H/D isotope effects in high temperature proton conductors

Publication: Research - peer-reviewJournal article – Annual report year: 2015

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The atomic mass ratio of ca. 2 between deuterium and hydrogen is the highest for any pair of stable isotopes and results in significant and measurable H/D isotope effects in high temperature proton conductors containing these species. This paper discusses H/D isotope effects manifested in O-H/O-D vibration frequencies, the mobility of H+/D+ carriers, the kinetics of the electrochemical oxidation of H2/D2, the solubilities of H2O/D2O and, finally, the spontaneous electromotive force that appears across H2/D2 cells with proton conducting electrolytes. Comparable work on tritium-exchanged materials is also discussed. The results highlight the usefulness of isotope effects in the study of high temperature proton conductors.
Original languageEnglish
JournalSolid State Ionics
Volume275
Pages (from-to)9-13
Number of pages5
ISSN0167-2738
DOIs
StatePublished - 2015
CitationsWeb of Science® Times Cited: 14

    Keywords

  • Proton conductor Isotope effect Hydrogen Deuterium Tritium Zero point energy, Carrier mobility, Deuterium, Electrochemical oxidation, Hydrogen, Protons, Tritium, Atomic mass, High temperature proton conductor, Isotope effect, Proton conductors, Proton-conducting electrolyte, Stable isotopes, Vibration frequency, Zero-point energies, Isotopes
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