H/D isotope effects in high temperature proton conductors

N. Bonanos, Jannetje Maria Huijser, F.W. Poulsen

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)
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Abstract

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
Pages (from-to)9-13
Number of pages5
JournalSolid state ionics
Volume275
DOIs
Publication statusPublished - 2015

Keywords

  • METIS-310606
  • IR-96687

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