Bipolar membranes (BPMs) comprising a cation exchange layer (CEL) and an anion exchange layer (AEL) wherein the colour properties of the CEL are visibly different to the colour properties of the AEL. The CEL and the AEL are easily distinguishable so that a stack of membranes comprising the BPMs can be built fast and without mistakes in layer order.

An ion exchange membrane includes nanoparticulate hydrous manganese oxide, wherein, the ion exchangemembrane is selective for the passage of phosphate ion. Methods of preparing ion exchange membranes and methods of seprating phosate also are described.

A monolayer membrane containing gelling polymer particles having at least one of a basic functional group and an acidic functional group, and having a thickness of less than 5 μm. A composite having a porous carrier and gelling polymer particles having at least any one of a basic functional group and an acidic functional group and filling up the surface pores of the porous carrier. The invention can provide a novel material capable of efficiently separating an acid gas from a mixed gas.

Ion conductive organic-inorganic composite particles are particles that have an organic group on the surface of inorganic particles and have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group, the organic group containing an ion conductive group.

The present invention provides an adhesive film hardly suffering from fisheyes and deposition of dirt and dusts thereonto and having excellent mechanical strength and heat resistance as well as good adhesion properties, which can be suitably used as various surface protective films, etc. The present invention relates to an adhesive film comprising a polyester film and an adhesive layer formed on at least one surface of the polyester film, in which the adhesive layer comprises a resin having a glass transition point of not higher than 0° C., and an antistatic agent, and a thickness of the adhesive layer is not more than 10 μm.

Embodiments of the present invention provide for anion exchange membranes and processes for their manufacture. The anion exchange membranes described herein are made the polymerization product of at least one functional monomer comprising a tertiary amine which is reacted with a quaternizing agent in the polymerization process.

Disclosed are a polymer electrolyte membrane showing high ion conductivity even under the condition of low humidity and high temperature and a method for manufacturing the same. The polymer electrolyte membrane of the present invention comprises a porous substrate, a self proton conducting material dispersed in the porous substrate, and an ion conductor impregnated in the porous substrate. The self proton conducting material comprises an inorganic particle functionalized with an azole ring.

A monolayer membrane containing gelling polymer particles having at least one of a basic functional group and an acidic functional group, and having a thickness of less than 5 μm. A composite having a porous carrier and gelling polymer particles having at least any one of a basic functional group and an acidic functional group and filling up the surface pores of the porous carrier. The invention can provide a novel material capable of efficiently separating an acid gas from a mixed gas.

A fuel cell includes: a membrane-electrode-gas diffusion layer assembly; a separator positioned in one side with respect to the membrane-electrode-gas diffusion layer assembly; a frame member supporting the membrane-electrode-gas diffusion layer assembly and joined to the separator, wherein the frame member includes: a base layer; an adhesive layer having thermoplasticity, having a linear expansion coefficient greater than that of the base layer, and joining the base layer and the separator; and a coating, layer provided on a side, opposite to the adhesive layer, of the base layer, having a liner expansion coefficient greater than that of the base layer, and not containing an adhesive component.

The present disclosure is directed an ion exchange membrane that has an increased affinity for a specific ionic species. The ion exchange membranes disclosed herein include ionophores that can increase ion-selectivity. These ion exchange membranes can be incorporated to various ion-exchange systems or devices that can selectively separate ions of value.