Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Aqueous tracer diffusion coefficients of ions to 1000°C and 5 kb

1988 ◽  
Vol 52 (1) ◽  
pp. 63-85 ◽  
Author(s):  
Eric H. Oelkers ◽  
Harold C. Helgeson
Keyword(s):  
Transport Properties ◽  
Diffusion Coefficients ◽  
High Pressures ◽  
Tracer Diffusion ◽  
Thermodynamic And Transport Properties ◽  
High Pressures And Temperatures ◽  
Tracer Diffusion Coefficients ◽  
Aqueous Species

The importance of transport property studies for battery electrolytes: revisiting the transport properties of lithium–N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide mixtures

2017 ◽  
Vol 19 (16) ◽  
pp. 10527-10542 ◽  
Author(s):  
Thomas Rüther ◽  
Mitsuhiro Kanakubo ◽  
Adam S. Best ◽  
Kenneth R. Harris
Keyword(s):  
Transport Properties ◽  
Transport Property ◽  
Diffusion Coefficients ◽  
Tracer Diffusion ◽  
Ion Interactions ◽  
Tracer Diffusion Coefficients

All three ion–ion interactions contribute to transport properties in {Li[FSI]–[Pyr13][FSI]} mixtures. Tracer diffusion coefficients of LI+ in [Pyr13][FSI] are predicted.

Phase Diagram and Transport Properties of Cubic Lithium Sulphate with Small Quantities of Thulium Sulphate and Aluminium Sulphate

1970 ◽  
Vol 25 (12) ◽  
pp. 1921-1925 ◽  
Author(s):  
Ante Bengtzelius ◽  
Ann-Mari Josefson ◽  
Arnold Kvist ◽  
Kjell Schroeder
Keyword(s):  
Phase Diagram ◽  
Electrical Conductivity ◽  
Transport Properties ◽  
Diffusion Coefficients ◽  
Divalent Cations ◽  
Tracer Diffusion ◽  
Aluminium Sulphate ◽  
Lithium Sulphate ◽  
Tracer Diffusion Coefficients

Abstract The phase diagram and electrical conductivity of cubic lithium sulphate with small quantities of thulium sulphate and aluminium sulphate have been measured. We have also measured the tracer diffusion coefficients of Tm3+ and Al3+ in pure cubic lithium sulphate. The diffusion coefficients of the trivalent ions are much lower than those of the univalent and divalent cations. The results indicate that the trivalent ions are trapped in the lattice.

Non-Stoichiometry and Cation Tracer Diffusion Studies in the Magnetite-UlvÖSpinel Solution, (Fe,Ti)3-δO4

1994 ◽  
Vol 369 ◽  
Author(s):  
Sanjeev Aggarwal ◽  
Rudiger Dieckmann
Keyword(s):  
Diffusion Coefficients ◽  
Tracer Diffusion ◽  
Oxygen Activity ◽  
Spinel Solid Solution ◽  
Low Oxygen ◽  
Cation Diffusion ◽  
Deviation From Stoichiometry ◽  
Diffusion Studies ◽  
Tracer Diffusion Coefficients ◽  
Point Defect Structure

AbstractCation diffusion in the spinel solid solution (Fe1-xTix)3-δO4 (0≤ x ≤ 0.3) was investigated at 1200 ºC as a function of oxygen activity, aO2 and cationic composition, x. At different cationic compositions, cation tracer diffusion coefficients, D*Me of Me = Fe and Ti were measured as a function of oxygen activity. Plots of log DMe vs. loga0 show V-shaped curves, indicating that different types of point defects prevail at high anc low oxygen activities. Thermogravimetric experiments were conducted, using a high resolution microbalance, to determine the deviation from stoichiometry in (Fe1-xTix)3-δO4 at 1200 °C. δversus log aO2 curves are S-shaped. An analysis of the oxygen activity dependences of thecation diffusion coefficients and the deviation from stoichiometry with regardto the point defect structure suggests that at high oxygen activities cation vacancies are the predominant defects governing the deviation from stoichiometry and the diffusion ofcations. At low oxygen activities, and at small values of x, cation interstitials determine the deviation from stoichiometry, while they dominate for 0 ≤ x ≤ 0.3 inthe cation diffusion.

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