Development of new high-performance conductive membranes based on polymerized ionic liquids for their use in fuel cells
ABSTRACT: This thesis focuses on the development of innovative polymeric membranes for proton exchange membrane fuel cells (PEMFCs) without external humidification using ionic liquids as favorable proton exchange medium. In order to improve the low performance under non-humidified conditions reporte...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/10754 |
| Acceso en línea: | http://hdl.handle.net/10902/10754 |
| Access Level: | acceso abierto |
| Palabra clave: | Electrolito PEMFC Polímero Líquido iónico Agua Electrolyte Polymer Ionic liquid Water |
| Sumario: | ABSTRACT: This thesis focuses on the development of innovative polymeric membranes for proton exchange membrane fuel cells (PEMFCs) without external humidification using ionic liquids as favorable proton exchange medium. In order to improve the low performance under non-humidified conditions reported for commercial perfluorosulfonic membranes, an impregnation procedure with two different protic ionic liquids was carried out demonstrating the viability of protic ionic liquids as proton carriers under non-humidified conditions. The next step analyzed the design of high performance electrolytes under non-humidified conditions avoiding the use of expensive perfluorinated polymers. For this purpose, membranes based exclusively on polymerized protic ionic liquids were developed. Finally, membranes based on protic plastic crystal and electrospun nanofibers were developed. Overall, this work contributes to the progress of the state of the art of PEMFC and targets to the research of new electrolytes for this technology with improved properties over the most widely used perfluorosulfonic membranes. |
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