Journal
JOURNAL OF POWER SOURCES
Volume 160, Issue 1, Pages 752-757Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2006.01.014
Keywords
molten salt; ionic conductivity; iodides; electrolytes; thermal batteries
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A number of iodide-based electrolytes (LiCI-LiI, LiI-KI, LiCl-LiBr-LiI, LiCl-LiI-KI and LiF-LiCI-LiI) were considered to be used in thermal batteries. Ionic conductivity of multi-cation and all-lithium electrolytes were evaluated. They were compared to the classical electrolytes (LiCl-KCl, LiF-LiBr-KBr and LiF-LiCI-LiBr) used in thermal battery applications. Measurements were realised by electrochemical impedance spectroscopy (E.I.S.). It was shown that some all-lithium iodide-based electrolytes exhibit interesting ionic conductivities and are suitable as electrolytes in thermal batteries. It was pointed out that activation energy E-a was close to 11 kJ mol(-1) for multi-cation electrolytes, whereas it was equal to 7 kJ mol(-1) for all-lithium electrolytes. (c) 2006 Elsevier B.V. All rights reserved.
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