Investigation of Lithium Utilization from A Lithium‐Silicon Electrode

A half‐cell of the type was used to investigate lithium utilizations (to a 0.5V cutoff vs. 40 atomic percent Li‐Al) from , , and at current densities between 20 and 1000 mA/cm 2 and at temperatures between 675° and 750°K. The lithium utilizations from these compounds did not appear to be greatly influenced by current density or temperature variations. For example, 60–80% of the lithium from the plateau, >90% of the lithium from the plateau, and 80–90% of the lithium from the plateau were utilized at current densities between 50 and 400 mA/cm 2 . The polarization at current densities up to 500 mA/cm 2 appeared to be mostly ohmic.