Free lewis acid effects in electrolytes for Li/SOCl2 cells |
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| Authors: | A J Hills N A Hampson |
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| Affiliation: | (1) Department of Chemistry, Loughborough University of Technology, LE11 3TU Loughborough, Leicester, UK |
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| Abstract: | Electrolyte solutions containing lithium tetrachloroaluminate with free aluminum chloride added, have been evaluated for use in Li/SOCl2 cells. The optimum electrolyte composition contained 1.0 M LiAlCl4 plus 2.0 M AlCl3 in SOCl2. Such a solution, when used in cells in place of the more usual 1.8 M LiAlCl4 electrolyte, results in 45% longer reaction times. This increase can only be explained in part by a two stage discharge process. The beneficial effect of free Lewis acid in the electrolyte was found to be greater for cells containing lower surface area carbon black cathodes. |
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