The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2025
Filed:
Jul. 30, 2020
Eni S.p.a., Rome, IT;
Chiara Gambaro, Novara, IT;
Laura Meda, Novara, IT;
Vito Di Noto, Cadoneghe, IT;
Keti Vezzu', Padua, IT;
Chuanyu Sun, Padua, IT;
ENI S.P.A., Rome, IT;
Abstract
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.