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°C, are obtained. These IL-based, proton-conducting membranes are proposed as new polymer electrolytes for high-temperature polymer electrolyte membrane fuel cells (PEMFCs)
New types of Brönsted acid-base ionic liquids-based membranes for applications in PEMFCs / Fernicola, Alessandra; Panero, Stefania; Scrosati, Bruno; Tamada, M; Ohno, H.. - In: CHEMPHYSCHEM. - ISSN 1439-4235. - STAMPA. - 8:7(2007), pp. 1103-1107. [10.1002/cphc.200600782]
New types of Brönsted acid-base ionic liquids-based membranes for applications in PEMFCs.
FERNICOLA, Alessandra;PANERO, Stefania;SCROSATI, Bruno;
2007
Abstract
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°C, are obtained. These IL-based, proton-conducting membranes are proposed as new polymer electrolytes for high-temperature polymer electrolyte membrane fuel cells (PEMFCs)I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
