Patents by Inventor Asmae MOKRINI
Asmae MOKRINI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230220568Abstract: A coated electrode assembly (CEA) comprising: i) a gas diffusion layer (GDE); and ii) a coating. The GDE comprises a gas diffusion layer (GDL) and a catalyst layer. The catalyst layer is disposed between the coating and the GDL. The catalyst layer comprises a hydrophobic polymer and/or an ionomeric polymer and the coating comprises a hydrophobic polymer and/or an ionomeric polymer. A method for making a CEA is provided. The CEA may have improved performance and stability compared to a membrane electrode assembly (MEA).Type: ApplicationFiled: May 10, 2021Publication date: July 13, 2023Inventors: RĂ©gis CHENITZ, Asmae MOKRINI, Jean-Yves HUOT
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Publication number: 20220344713Abstract: A biodegradable solid aqueous electrolyte composition, an electrochemical device incorporating the electrolyte composition, and methods for the same are provided. The electrolyte composition may include a hydrogel of a copolymer and a salt dispersed in the hydrogel. The copolymer may include at least two polycaprolactone chains attached to a polymeric center block. The electrochemical device may include an anode, a cathode, and the electrolyte composition disposed between the anode and the cathode. The electrolyte composition may include a crosslinked, biodegradable polymeric material that is radiatively curable prior to being crosslinked.Type: ApplicationFiled: August 19, 2020Publication date: October 27, 2022Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADAInventors: Naveen CHOPRA, Nan-Xing HU, Gregory McGUIRE, Robert BLACK, Alexis LAFORGUE, Edmond LAM, Chi Woon LEUNG, Yali LIU, Sophie REGNIER, Nathalie CHAPLEAU, Asmae MOKRINI
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Publication number: 20210143475Abstract: Provided is a solid polymer electrolyte (SPE) comprising a dissociable metal salt; a metal ion conductive polymer system; and a phosphonium salt having the general formula [PR1R2R3R4]X, where each of R1, R2, R3 and R4 are independently selected from C1 to C12 hydrocarbons, which hydrocarbons may be optionally substituted by 1 to 5 heteroatoms selected from N, O, and S, and X is an anion. Further provided are a method for preparing the solid polymer electrolyte and an electrochemical cell comprising the solid polymer electrolyte.Type: ApplicationFiled: March 9, 2018Publication date: May 13, 2021Applicant: National Research Council of CanadaInventors: Asmae Mokrini, Alexis Laforgue
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Patent number: 10336874Abstract: An ion exchange resin membrane or an ion exchange precursor resin membrane having a thickness of 25 microns or less and having an orientation ratio of 1.5 or less; which may be produced by co-extruding an ion exchange precursor resin with an incompatible polymer to form a multilayer film having a layer of the ion exchange precursor resin supported on a layer of the incompatible polymer. The layer of incompatible polymer is then removed from the layer of ion exchange precursor resin to provide the ion exchange precursor resin membrane. The ion exchange precursor resin membrane may be converted to an ion exchange resin membrane by hydrolysis, and subsequent acidification if desired.Type: GrantFiled: July 13, 2017Date of Patent: July 2, 2019Assignee: National Research Council of CanadaInventors: Asmae Mokrini, Francois Vachon, Jacques Dufour
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Patent number: 9941538Abstract: Disclosed is an ion exchange membrane comprising a film of a perfluorosulfonic acid ionomer in its acid form; the film having a low in-plane swelling, such that the length and/or width of the film changes by less than 10% when the membrane is exposed to water. Further disclosed is an electrochemical device, such as a polymer electrolyte membrane fuel cell, comprising an electrolyte comprising the ion exchange membrane.Type: GrantFiled: December 7, 2016Date of Patent: April 10, 2018Assignee: National Research Council of CanadaInventor: Asmae Mokrini
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Publication number: 20170369661Abstract: A process for producing an ion exchange precursor resin membrane involves co-extruding an ion exchange precursor resin with an incompatible polymer to form a multilayer film having a layer of the ion exchange precursor resin supported on a layer of the incompatible polymer. The layer of incompatible polymer is then removed from the layer of ion exchange precursor resin to provide the ion exchange precursor resin membrane. The ion exchange precursor resin membrane may be converted to an ion exchange resin membrane by hydrolysis, and subsequent acidification if desired. Ion exchange resin membranes and ion exchange precursor resin membranes having a uniform thickness of 25 microns or less may be formed by the process.Type: ApplicationFiled: July 13, 2017Publication date: December 28, 2017Applicant: NATIONAL RESEARCH COUNCIL OF CANADAInventors: Asmae MOKRINI, Francois VACHON, Jacques DUFOUR
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Publication number: 20170229726Abstract: A process for producing an ion exchange membrane involves melt-processing a mixture of a perfluorosulfonic acid ionomer in its acid form and a specific azole additive. The additive may be a triazole, alkyl triazole, vinyl triazole, fluoro-alkyl triazole, fluoro-vinyl triazole, pyrazole, alkyl pyrazole, vinyl pyrazole, fluoro-alkyl pyrazole, fluoro-vinyl pyrazole, benzimidazole, alkyl benzimidazole, vinyl benzimidazole, fluoro-alkyl benzimidazole, fluoro-vinyl benzimidazole or any mixture thereof to form a film having a thickness of from 3 to 200 microns. Ion exchange membranes so produced have reduced in-plane-swelling, improved dimensional stability and mechanical properties, and are useful as electrolytes in proton exchange membrane fuel cells.Type: ApplicationFiled: December 7, 2016Publication date: August 10, 2017Applicant: NATIONAL RESEARCH COUNCIL OF CANADAInventor: Asmae MOKRINI
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Patent number: 9725568Abstract: A process for producing an ion exchange precursor resin membrane involves co-extruding an ion exchange precursor resin with an incompatible polymer to form a multilayer film having a layer of the ion exchange precursor resin supported on a layer of the incompatible polymer. The layer of incompatible polymer is then removed from the layer of ion exchange precursor resin to provide the ion exchange precursor resin membrane. The ion exchange precursor resin membrane may be converted to an ion exchange resin membrane by hydrolysis, and subsequent acidification if desired. Ion exchange resin membranes and ion exchange precursor resin membranes having a uniform thickness of 25 microns or less may be formed by the process.Type: GrantFiled: December 19, 2012Date of Patent: August 8, 2017Assignee: National Research Council of CanadaInventors: Asmae Mokrini, Francois Vachon, Jacques Dufour
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Patent number: 9543607Abstract: A process for producing an ion exchange membrane involves melt-processing a mixture of a perfluorosulfonic acid ionomer in its acid form and a specific azole additive. The additive may be a triazole, alkyl triazole, vinyl triazole, fluoro-alkyl triazole, fluoro-vinyl triazole, pyrazole, alkyl pyrazole, vinyl pyrazole, fluoro-alkyl pyrazole, fluoro-vinyl pyrazole, benzimidazole, alkyl benzimidazole, vinyl benzimidazole, fluoro-alkyl benzimidazole, fluoro-vinyl benzimidazole or any mixture thereof to form a film having a thickness of from 3 to 200 microns. Ion exchange membranes so produced have reduced in-plane-swelling, improved dimensional stability and mechanical properties, and are useful as electrolytes in proton exchange membrane fuel cells.Type: GrantFiled: February 24, 2014Date of Patent: January 10, 2017Assignee: National Research Council of CanadaInventor: Asmae Mokrini
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Publication number: 20150004527Abstract: A process for producing an ion exchange precursor resin membrane involves co-extruding an ion exchange precursor resin with an incompatible polymer to form a multilayer film having a layer of the ion exchange precursor resin supported on a layer of the incompatible polymer. The layer of incompatible polymer is then removed from the layer of ion exchange precursor resin to provide the ion exchange precursor resin membrane. The ion exchange precursor resin membrane may be converted to an ion exchange resin membrane by hydrolysis, and subsequent acidification if desired. Ion exchange resin membranes and ion exchange precursor resin membranes having a uniform thickness of 25 microns or less may be formed by the process.Type: ApplicationFiled: December 19, 2012Publication date: January 1, 2015Inventors: Asmae Mokrini, Francois Vachon, Jacques Dufour
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Publication number: 20140242368Abstract: A process for producing an ion exchange membrane involves melt-processing a mixture of a perfluorosulfonic acid ionomer in its acid form and a specific azole additive. The additive may be a triazole, alkyl triazole, vinyl triazole, fluoro-alkyl triazole, fluoro-vinyl triazole, pyrazole, alkyl pyrazole, vinyl pyrazole, fluoro-alkyl pyrazole, fluoro-vinyl pyrazole, benzimidazole, alkyl benzimidazole, vinyl benzimidazole, fluoro-alkyl benzimidazole, fluoro-vinyl benzimidazole or any mixture thereof to form a film having a thickness of from 3 to 200 microns. Ion exchange membranes so produced have reduced in-plane-swelling, improved dimensional stability and mechanical properties, and are useful as electrolytes in proton exchange membrane fuel cells.Type: ApplicationFiled: February 24, 2014Publication date: August 28, 2014Applicant: National Research Council of CanadaInventor: Asmae MOKRINI