Constructing Straight Polyionic Liquid Microchannels for Fast Anhydrous Proton Transport

Kallem, P. ; Eguizabal, A. ; Mallada, R. (Universidad de Zaragoza) ; Pina, M. P. (Universidad de Zaragoza)

Resumen: Polymeric ionic liquids (PILs) have triggered great interest as all solid-state flexible electrolytes because of safety and superior thermal, chemical, and electrochemical stability. It is of great importance to fabricate highly conductive electrolyte membranes capable to operate above 120 °C under anhydrous conditions and in the absence of mineral acids, without sacrificing the mechanical behavior. Herein, the diminished dimensional and mechanical stability of poly1-(3H-imidazolium)ethylene]bis(trifluoromethanesulfonyl)imide has been improved thanks to its infiltration on a polybenzimidale (PBI) support with specific pore architecture. Our innovative solution is based on the synergic combination of an emerging class of materials and sustainable large-scale manufacturing techniques (UV polymerization and replication by microtransfer-molding). Following this approach, the PIL plays the proton conduction role, and the PBI microsieve (SPBI) mainly provides the mechanical reinforcement. Among the resulting electrolyte membranes, conductivity values above 50 mS·cm-1 at 200 °C and 10.0 MPa as tensile stress are shown by straight microchannels of poly1-(3H-imidazolium)ethylene]bis(trifluoromethanesulfonyl)imide cross-linked with 1% of dyvinylbenzene embedded in a PBI microsieve with well-defined porosity (36%) and pore diameter (17 µm).

Idioma: Inglés

DOI: 10.1021/acsami.6b13315

Año: 2016

Publicado en: ACS Applied Materials & Interfaces 8, 51 (2016), 35377-35389
ISSN: 1944-8244

Factor impacto JCR: 7.504 (2016)

Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 12 / 87 = 0.138 (2016) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 22 / 275 = 0.08 (2016) - Q1 - T1

Factor impacto SCIMAGO: 2.56 - Materials Science (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Medicine (miscellaneous) (Q1)

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)