A liquid derivative of 12-tungstophosphoric acid with unusually high conductivity |
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Authors: | Bourlinos Athanasios B Raman Kannan Herrera Rafael Zhang Qiang Archer Lynden A Giannelis Emmanuel P |
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Institution: | Department of Materials Science and Engineering, School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA. |
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Abstract: | Surface functionalization of the solid heteropolyacid H3PW12O40 with a bulky PEG-containing quaternary ammonium cation through partial proton exchange leads to a polyoxometalate-based liquid salt with high-temperature proton conductivity ( approximately 10-3 S cm-1 at 140 degrees C) under dry conditions. The proton conductivity of the liquid salt is 4 orders of magnitude higher than that of the solid analogue under identical conditions and shows super ionic behavior as defined by Walden plot. |
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