Methods for Determining the Working Electrode Interfacial Area for Electroanalytical Measurements of Metal Ions in Molten LiCl-KCl. (30th August 2016)

• Record Type: Journal Article
• Authors: Rappleye, Devin; Horvath, David; Wang, Zhonghang; Zhang, Chao; Simpson, Michael Forrest
• Is Part Of: ECS transactions. Volume 75:Number 15(2016)
• Page Start: 79
• Page End: 85
• Publication Date: 2016-08-30
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07515.0079ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : In this paper, we present an empirical evaluation of methods for determining the interfacial area between a working electrode and molten salt—specifically demonstrated using the eutectic LiCl-KCl system. Approaches studied include dipping a cold electrode into the molten salt, using a vertical translator to adjust the height of the electrode, partially coating the electrodes with an insulating material, and integrating a pre-peak which may represent formation of a monolayer of metal on the electrode. Salt mixtures investigated include LiCl-KCl-UCl3, LiCl-KCl-UCl3 -MgCl2, LiCl-KCl-LaCl3 -GdCl3, and LiCl-KCl-LaCl3 -MgCl2 . With accurate determination of the electrode-salt interfacial area, concentration correlations can be developed with error below 2%.