Lithium iodide-based solid electrolytes

✍ Scribed by Alan Hooper

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 359 KB
• Volume: 9
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(83)80030-5

✦ Synopsis

Mixtures of anhydrous lithium iodide and lithium hydroxide monohydrate exhibit conductivity transitions in the region of 170 "C and 100 "C. At the lower temperature transition, increases of two to three orders of magnitude are observed in mixtures containing as little as l/80 by weight of LiOH-HzO. Stable conductivities of about 10-l ohm-' cm-' are attained at 250 "C and both transitions are, with some hysteresis, reversible. With alumina additions, however, cooling specimens from just above the lower transition leads to Arrhenius-type behaviour with activation energies in the range 0.4 -0.5 eV. Stable room temperature conductivities in the region of 5 X lo-' ohm-' cm-' have been achieved. These results are discussed in terms of a super-cooled liquid phase.