78025 20190529115244.0 doi 10.1016/j.jpowsour.2012.07.094 sideral 81742 ART-2013-81742 eng (orcid)0000-0001-5973-4330 Eguizábal, A. On the incorporation of protic ionic liquids imbibed in large pore zeolites to polybenzimidazole membranes for high temperature proton exchange membrane fuel cells 2013 Access copy available to the general public Unrestricted Conducting fillers based on 2-hydromethyl) trimethylammoniun dimethyl phosphate (IL1), N,N-dimethyl-N-(2-hydroxyethyl) ammonium bis(trifluoromethanesulfonyl)imide (IL2) and 1-H-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (IL3) encapsulated in large pore zeolites (NH4BEA and NaY) have been added to the PBI casting solution for the preparation of high temperature proton exchange membranes (HTPEMs). The filler loading has been systematically varied from 3% to 20% wt. for all the studied composites. The morphological, physicochemical, and electrochemical properties of the as prepared hybrid doped PBI membranes have been fully characterized. For a given conduction filler, the optimum loading is found to be 3% wt. as inferred from the conductivity measurements at 0.05 water molar fraction. Among the tested, the outstanding electrolyte membranes are those containing IL3-NaY. The exhibited through-plane proton conductivity is 54 mS cm-1 at 200 °C for the optimum PBI + IL3-NaY_3%wt hybrid membrane. The so obtained results are explained by the assisted 1-H-3-methylimidazolium and bis(trifluoromethanesulfonyl)imide hydrogen bonding type interactions, clearly beneficial for the proton conduction processes. Moreover, the H2 permeability values for the hybrid electrolyte membranes and pure PBI are quite similar at the examined conditions; indicating the suitability of the preparation procedure in terms of fuel cross-over. The H+/H2 transport selectivity of the optimum IL3-NaY composite membrane clearly outperforms pure PBI and zeolite-PBI counterparts at 50°, 100° and 150 °C. Finally, the optimum composite membranes have been validated in H2/O2 single cell under non humidified conditions up to 180 °C as a “proof of concept” demonstration. info:eu-repo/grantAgreement/EC/FP7/209481/EU/NANOSTRUCTURED ELECTROLYTE MEMBRANES BASED ON POLYMER-IONIC LIQUIDS-ZEOLITE COMPOSITES FOR HIGH TEMPERATURE PEM FUEL CELL/ZEOCELL info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 5.211 2013 ENERGY & FUELS 8 / 83 = 0.096 2013 Q1 T1 ELECTROCHEMISTRY 2 / 27 = 0.074 2013 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-9048-5691 Lemus, J. (orcid)0000-0001-9897-6527 Pina, M. P. Universidad de Zaragoza 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 222 (2013), 483-492 J. power sources JOURNAL OF POWER SOURCES 0378-7753 234861 http://zaguan.unizar.es/record/78025/files/texto_completo.pdf Postprint 76004 http://zaguan.unizar.es/record/78025/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:78025 articulos driver 2019-05-29-11:44:46 ARTICLE