Breton Spa

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Eni S.p.a.

Cryvet S.r.l.

Universitá Degli Studi Di Padova

Strumenti Scientifici Cinel S.r.l.

Vito Di Noto

Enrico Negro

Fabio Bassetto

Mauro Bettiol

Federico Bertasi

Nicola Boaretto

Sandra Lavina

Giuseppe Pace

Luca Toncelli

Chiara Gambaro

Matteo Piga

Keti Vezzu'

Graeme Nawn

Chuanyu Sun

Stefano Zeggio

Keti Vezzu′

Gualtiero Valeri

Laura Meda

Sergio Bongiovanni

Marco Cagliari

Enrico Bongiovanni

Aldo Bongiovanni

A zipped ion-exchange membrane (Z-IEM) having at least one cation-exchange polyelectrolyte (CEP) crosslinked with at least one anion-exchange polyelectrolyte (AEP), wherein the CEP has a molar fraction of positive charges (x) so that: (i) when x=0.5, the Z-IEM is a completely neutralized ion-exchange membrane; (ii) when x>0.5, the Z-IEM is a cation-conducting ion-exchange membrane; (iii) when x<0.5, the Z-IEM is an anion-conducting ion-exchange membrane. The above zipped ion-exchange membrane (Z-IEM): (i) is based on a polymeric matrix; (ii) is endowed with a high conductivity for ionic species such as either HO, OHor halides such as F, Cl, Br, and I; and (iii) is able to block as much as possible the crossover of other ionic species, such as: cations such as V, V, VO, VO, Fe, Fe, Cr, Cr, Ce, Ce, Ti, Ti, Mn, Mn, Zn, Pb, Np, Np, NpO, NpO, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba; and anions such as F, BF, Cl, ClO, ClO, ClO, ClO, Br, Br, I, I.

Zipped ion-exchange membrane

The invention relates to electrocatalysts comprising a carbonitride (CN) shell featuring good electrical conductivity, coordinating suitable catalytically active sites. In a preferred aspect of the invention, the aforesaid carbonitride shell coordinates nanoparticles or aggregates of nanoparticles, on which the active sites of the electrocatalyst are located. In a preferred form of the invention, said carbonitride shell covers suitable cores with good electrical conductivity. Said electrocatalysts are obtained through a process involving the pyrolysis of suitable precursors; in one aspect of the invention, the preparation process requires certain further steps. In one preferred aspect, the steps comprise one or more of the following: chemical treatments; electrochemical treatments; further pyrolysis processes.

Electrocatalysts on carbonitride matrices

The use of particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm and a fluorine content of between 0.5 and 30% by weight, preferably between 0.5 and 5%, even more preferably between 1.0 and 4%, for the preparation of solid-state electrolytes, is described. Also described is a solid-state electrolyte, containing particles of at least one crystalline oxide, preferably metal oxide, having an average particle size of less than 500 nm, preferably between 10 and 500 nm, even more preferably between 50 and 300 nm; a fluorine content as noted above; an alkali or alkaline-earth metal content of between 0.5 and 10% by weight, preferably between 0.5 and 5%, even more preferably between 1 and 4%. Furthermore an inorganic-organic hybrid electrolyte obtainable by means of reaction of the aforementioned solid-state electrolyte with ionic liquids is described.

Solid-state electrolytes based on fluorine-doped oxides

Hybrid membranes based on crystalline titanium dioxide containing fluorine atoms within the crystalline lattice comprising atoms of titanium and oxygen are described; these hybrid membranes are particularly suitable for the production of fuel cells and electrolysers. A process for producing the aforesaid hybrid membranes is also described.

Hybrid membranes containing titanium dioxide doped with fluorine

Hybrid membranes based on crystalline titanium dioxide containing fluorine atoms within the crystalline lattice comprising atoms of titanium and oxygen are described; these hybrid membranes are particularly suitable for the production of fuel cells and electrolyzers. A process for producing the aforesaid hybrid membranes is also described.

The invention describes the preparation of electrocatalysts, both anodic (aimed at the oxidation of the fuel) and cathodic (aimed at the reduction of the oxygen), based on mono- and plurimetallic carbon nitrides to be used in PEFC (Polymer electrolyte membrane fuel cells), DMFC (Direct methanol fuel cells) and Helectrogenerators. The target of the invention is to obtain materials featuring a controlled metal composition based on carbon nitride clusters or on carbon nitride clusters supported on oxide-based ceramic materials. The preparation protocol consists of three steps. In the first the precursor is obtained through reactions of the type: a) sol-gel; b) gel-plastic; c) coagulation-flocculation-precipitation.

Electrocatalysts based on mono/plurimetallic carbon nitrides for fuel cells fueled with hydrogen

The invention describes the preparation of electrocatalysts, both anodic (aimed at the oxidation of the fuel) and cathodic (aimed at the reduction of the oxygen), based on mono- and plurimetallic carbon nitrides to be used in PEFC (Polymer electrolyte membrane fuel cells), DMFC (Direct methanol fuel cells) and Helectrogenerators. The target of the invention is to obtain materials featuring a controlled metal composition based on carbon nitride clusters or on carbon nitride clusters supported on oxide-based ceramic materials. The preparation protocol consists of three steps. In the first the precursor is obtained through reactions of the type: a) sol-gel; b) gel-plastic; c) coagulation-flocculation-precipitation. The second step consists of the thermal treatments to decompose the precursors in an inert atmosphere leading to the production of the carbon nitrides. In the last step the chemical and electro-chemical activation of the electrocatalysts is performed. Precursors are obtained through reactions leading to: a) the complexation of a 'soft' transition metal with a coordination complex acting as a ligand to obtain clusters; b) 3-D networking of the resulting clusters through suitable organic molecules and/or macromolecules.

A polymeric material with antistatic properties, characterised by comprising a dispersion of ions within a polymeric matrix containing heteroatoms.

Polymeric material with antistatic properties and method for obtaining it

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