 |
 |
TUGR HOME SHORT STORIES |
The effects of self-assembled molecular layers at the Lithium (Li) electrode / polymer electrolyte interface in a polymer electrolyte battery have been investigated. Previous studies in this laboratory have indicated the possibility of inhibiting passivation of the Li electrode using self-assembled molecular layers. Cyclic voltammetric studies of the battery, with and without the self-assembled molecular layers at the electrolyte / electrode interface, have been carried out. Results of the present work show that the electrode reactions are more reversible in the presence of self-assembled molecular layers. The passivated electrode has been treated as a microarray electrode with active and inactive (passivated) sites. Analysis of AC Impedance Spectroscopic data based on the microarray electrode model shows that the rate of passivation is higher in the absence of self-assembled molecular layers. These observations support the suggestion that the presence of self-assembled molecular layers at the interface helps to inhibit the passivation of Li electrode. The calculated dimensions of active and inactive sites compare favorably with those seen in AFM images.
Send Comments and Questions to: ©Copyright 2000 The University of
Tulsa Graduate Review, All Rights Reserved. |