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Article

Proton Conductive Zr-Phosphonate UPG-1—Aminoacid Insertion as Proton Carrier Stabilizer

1
Advanced Porous Materials Unit (APMU), IMDEA Energy, Avda. Ramón de la Sagra 3, E-28935 Móstoles, Madrid, Spain
2
ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France
3
Department of Materials Science and Engineering and Chemical Engineering, Universidad Carlos III de Madrid, Avda. Universidad 30, E-28911 Leganés, Madrid, Spain
*
Authors to whom correspondence should be addressed.
Received: 2 July 2020 / Revised: 30 July 2020 / Accepted: 31 July 2020 / Published: 31 July 2020
(This article belongs to the Special Issue Functional Metal-Organic Framework Based Materials)
Proton exchange membrane fuel cells (PEMFCs) are an attractive green technology for energy generation. The poor stability and performances under working conditions of the current electrolytes are their major drawbacks. Metal-Organic Frameworks (MOFs) have recently emerged as an alternative to overcome these issues. Here, we propose a robust Zr-phosphonate MOF (UPG-1) bearing labile protons able to act a priori as an efficient electrolyte in PEMFCs. Further, in an attempt to further enhance the stability and conductivity of UPG-1, a proton carrier (the amino acid Lysine, Lys) was successfully encapsulated within its porosity. The behaviors of both solids as an electrolyte were investigated by a complete experimental (impedance spectroscopy, water sorption) and computational approach (MonteCarlo, water sorption). Compared with the pristine UPG-1, the newly prepared [email protected] composite showed similar proton conductivity but a higher stability, which allows a better cyclability. This improved cyclability is mainly related to the different hydrophobic-hydrophilic balance of the [email protected] and UPG-1 and the steric protection of the reactive sites of the MOF by the Lys. View Full-Text
Keywords: Metal-Organic Frameworks; proton carriers; lysine; ion conductivity Metal-Organic Frameworks; proton carriers; lysine; ion conductivity
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MDPI and ACS Style

Vilela, S.M.F.; Salcedo-Abraira, P.; Gómez-Peña, A.; Trens, P.; Várez, A.; Salles, F.; Horcajada, P. Proton Conductive Zr-Phosphonate UPG-1—Aminoacid Insertion as Proton Carrier Stabilizer. Molecules 2020, 25, 3519. https://0-doi-org.brum.beds.ac.uk/10.3390/molecules25153519

AMA Style

Vilela SMF, Salcedo-Abraira P, Gómez-Peña A, Trens P, Várez A, Salles F, Horcajada P. Proton Conductive Zr-Phosphonate UPG-1—Aminoacid Insertion as Proton Carrier Stabilizer. Molecules. 2020; 25(15):3519. https://0-doi-org.brum.beds.ac.uk/10.3390/molecules25153519

Chicago/Turabian Style

Vilela, Sérgio M.F., Pablo Salcedo-Abraira, Alejandro Gómez-Peña, Philippe Trens, Alejandro Várez, Fabrice Salles, and Patricia Horcajada. 2020. "Proton Conductive Zr-Phosphonate UPG-1—Aminoacid Insertion as Proton Carrier Stabilizer" Molecules 25, no. 15: 3519. https://0-doi-org.brum.beds.ac.uk/10.3390/molecules25153519

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