التفاصيل البيبلوغرافية
| العنوان: |
Ion-Exchanged UPG-1 as Potential Electrolyte for Fuel Cells |
| المؤلفون: |
Salcedo-Abraira, P., Vilela, S.M.F., Ureña, N., Salles, F., Várez, A., Horcajada, P. |
| المصدر: |
Inogarnic Chemistry, 60(16), 11803-11812, (2021-07-28) |
| بيانات النشر: |
Zenodo |
| سنة النشر: |
2021 |
| المجموعة: |
Zenodo |
| مصطلحات موضوعية: |
Metal-Organic Frameworks, ionic exchange, proton conductivity, mixed matrix membrane |
| الوصف: |
Proton exchange membrane fuel cells (PEMFCs) are an attractive green technology for energy production. However, one of their mayor drawbacks is the instability of the electrolytes under working conditions (i.e., temperature and humidity). Some Metal-Organic Frameworks (MOFs) have recently emerged as promising alternative electrolyte materials due to their higher stability (compared with the organic polymers, currently used as electrolyte), proton conductivity and outstanding porosity and versatility. Here, we present the ionic exchange in a microporous zirconium phosphonate UPG-1 as an efficient strategy to enhance its conductivity and cyclability. Thus, labile protons of the hybrid structure were successfully replaced by different alkali cations (Li + , Na + and K + ), leading to two magnitude orders higher proton conductivity than the pristine UPG-1 (up to 2.3·10-2 S·cm -1 , which is comparable with those of the commercial electrolytes). Further, proton conductivity was strongly influenced by the MOF hydrophilicity and the polarization strength of cation, as suggested by molecular simulation. Finally, a mixed matrix membrane containing the best performing material (the potassium exchanged one) was successfully prepared, showing moderate proton conductivity (up to 8.51 10-3 S·cm -1 ). ; The authors acknowledge to the Ramón Areces Foundation project H+MOFs and to the M-ERA-NET C-MOF-cell project. The authors also thank the Agencia Española de Investigación /Fondo Europeo de Desarrollo Regional (FEDER/UE) for funding the projects PID2019-106662RBC43. This work has also been supported by Comunidad de Madrid (Spain) - multiannual agreement with UC3M (“Excelencia para el Profesorado Universitario” - EPUC3M04) - Fifth regional research plan 2016-2020. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| Relation: |
https://zenodo.org/communities/imdeaenergy; https://doi.org/10.1021/acs.inorgchem.1c00800; oai:zenodo.org:10902169 |
| DOI: |
10.1021/acs.inorgchem.1c00800 |
| الاتاحة: |
https://doi.org/10.1021/acs.inorgchem.1c00800 |
| Rights: |
info:eu-repo/semantics/openAccess ; Creative Commons Attribution 4.0 International ; https://creativecommons.org/licenses/by/4.0/legalcode |
| رقم الانضمام: |
edsbas.F69E6302 |
| قاعدة البيانات: |
BASE |