One embodiment provides a gas diffusion layer for a fuel cell constituting a unit cell of the fuel cell. The gas diffusion layer includes a base layer that includes short carbon fibers and has a reinforcing portion formed in a predetermined area thereof in a thickness direction with continuous…
Redox flow devices are described including a positive electrode current collector, a negative electrode current collector, and an ion-permeable membrane separating said positive and negative current collectors, positioned and arranged to define a positive electroactive zone and a negative…
Devices and methods for generating electricity in a direct carbon fuel cell are provided herein. The method includes heating and melting an alloy to obtain a liquid alloy anode; circulating the liquid alloy anode through a porous ceramic cathode, the cathode being a tubular structure and in…
A carbon substrate for a gas diffusion layer of a fuel cell, the carbon substrate being a porous carbon substrate having a first surface and a second surface opposite the first surface, the carbon substrate includes a plurality of carbon fibers arranged irregularly to form a non-woven type and a…
Disclosed are a carbon substrate for a gas diffusion layer of a fuel cell, a gas diffusion layer employing the same, an electrode for a fuel cell, a membrane electrode assembly for a fuel cell, and a fuel cell, wherein the carbon substrate includes a plate-shaped substrate having an upper surface…
A layered structure for a fuel cell comprises a carbon-based catalyst-free gas diffusion layer substrate and a carbon-based microporous layer, which is joined to the gas diffusion layer substrate and comprises a plurality of carbon carriers or carbon fibers embedded into an ion-conducting polymer…
An electrolyte membrane-electrode assembly comprises a polymer electrolyte membrane; a cathode catalyst layer and a cathode gas diffusion layer including a cathode micro porous layer and a cathode gas diffusion layer substrate, arranged in order on one side of the polymer electrolyte membrane, and…
A gas diffusion layer for a fuel cell includes a gas diffusion layer substrate and a microporous layer formed on the surface of the gas diffusion layer substrate. The microporous layer is formed into a sheet-like shape including a binder and a carbon material containing at least scale-like…
An object of the present invention is to provide a gas diffusion layer having gas flow passages formed at its one main surface, which is capable of achieving a further improvement in power generation performance. The fuel cell-use gas diffusion layer (14A, 14C) of the present invention has a…
In a fuel cell of the present invention, a gas diffusion layer (15A, 15C) provided on at least one surface side of a polymer electrolyte membrane (12) is structured with a conductive carbon sheet. Fluid flow passages (16A, 16C) are formed on the surface of the gas diffusion layer (15A, 15C)…
A gas diffusion layer for fuel cell of the present invention is structured with a porous member mainly comprised of conductive particles such as acetylene black, graphite and a polymer resin such as PTFE. This makes it possible to achieve both an improvement in power generation performance of the…
A gas diffusion layer (10) for a fuel cell includes a conductive microparticle layer (2) and a base material layer (1). The conductive microparticle layer (2) is formed with first pores (3) of no less than 0.5µm and no more than 50µm and second pores (4) of no less than 0.05µm and less than 0.5µm…
A fuel cell stack includes at least one electricity generating element that generates electrical energy through a reaction of fuel and oxygen, the electricity generating element including a membrane-electrode assembly, separators respectively positioned at both sides of the membrane-electrode…
A membrane electrode assembly (9) is formed by arranging a gas diffusion layer (3) for fuel made on the basis of electrically conductive fibers, a catalyst layer (5) for fuel, an electrolyte membrane (2), a catalyst layer (6) for oxidizing agent, and a gas diffusion layer (4) for oxidizing agent…
Contamination of the ion-exchange membrane in an electrochemical fuel cell can significantly reduce the lifetime. One source of contamination is from sealant materials, particularly if the sealant is silicone and impregnated into the peripheral region of the membrane electrode assembly (MEA) and…