US 2013/0260283 A1 · ORGANIC-INORGANIC HYBRID NANOFIBRES HAVING A MESOPOROUS INORGANIC PHASE, PREPARATION THEREOF BY ELECTROSPINNING, MEMBRANE, ELECTRODE, AND FUEL CELL

Organic-inorganic hybrid nanofibres having a mesoporous inorganic phase, preparation thereof by electrospinning, membrane, electrode, and fuel cell

AssigneesCentre National De La Recherche Scientifique, Commissariat A L'energie Atomique Et Aux Energies Alternatives, Universite Pierre Et Marie Curie (Paris 6)

InventorsKarine Valle, Philippe Belleville, Frank Pereira, Chrystel Laberty, Clément Sanchez, John Bass

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Abstract

Organic-inorganic hybrid nanofibres comprising two phases: a first mineral phase comprising a structured mesoporous network with open porosity; and a second organic phase comprising an organic polymer, wherein said organic phase is basically not present inside the pores of the structured mesoporous network. A membrane and an electrode comprising said nanofibres. A fuel cell comprising said membrane and/or said electrode. A method of preparing said nanofibres by electrically assisted extrusion (electrospinning).

Claims35

Dependent claims

Organic-inorganic hybrid nanofibres comprising two phases:

a first mineral phase comprising a structured mesoporous network with open porosity;
and
a second organic phase comprising an organic polymer, wherein said organic phase is not present inside the pores of the structured mesoporous network.

Nanofibres according to any one of the preceding claims, further comprising, preferably on at least one of their surfaces, and even more preferably on at least one of their external surfaces, catalytic nanoparticles, preferably metallic nanoparticles and/or metal oxide(s) nanoparticles.

Nanofibres according to any of the preceding claims, wherein the mineral phase consists of at least one oxide chosen from among the metal oxides, the oxides of metalloids, and the mixed oxides thereof, such as the oxides of silicon, titanium, zirconium, hafnium, aluminium, tantalum, tin, zinc, magnesium, rare earths or lanthanides such as europium, cerium, yttrium, lanthanum and gadolinium, and the mixed oxides thereof.

Nanofibres according to any one of the preceding claims, wherein the size of the pores of the mesoporous network is 1 to 100 nm, and preferably 2 to 50 nm.

Nanofibres according to any one of the preceding claims, wherein the organic polymer is a thermostable polymer preferably chosen from among the polyether ketones (PEK, PEEK, PEEKK);

the polysulfones (PSU);
the polyethersulfones;
the polyphenyl ether sulfones (PPSU);
the styrene/ethylene (SES), styrene/butadiene (SBS) and styrene/isoprene (SIS) copolymers;
the polyphenylenes, such as the poly(phenylene sulfides) and the poly(phenylene oxides);
the polyimidazoles, such as the polybenzimidazoles (PBI);
the polyimides (PI);
the polyamideimides (PAI);
the polyanilines;
the polypyrroles;
the polysulfonamides;
the polypyrazoles, such as the polybenzopyrazoles;
the polyoxazoles, such as the polybenzoxazoles;
the polyethers, such as the poly(tetramethylene oxides) and the poly(hexamethylene oxides);
the poly((meth)acrylic acids);
the polyacrylamides;
the polyvinyls, such as the poly(vinyl esters), for example the polyvinyl acetates, the polyvinyl formates, the polyvinyl propionates, the polyvinyl laurates, the polyvinyl palmitates, the polyvinyl stearates, the polyvinyl trimethylacetates, the polyvinyl chloroacetates, the polyvinyl trichloroacetates, the polyvinyl trifluoroacetates, the polyvinyl benzoates, the polyvinyl pivalates, the polyvinyl alcohols;
the acetal resins, such as the polyvinyl butyrals;
the polyvinyl pyridines;
the polyvinyl pyrrolidones;
the polyolefines, such as the polyethylenes, the polypropylenes, the polyisobutylenes;
the poly(styrene oxides);
the fluorinated resins and the polyperfluorocarbons, such as the polytetrafluoroethylenes (PTFE);
the poly(vinylidene fluorides) (PVDF);
the polychlorotrifluoroethylenes (PCTFE);
the polyhexafluoropropenes (HFP);
the perfluoroalkoxides (PFA);
the polyphosphazenes;
the silicone elastomers;
the block copolymers including at least one block consisting of a polymer chosen from among the above polymers.

27 more elements

Dependencies are inferred from the claim text.