Single‐Electrode Peltier Heats of Li‐Si Alloy Electrodes in LiCl‐KCl Eutectic Melt

This paper reports single‐electrode Peltier heats for cathodic (or anodic) reactions of Li‐Si alloy electrodes in coexisting phase states evaluated from their thermoelectric power values. The thermoelectric power and thermodynamic properties for various coexisting phase states in Li‐Si alloy were determined from electromotive force measurements of the following nonisothermal and isothermal cells, respectively, ( T ) Li | LiCl‐KCl | Li‐Si and ( T ) Li | LiCl‐KCl | Li‐Si ( T ). General methods of estimating the thermoelectric power for a lithium alloy electrode from its thermodynamic properties have been developed thermodynamically. The estimation methods were validated by detailed comparison with experimental results of Li‐Si alloy electrode systems.