New types of Brönsted acid-base ionic liquids-based membranes for applications in PEMFCs
| Autor: | Hiroyuki Ohno, Stefania Panero, Bruno Scrosati, Masahiro Tamada, Alessandra Fernicola |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Polymers
Inorganic chemistry Electrolyte Alkalies Electrochemistry Electrolytes chemistry.chemical_compound Proton transport Ionic conductivity Physical and Theoretical Chemistry Imide Fuel cells chemistry.chemical_classification Membranes Molecular Structure Electric Conductivity Temperature Polymer Hydrogen-Ion Concentration Atomic and Molecular Physics and Optics Fuel cells Ionic liquids Membranes Proton transport Ionic liquids Membrane chemistry Ionic liquid Acids |
| Popis: | A series of ionic liquids (ILs) are prepared by neutralizing tertiary amines with N,N-bis(trifluoromethanesulfonyl)imide (HTFSI). As demonstrated by thermal and electrochemical characterizations, these ILs have very good temperature stability and a high ionic conductivity, that is, of the order of 10(-2) S cm-1. By incorporating these ILs into a poly(vinylidenfluoride-co-hexafluoropropylene) polymer matrix, membranes with a high melting temperature, high decomposition point and with an ionic conductivity of about 10(-2) S cm-1 at 140 degrees C, are obtained. These IL-based, proton-conducting membranes are proposed as new polymer electrolytes for high-temperature polymer electrolyte membrane fuel cells (PEMFCs). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|