Provided is a polymer electrolyte membrane comprising: (a) a polyelectrolyte having an ion exchange capacity of from 0.5 to 3.0 meq/g; and (b) at least one scandium compound selected from the group consisting of scandium oxide, scandium acetate, scandium sulfate, scandium nitrate, and scandium carbonate, wherein a polyethylene glycol (PEG)-derived compound in the polymer electrolyte membrane has a total content of 10 ppm or less.

A method is proposed by means of which a composite layer is producible in as simple and controlled a manner as possible, and by means of which composite layers with different predetermined properties can be produced with as little expenditure as possible, and thus economically. The method includes: providing a nanofiber material, comminuting the nanofiber material while forming nanorods, providing a liquid medium, which comprises an ionomer component and a dispersant, dispersing the nanorods in the liquid medium while forming a nanorod ionomer dispersion, and applying the nanorod ionomer dispersion to a surface region of a substrate while forming a composite layer. An electrochemical unit including the composite layer is provided. The composite layer is useful in a fuel cell (hydrogen fuel cell or direct alcohol fuel cell), in a redox flow cell, in an electrolytic cell, or in an ion exchanger, and useful for anion or proton conduction.

Provided is a polymer electrolyte membrane comprising: (a) a polyelectrolyte having an ion exchange capacity of from 0.5 to 3.0 meq/g; and (b) at least one scandium compound selected from the group consisting of scandium oxide, scandium acetate, scandium sulfate, scandium nitrate, and scandium carbonate, wherein a polyethylene glycol (PEG)-derived compound in the polymer electrolyte membrane has a total content of 10 ppm or less.

Provided is a polymer electrolyte membrane comprising: (a) a polyelectrolyte having an ion exchange capacity of from 0.5 to 3.0 meq/g; and (b) at least one scandium compound selected from the group consisting of scandium oxide, scandium acetate, scandium sulfate, scandium nitrate, and scandium carbonate, wherein a polyethylene glycol (PEG)-derived compound in the polymer electrolyte membrane has a total content of 10 ppm or less.

The present invention relates to the manufacturing of metal organic framework (MOF) containing composite materials, particularly membranes. The inventive process comprises the steps of a phase inversion polymer formation containing pores of precursor materials and in situ formation of MOFs. The invention further relates to new MOF containing membranes; to the use of such membranes in gas separation processes and to devices comprising such membranes.

The present disclosure relates to an electrolyte membrane for fuel cells including a hydrogen peroxide generating catalyst and a hydrogen peroxide decomposing catalyst, the electrolyte membrane exhibiting highly improved durability, and a method of manufacturing the same. Specifically, the electrolyte membrane includes a support and a catalyst particle including a catalyst metal supported by the support, the catalyst metal including one selected from the group consisting of a first metal having catalyst activity to generate hydrogen peroxide, a second metal having catalyst activity to decompose hydrogen peroxide, and a combination thereof.

The present disclosure relates to an electrolyte membrane for fuel cells including a hydrogen peroxide generating catalyst and a hydrogen peroxide decomposing catalyst, the electrolyte membrane exhibiting highly improved durability, and a method of manufacturing the same. Specifically, the electrolyte membrane includes a support and a catalyst particle including a catalyst metal supported by the support, the catalyst metal including one selected from the group consisting of a first metal having catalyst activity to generate hydrogen peroxide, a second metal having catalyst activity to decompose hydrogen peroxide, and a combination thereof.

Disclosed are an additive for a polymer electrolyte membrane fuel cell and a polymer electrolyte membrane fuel cell including the additive. The additive may include a carbon material having a predetermined shape and a perovskite compound having the formula Ce(Zr.sub.xTi.sub.1-x)O.sub.3, wherein x satisfies 0<x<1, and wherein the perovskite compound is deposited on the carbon material.

A method of making an alkaline membrane fuel cell assembly is disclosed. The method may include: depositing a first catalyst layer on a first gas diffusion layer to form a first gas diffusion electrode; depositing a second catalyst layer one a second gas diffusion layer to form a second gas diffusion electrode; depositing a thin membrane on at least one of: the first catalyst layer and the second catalyst layer; joining together the first and second gas diffusion electrodes to form the alkaline fuel cell assembly such that the thin membrane is located between the first and second catalyst layers; and sealing the first and second gas diffusion layers, the first and second catalyst layers and the thin membrane from all sides.

Anion exchange membranes (AEMs) for separators in electrochemical devices and methods for making same are disclosed herein. AEMs include chloromethylated SEBS triblock copolymer functionalized with TRIS cations and chloromethylated QPEK-C functionalized with TMA cations. Composite AEMs further include metal oxide fillers. Reinforced AEMs and reinforced composite AEMs further include a reinforcement material base.