DC polarization measurements were performed on a Au|Li7Si2S7I|Au symmetric cell using a Keithley 6430 Sub-Femtoamp Remote SourceMeter.
The data were collected at 303 K by applying constant bias voltages of 0.05, 0.1, 0.2 and 1 V for 4, 8, 12 and 20 h, respectively.
The measurements were performed until the current reached a steady state.
Data is presented in 4 column format: time(s) for whole measurement, time(s) for each bias voltages, current (A) and Voltage applied (V)