Behavior of Some Binary Lithium Alloys as Negative Electrodes in Organic Solvent‐Based Electrolytes

In an attempt to overcome problems associated with the reversible lithium electrode in organic solvent-based electrolytes, the electrochemical characteristics of a number of binary and ternary lithium alloys in propylene carbonate have been studied. Thermodynamic and kinetic results for the Li-Sn, Li-Sb, and Li-Bi systems are reported here. In each of these systems, one or more two-phase regions with apparently rapid transformation kinetics at ambient temperature have been identified. Lithium chemical potentials and partial molar entropies for the alloys have been determined. Constant current charge-discharge characteristics and diffusion coefficient data have also been obtained.