Transport properties of a new Li 1 ion-conducting ormolyte: (SiO 2 –PEG)–LiCF 3 SO 3 (original) (raw)

The transport properties of a new fast Li 1 ion-conducting sol-gel-derived ormolyte, (SiO 2 -10 wt% PEG)-[Li/O] LiCF 3 SO 3 , with [Li/O]~0-0.1 (mol/mol), is reported. The composition with [Li/O]~0.04 exhibited the highest conductivity (s 25 uC~1 6 10 24 S cm 21 ), with an enhancement of 10 3 over the host matrix (SiO 2 -10 wt% PEG xerogel), and has been found to be the 'optimum conducting composition'. Direct determination of Li 1 ion mobility (m) and mobile ion concentration (n) revealed that the enhancement was due to the increase in both m and n. Studies of the variation of s, m, and n versus temperature indicated that the system shows Arrhenius-type behavior. The activation energy and energies of migration and formation were evaluated from their respective Arrhenius plots. Measurement of the ion transference number (t ion ) confirmed that the ions are the sole charge carriers in the system. These results are discussed in the light of existing theories.

Sign up for access to the world's latest research.

checkGet notified about relevant papers

checkSave papers to use in your research

checkJoin the discussion with peers

checkTrack your impact