and the edges of the cell were sealed with 5-
mm-wide strips of 60-lm-thick sealing sheet (Meltonix 1170-60,
Solaronix). Sealing was accomplished by hot-pressing the two electrodes
together at 373 K. The redox electrolyte was injected into
the cell through small holes, which were then sealed with a small
square of sealing sheet. The redox electrolyte consisted of 0.3 M
1,2-dimethyl-3-propylimidazolium iodide (Solaronix), 0.5 M LiI
(Aldrich), 0.05 M I2 (Aldrich), and 0.5 M 4-tert-butylpyridine
(4-TBP, Aldrich) and 3-methoxypropionitrile (3-MPN, Fluka) as a
solvent