A Liquid Derivative of 12-Tungstophosphoric Acid with Unusually High Conductivity
- 9 November 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 126 (47) , 15358-15359
- https://doi.org/10.1021/ja046821b
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 (∼10-3 S cm-1 at 140 °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.Keywords
This publication has 10 references indexed in Scilit:
- Approaches and Recent Development of Polymer Electrolyte Membranes for Fuel Cells Operating above 100 °CChemistry of Materials, 2003
- Solvent-Free Electrolytes with Aqueous Solution-Like ConductivitiesScience, 2003
- Ionic Liquids: Ion Mobilities, Glass Temperatures, and FragilitiesThe Journal of Physical Chemistry B, 2003
- Brønsted acid–base ionic liquids and their use as new materials for anhydrous proton conductorsChemical Communications, 2003
- Fabrication and characterization of heteropolyacid (H3PW12O40)/directly polymerized sulfonated poly(arylene ether sulfone) copolymer composite membranes for higher temperature fuel cell applicationsJournal of Membrane Science, 2002
- Poly(ethylene oxide)/Silica Nanocomposites: Structure and RheologyLangmuir, 2002
- Solid acids as fuel cell electrolytesNature, 2001
- A Survey of Applications of PolyoxometalatesChemical Reviews, 1998
- Fuel cell electrolytes: evolution, properties and future prospectsJournal of Power Sources, 1994
- Temperature and humidity ranges of some hydrates of high-proton-conductive dodecamolybdophosphoric acid and dodecatungstophosphoric acid crystals under an atmosphere of hydrogen or either oxygen or airSolid State Ionics, 1981