Disclosed are an electrode for a fuel cell a membrane-electrode assembly including the same, and a method of preparing the same. The electrode may include catalyst particles; and a binder in which the catalyst particles are dispersed. In particular, the binder may include an ionomer having proton conductivity and a polymer of intrinsic microporosity (PIM) in order to implement high oxygen permeability.

The present disclosure is directed to raicroporous ladder polymers containing amine-functionalized monomer segments, amidoxime-functionalized monomer segments, or a combination thereof. Monomer compounds for preparation of the polymers are also described, as well as membranes and electrochemical cells containing the polymers.

A polymeric composition with fire resistant properties is provided. The polymeric composition comprises a continuous phase and a disperse phase distributed in the continuous phase. The continuous phase is prepared by first mixing at least furfuryl alcohol with at least one first phenol, and by second adding a catalyst. The disperse phase comprises particles that are at least in parts heat-expandable. Furthermore, a method for producing such a polymeric composition, a substrate coated with such a fire resistant polymeric composition and an apparatus for machine-coating substrates with such a polymeric composition are provided.

The present invention relates to a synthesis method for sulfate ester (amine) type linker polymer, which comprises a monomer containing hydroxyl or amino group and sulfuryl fluoride monomer proceeding a polycondensation reaction under a basic condition by one-pot process. As compared to the traditional polyester synthesis method, the present invention is economical; the reaction conditions are mild and easy to control, the reaction process is simple and easy to operate; the post-treatment process is simple with little environmental pollution, which is benificial to industrial production. In addition, the bisphenol type polysulfate ester compounds synthesized by the present invention have excellent mechanical performances, dielectric performances, tolerance performances, and abrasion resistance performances.

A polymer including a hydrophilic block and a hydrophobic block, wherein the hydrophilic block includes a unit derived from a compound represented by Chemical Formula 1, and the hydrophobic block includes a unit derived from a fluorine-containing compound, a polymer separator including the same, and a membrane electrode assembly, a fuel cell and a redox flow battery including the same.

The invention relates to a process for preparing unipolar cation-conducting ionomers from fluoro ionic monomers, to said unipolar cation-conducting ionomers, to the uses thereof, to an electrolytic composition comprising at least one of said unipolar cation-conducting ionomers and to an electrochemical device comprising at least one of said unipolar cation-conducting ionomers, especially as electrolyte.

The present invention provides compounds, especially polymeric compounds, having at least one imidazole and/or imidazolium structural unit, a process for preparation thereof and for the use thereof.

Embodiments described herein relate to compositions including iptycene-based structures. Some embodiments provide compositions including polymers having a backbone comprising an iptycene-based compound. Some embodiments described herein provide compositions having enhanced properties such as enhanced porosity, increased glass transition temperatures, and/or improved solubility as compared to traditional poly(aryl ether)-based compounds or traditional iptycene-based compounds. In some cases, the compositions may include various aryl ether compounds such as an aryl ether ketone incorporated into the polymer backbone. Non-limiting examples of suitable aryl ether compounds include polyaylethersulfones, polyaryletherketones, polyetherimides, and polyphenylene ethers. The compositions described herein may be useful in a wide variety of applications, including structural materials, flexible composites, ion conductors, fuel cell membranes such as proton exchanging membranes, sensors, preconcentrators, absorbents, or the like.

A cation-conducting polymer has two or more repeating units of the following formula ##STR00001##
Owing to the cation-conducting polymer has good physicochemical properties, hydrolytic stability and conductivity, a film formed by coating the liquid cation-conducting polymer can be used as proton exchange membrane to apply in fuel cell system.

To provide a highly heat resistant flame retardant.

A polymer having repeating units represented by the following formula (1), which has a weight average molecular weight as calculated as standard polystyrene of at least 6,000:

##STR00001##

wherein R is a C.sub.1-6 alkylene group, S or SO.sub.2.