Transference number measurements on a hybrid polymer electrolyte

✍ Scribed by IbI. olsen; Rene Koksbang; Eivind Skou

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 525 KB
• Volume: 40
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(95)00094-u

✦ Synopsis

Two

methods were used to measure the transference number of a hybrid polymer electrolyte at different salt concentrations.

The hybrid polymer electrolyte was based on a radiation induced crosslinked polyether network with propylene carbonate in an interpenetrating liquid phase and LiAsF, as electrolyte salt. One method for transference number measurements was based on the Hittorf method, which gave values ranging from 0.15 at 0.1 molekg-' to 0.31 at 2.1 mole kg-l. The other method was the DC-polarization method, which gave values from 0.31 at 0.1 mole kg-' to 0.72 at 2.1 mole kg-'. The difference in the transference numbers between the two methods is explained by contribution from mobile ion-pairs.