Systems, methods, and membranes involving ion exchange membranes are disclosed. In an embodiment of the present invention, an ultrathin laminar layer made of inorganic nanosheets may be coated on one side or both sides of a polymeric anion exchange membrane (AEM), forming a composite AEM. Oxidation stability measurements may indicate that composite AEM provide superior oxidation resistance to exemplary polymeric AEMs and to commercial polymeric AEMs.

Systems, methods, and membranes involving ion exchange membranes are disclosed. In an embodiment of the present invention, an ultrathin laminar layer made of inorganic nanosheets may be coated on one side or both sides of a polymeric anion exchange membrane (AEM), forming a composite AEM. Oxidation stability measurements may indicate that composite AEM provide superior oxidation resistance to exemplary polymeric AEMs and to commercial polymeric AEMs.

The present invention relates to a composite material comprising a porous solid matrix having interconnected channels, said matrix comprising sulfonate groups on at least a part of the surface of said channels, wherein a sulfonate group is in ionic interaction with a quaternary ammonium of a polymerizable molecule. The present invention also relates to a method for preparing such a composite material and applications thereof.

An article is provided that includes a substrate, a silicon containing layer on the substrate, and a layer including metallic Pt on the silicon containing layer. The silicon containing layer is a diamond-like glass layer. Optionally, the substrate is a porous membrane. In some cases, the silicon containing layer is a continuous layer.

An article is provided that includes a substrate, a silicon containing layer on the substrate, and a layer including metallic Pt on the silicon containing layer. The silicon containing layer is a diamond-like glass layer. Optionally, the substrate is a porous membrane. In some cases, the silicon containing layer is a continuous layer.

The present invention relates to the field of hydrogen energy, and more particularly to an anion-conducting polyelectrolyte comprising an amide group, a preparation method and application thereof. The method includes: polymerizing aromatic hydrocarbons and ketone comprising amide group by superacid catalysis, forming a membrane by a casting method, performing the membrane prepared under alkaline conditions to obtain the anion-conducting polyelectrolytes comprising amide group. The anion-conducting polyelectrolytes obtained have good solubility and excellent stability. It is a kind of high molecular polymer with excellent alkali stability with an amide structure on the backbone. After alkaline treatment, the polymer not only has high hydroxide conductivity, good mechanical properties, and thermal stability but also has excellent alkali stability and excellent performance of water electrolysis.

The present invention relates to the field of hydrogen energy, and more particularly to an anion-conducting polyelectrolyte comprising an amide group, a preparation method and application thereof. The method includes: polymerizing aromatic hydrocarbons and ketone comprising amide group by superacid catalysis, forming a membrane by a casting method, performing the membrane prepared under alkaline conditions to obtain the anion-conducting polyelectrolytes comprising amide group. The anion-conducting polyelectrolytes obtained have good solubility and excellent stability. It is a kind of high molecular polymer with excellent alkali stability with an amide structure on the backbone. After alkaline treatment, the polymer not only has high hydroxide conductivity, good mechanical properties, and thermal stability but also has excellent alkali stability and excellent performance of water electrolysis.

Provided are an ion exchange membrane that has excellent mechanical strength as well as can exhibit an excellent proton conductivity over a long period, a membrane electrode assembly, a fuel cell, a redox flow secondary battery, a water electrolyzer, and an electrolyzer for organic hydride synthesis.

An ion exchange membrane containing:

an electrolyte containing a perfluorocarbon sulfonic acid polymer; and

glass fiber having a SiO.sub.2 content of 99.9% by mass or more.

Provided are an ion exchange membrane that has excellent mechanical strength as well as can exhibit an excellent proton conductivity over a long period, a membrane electrode assembly, a fuel cell, a redox flow secondary battery, a water electrolyzer, and an electrolyzer for organic hydride synthesis.

An ion exchange membrane containing:

an electrolyte containing a perfluorocarbon sulfonic acid polymer; and

glass fiber having a SiO.sub.2 content of 99.9% by mass or more.

A catalyst-coated membrane (CCM) for use in a water electrolyser, having a laminate structure comprising: a first layer comprising a first membrane component having a cathode catalyst layer disposed on a first face thereof; a second layer comprising a second membrane component having an anode catalyst layer disposed on a first face thereof; and an intermediate layer disposed between the first and second layers, comprising a third membrane component having a recombination catalyst layer disposed on a first face thereof is disclosed. The CCM is useful within a water electrolyser. The recombination catalyst layer reduces the risk associated with hydrogen crossover and allows thinner membranes with lower resistance to be used.