ABSTRACT

This chapter presents preliminary results on the experimental study of lithium migration with embedded cathode. The embedded titanium mesh in the specimens was the cathode, i.e., it attracted cations, such as lithium ions, when electric potential was applied. Anoryte pH was measured with pH test strips and samples were collected throughout the experiment and analysed by Inductively Coupled Plasma, in order to obtain the concentration of sodium, potassium and lithium and calcium. Preliminary results indicate that by applying higher voltage it is possible to drive more lithium ions into the specimen, as expected. Specimens were tested during four or eight weeks, under 15 or 25 V. Current and anoryte temperature were continuously monitored. Cell electrical resistance was measured with a multimeter at 120 Hz, in resistance mode. All cells exhibited increasing resistivity until the end of the experiment.