Novel, Solvent-Free, Single Ion-Conducting Polymer Electrolytes
Final rept. 1 Feb 2005-7 Nov 2007
UNIVERSITA DEGLI STUDI LA SAPIENZA ROME (ITALY) DIPT DI CHIMICA
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The work carried out within this project has lead to the development of new types of dual composite PEO-based electrolytes having outstanding properties. This also, and particularly, applies to the new member of the family discussed in this report, i.e. the electrolyte formed by the combination of a calyx6pyrrole, CP anion-trapping compound with a large anion lithium salt, such as lithium bisoxalate borate, LiBOB. The results here described show that this combination gives rise to PEO-based polymer electrolytes having excellent transport properties. Polymer electrolyte membranes of the PEO20LiBOBCP0.125 composition have in the 80 C temperature range a lithium transference number of about 0.5 versus the 0.3 value of conventional PEO systems and an ionic conductivity of the order of 0.001 Scm-1.
- Physical Chemistry