metals excluding lithium, and alkali earth metals, which are dispersed in the matrix.

Abstract: The carbon dioxide gas absorbent of the present invention exhibits a high carbon dioxide gas absorption performance from an initial stage of the use. The carbon dioxide gas absorbent comprises of primary particles each containing lithium zirconia serving as a matrix, and eutectic compound molecules each containing lithium carbonate and at least one element selected from the group consisting of alkali metals excluding lithium, and alkali earth metals, which are dispersed in the matrix.

Abstract: A molten carbonate fuel cell comprises a fuel electrode, an oxidizing agent electrode, and an electrolyte body prepared by impregnating a porous body including a retaining material and a reinforcing material with an electrolyte containing an alkali carbonate. The retaining material consists essentially of .alpha.-lithium aluminate (.alpha.-LiAlO.sub.2) having at most 0.60.degree. of a half value width of (104) peak in an X-ray powder diffractometry.

Abstract: The chemical reaction apparatus of the present invention can increase the producing rate of the main product gas by effectively removing carbon dioxide from the reaction site, the carbon dioxide generated together with the main product as the raw material gas is made to react at a high temperature of 400.degree. C. The reaction apparatus comprises a reactor for generating a main product gas and a byproduct gas which is carbon dioxide, by making a raw material gas to react, and lithium zirconate granular material placed in the reactor, to react with the byproduct carbon dioxide gas, thereby preparing a carbonate salt.

Abstract: A molten carbonate fuel cell of high performance and long life, which is capable of preventing the corrosion at the contacting portion between collector plates (in particular, an oxidizing gas-side collector plate) and the interconnector so as to suppress an increase of contact resistance.