Electrochemical behavior of Au and the characteristics of (Au2Na+Au) reference electrode in a LiF-NaF-KF eutectic melt
Creators
- 1. Kyoto University, Department of Fundamental Energy Science, Kyoto (Japan)
Description
Electrode behavior of gold has been investigated by means of cyclic voltammetry in a LiF-NaF-KF eutectic melt at 773 K. Besides the cathodic current peak corresponding to the electrodeposition of alkali metal, a cathodic peak was also observed at 0.45 V (vs. M+/M, M=alkali metal). According to the result of XRD analysis, the cathodic peak at 0.45 V was confirmed to be due to the formation of Au2Na alloy phase. Moreover, open circuit potential transient curve was also investigated after potentiostatic electrolysis at 0.3 V. The obtained potential plateau at 0.535 V was confirmed to correspond to the following equilibrium: Au2Na ↔ 2Au + Na+ + e-. Since the (Au2Na+Au) electrode shows a very stable potential, this electrode is suggested to use as a stable reference electrode in LiF-NaF-KF system. The main characteristics of this reference electrode, such as reproducibility, stability and reversibility, were investigated. The results have demonstrated that (Au2Na+Au) electrode is reliable. (author)
Additional details
Publishing Information
- Journal Title
- Annual Report of Quantum Science and Engineering Center
- Journal Volume
- 3
- Journal Page Range
- p. 80-84
- ISSN
- 1345-0700
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 33000444
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- BENCH-SCALE EXPERIMENTS; ELECTRIC POTENTIAL; ELECTROCHEMISTRY; ELECTRODES; EUTECTICS; GOLD; GOLD ALLOYS; LITHIUM FLUORIDES; POTASSIUM FLUORIDES; SODIUM ALLOYS; SODIUM FLUORIDES; VOLTAMETRY
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALLOYS; CHEMISTRY; ELEMENTS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; LITHIUM COMPOUNDS; LITHIUM HALIDES; METALS; POTASSIUM COMPOUNDS; SODIUM COMPOUNDS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Notes
- 6 refs., 6 figs.