A liquid derivative of 12-tungstophosphoric acid with unusually high conductivity.
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.
Bourlinos
Athanasios B
AB
Department of Materials Science and Engineering, School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA.
Raman
Kannan
K
Herrera
Rafael
R
Zhang
Qiang
Q
Archer
Lynden A
LA
Giannelis
Emmanuel P
EP