Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen: doi:10.22028/D291-24250
Titel: Investigation of new ion-conducting ORMOLYTES : structure and properties
Verfasser: Dahmouche, Karim
Atik, Mohamed
Mello, Nilson C.
Bonagamba, Tito J.
Panepucci, Horacio
Aegerter, Michel A.
Judeinstein, Patrick
Sprache: Englisch
Erscheinungsjahr: 1997
Quelle: Journal of sol-gel science and technology. - 8. 1997, S. 711-715
SWD-Schlagwörter: Lithiumion
Sol-Gel-Verfahren
Ionenleitung
Raumtemperatur
Tetraethylsilicat <Tetraethylorthosilicat>
Polyethylenglykole
Polymere
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumentart : Journalartikel
Kurzfassung: Two families of hybrid organic-inorganic composites exhibiting Li+ ionic conduction (ORMOLYTES) have been prepared by the sol-gel process. The first family, prepared from a mixture of 3-isocyanatopropyltriethoxysilane, O,O''Bis (2-aminopropyl)-polyethyleneglycol (or O,O'Bis (2-aminopropyl)-polypropyleneglycol) and lithium salt, presents chemical bonds between the organic and the inorganic phase and an ionic conductivity &sigma; higher than 10-4 S m-1 at room temperature. Their properties have been related to their structure using liquid state NMR measurements of 7Li between -100°C and +100'°C and the DMTA technique. In the second family, prepared by ultrasonic method from a mixture of tetraethoxysilane (TEOS), polyethyleneglycol (PEG) and lithium salt, the organic and inorganic phases are not chemically bonded. Ionic conductivity &sigma; has been studied as a function of the polymer chain length and concentration. Values of &sigma; up to 10-2S m-1 at room temperature have been obtained (with a silica-PEG300 system, PEG/TEOS=40% in weight). Again, structure was investigated by liquid state 7Li NMR measurements.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-24914
hdl:20.500.11880/24306
http://dx.doi.org/10.22028/D291-24250
SciDok-Publikation: 4-Dez-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

Dateien zu dieser Ressource:
Datei Beschreibung GrößeFormat 
aeg199714.pdf520,18 kBAdobe PDFÖffnen/Anzeigen


Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt.