Abstract
The performance of lithium polymer cells fabricated with Polyacrylonitrile (PAN) based electrolytes was studied using cycling voltammetry and continuous charge discharge cycling. The electrolytes consisted of PAN, ethylene carbonate (EC), propylene carbonate (PC) and lithium trifluoromethanesulfonate (LiCF3SO3 – LiTF). The polymer electrode material was polypyrrole (PPy) doped with dodecyl benzene sulfonate (DBS). The cells were of the form, Li / PAN : EC : PC : LiCF3SO3 / PPy : DBS. Polymer electrodes of three different thicknesses were studied using cycling at different scan rates. All cells had open circuit voltages in the range, 3.0 – 3.5 V vs Li. With increasing scan rates as well as thickness of the polymer electrode, diminishing of peaks and increase of peak separation in cyclic voltammograms was seen. Charge values obtained with constant charge discharge cycling and with cyclic voltammetry at slow scan rates were similar. The charge factor remained close to unity. These results show the fact that satisfactory cell performance can be achieved with thin electrode films and cycling at slow scan rates.
| Original language | English |
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| Title of host publication | Solid State Ionics: Advanced Materials for Emerging Technologies |
| Editors | B.V.R. Chowdari, M.A. Careem, M.A.K.L. Dissanayake, R.M.G. Rajapakse, V.A. Seneviratne |
| Place of Publication | Singapore |
| Publisher | World Scientific |
| Publication date | 2006 |
| Pages | 826-832 |
| ISBN (Print) | 981-256-877-8 |
| Publication status | Published - 2006 |
| Event | 10th Asian Conference on Solid State Ionics - Kandy, Sri Lanka Duration: 12 Jun 2006 → 16 Jun 2006 Conference number: 10 |
Conference
| Conference | 10th Asian Conference on Solid State Ionics |
|---|---|
| Number | 10 |
| Country/Territory | Sri Lanka |
| City | Kandy |
| Period | 12/06/2006 → 16/06/2006 |