Disclosed is a membrane-electrode assembly which can prevent the corrosion of a carbon-based carrier caused by reducing and/or stopping the supply of hydrogen gas, as well as platinum loss caused by such corrosion, without degrading the performance of a fuel cell, and thus can improve the reverse voltage durability of the fuel cell. Also disclosed are a method for manufacturing the membrane-electrode assembly, and a fuel cell including the membrane-electrode assembly. The membrane-electrode assembly according to the present invention includes: an electrolyte membrane having a first surface and a second surface opposite the first surface; an anode on the first surface; an OER catalyst layer on the first surface; and a cathode on the second surface, wherein the OER catalyst layer includes a catalyst for an oxygen-generating reaction, and at least a portion of the OER catalyst layer is disposed on the same layer as the anode.

Disclosed is a membrane-electrode assembly which can prevent the corrosion of a carbon-based carrier caused by reducing and/or stopping the supply of hydrogen gas, as well as platinum loss caused by such corrosion, without degrading the performance of a fuel cell, and thus can improve the reverse voltage durability of the fuel cell. Also disclosed are a method for manufacturing the membrane-electrode assembly, and a fuel cell including the membrane-electrode assembly. The membrane-electrode assembly according to the present invention includes: an electrolyte membrane having a first surface and a second surface opposite the first surface; an anode on the first surface; an OER catalyst layer on the first surface; and a cathode on the second surface, wherein the OER catalyst layer includes a catalyst for an oxygen-generating reaction, and at least a portion of the OER catalyst layer is disposed on the same layer as the anode.

The present disclosure relates to a tube-shaped catalyst complex and a catalyst slurry including the same for a fuel cell. The catalyst complex for a fuel cell comprises a tubular inner layer including an ionomer and an outer layer provided on an outer surface of the inner layer and including a catalyst.

An array includes a support substrate, surface structures protruding from a surface of the support substrate formed from or coated with a first material, a second material deposited on at least some of the surface structures such that the second material is in contact with the first material; and wherein the first material, the second material or the first and second material is conducting or semiconducting, and wherein the first and second material at least partially form a composite.

The present invention relates to a membrane electrode unit comprising a polymer membrane doped with a mineral acid as well as two electrodes, characterized in that the polymer membrane comprises at least one polymer with at least one nitrogen atom and at least one electrode comprises a catalyst which is formed from at least one precious metal and at least one metal less precious according to the electrochemical series.

The present invention relates to a method for producing a catalyst for an electrochemical cell, wherein: a graphited porous carbon material is treated with an oxygen-containing plasma or an aqueous medium containing an oxidising agent, at least one noble metal compound is deposited on the treated carbon material, the impregnated carbon material is brought into contact with a reducing agent such that the noble metal compound is reduced to a metallic noble metal.

A membrane-electrode assembly including a catalyst layer that includes a catalyst-supporting carrier in which a catalyst is supported on a carrier made of an inorganic oxide, and a highly hydrophobic substance having a higher degree of hydrophobicity than the inorganic oxide, the catalyst layer being formed on at least one surface of a polymer electrolyte membrane. It is preferable that, in the membrane-electrode assembly, the degree of hydrophobicity of the highly hydrophobic substance is from 0.5 vol % to 45 vol % at 25° C., the degree of hydrophobicity being defined as a concentration of methanol (vol %) when a light transmittance of a dispersion obtained by dispersing the highly hydrophobic substance in a mixed solution of water and methanol reaches 80%.

There is provided a catalyst layer for a fuel cell that can inhibit reduction in water electrolysis function. The catalyst layer for a fuel cell according to this disclosure comprises carbon supports on which Pt particles are supported, and Ir oxide particles, wherein the ratio of the mean primary particle size of the Ir oxide particles with respect to the mean primary particle size of the Pt particles is 20 or greater. The mean primary particle size of the Pt particles may be 20.0 nm or smaller and the mean primary particle size of the Ir oxide particles may be 100.0 nm to 500.0 nm.

There is provided a catalyst layer for a fuel cell that can inhibit reduction in water electrolysis function. The catalyst layer for a fuel cell according to this disclosure comprises carbon supports on which Pt particles are supported, and Ir oxide particles, wherein the ratio of the mean primary particle size of the Ir oxide particles with respect to the mean primary particle size of the Pt particles is 20 or greater. The mean primary particle size of the Pt particles may be 20.0 nm or smaller and the mean primary particle size of the Ir oxide particles may be 100.0 nm to 500.0 nm.

An energy conversion device for conversion of various energy forms into electricity. The energy forms may be chemical, photovoltaic or thermal gradients. The energy conversion device has a first and second electrode. A substrate is present that has a porous semiconductor or dielectric layer placed thereover. The substrate itself can be planar, two-dimensional, or three-dimensional, and possess internal and external surfaces. These substrates may be rigid, flexible and/or foldable. The porous semiconductor or dielectric layer can be a nano-engineered structure. A porous conductor material is placed on at least a portion of the porous semiconductor or dielectric layer such that at least some of the porous conductor material enters the nano-engineered structure of the porous semiconductor or dielectric layer, thereby forming an intertwining region.