Determination of thermodynamic properties of alkaline earth-liquid metal alloys using the electromotive force technique

Thomas P. Nigl, Nathan D. Smith, Timothy Lichtenstein, Jarrod Gesualdi, Kuldeep Kumar, Hojong Kim

Research output: Contribution to journalArticle

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Abstract

A novel electrochemical cell based on a CaF2 solid-state electrolyte has been developed to measure the electromotive force (emf) of binary alkaline earth-liquid metal alloys as functions of both composition and temperature in order to acquire thermodynamic data. The cell consists of a chemically stable solid-state CaF2-AF2 electrolyte (where A is the alkaline-earth element such as Ca, Sr, or Ba), with binary A-B alloy (where B is the liquid metal such as Bi or Sb) working electrodes, and a pure A metal reference electrode. Emf data are collected over a temperature range of 723 K to 1,123 K in 25 K increments for multiple alloy compositions per experiment and the results are analyzed to yield activity values, phase transition temperatures, and partial molar entropies/enthalpies for each composition.

Original languageEnglish (US)
Article numbere56718
JournalJournal of Visualized Experiments
Volume2017
Issue number129
DOIs
StatePublished - Nov 3 2017

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Chemical Engineering(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)

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