Lowell A. King

An electrochemical study of the Fe(III)/Fe(II) electrode reaction in the aluminum chloride+N-(n-butyl)pyridinium chloride molten salt system

Abstract The Fe(III)/Fe(II) electrode reaction was studied in the room temperature molten salt 2:1 molar ratio aluminum chloride+N-(n-butyl)pyridinium chloride at 30°C and in the 1:1 molar ratio aluminum chloride+N-(n-butyl)pyridinium chloride melt at 35°C. Techniques employed for this study were rotating disc electrode voltammetry, cyclic voltammetry and potentiometry. The results obtained in the 2:1 melt indicate that the charge transfer for reduction of Fe(III) is only moderately rapid (quasi-reversible) at glassy carbon and tungsten electrodes. In contrast the rate of reduction of Fe(III) appears to be mass transport controlled in 1:1 melt at these electrodes. Values of the standard heterogeneous rate constant, transfer coefficient, diffusion coefficient, and standard potential are reported for the Fe(III)/Fe(II) system.

Deposition and Dissolution of Lithium‐Aluminum Alloy and Aluminum from Chloride‐Saturated LiCl ‐ AlCl3 and NaCl ‐ AlCl3 Melts

Metal deposition‐dissolution studies in the melt were conducted primarily on an aluminum substrate, using the techniques of cyclic voltammetry, chronoamperometry, chronocoulometry, and chronopotentiometry. A lithium‐aluminum alloy was deposited. The alloy is formed predominately by a deposition process on the surface of the aluminum substrate rather than by conversion of the aluminum into the alloy by an implantation mechanism, as is the case in other electrolytes. The electrode would be electrochemically reversible, were it not for a corrosion reaction between the alloy and the melt. For comparison, similar studies were conducted on the behavior of aluminum in the melt. The superiority of in the melt to aluminum in the melt for battery applications is indicated. A significant finding is that nondendritic, adherent, dense deposits of aluminum or an aluminum alloy, having less than 50 mol percent lithium content, can be electroformed via initial formation of .

Evaluation and optimization of pelletized LiAl/NaAlCl4/ MoCl5 electrochemical cells☆

Abstract A proposed, low temperature molten salt thermally activated reserve battery (thermal battery) was investigated using single cell testing techniques. Th

Thermodynamic Analysis of Chloroaluminate Concentration Cells

Abstract Equations are given for emf of concentration cells with chloroaluminate melts. The usual assumption that t M = 1 may lead to doubtful interpretations, especially for melts with large organic cations.