An Electroanalytical Study of Electrode Process on Carbon Electrode in LiF-NaF-KF Melt

Abstract

An electroanalytial study on the anode process of carbon electrode in LiF-NaF-KF melt was carried out by cyclic voltammetry (CV), chronoamperometry (CA), and gas chromatography. At the potentials higher than 3.7 V versus K⁺/K the anode effect appeared and generation of perfluorocarbons (PFCs) such as CF₄ and C₂F₆ was observed from the same potential. At 1223 K, the current stayed at very lower level over the range of high potentials (>3.5 V), and only small amount of PFCs was detected, while at lower temperatures, large value of PFCs generation was observed from the potential higher than 7.0 V.