The ionic conductivity of LiOTf and LiTFSi as a function of the ambient temperature T from 0 ℃ to 100 ℃ (Figure and Figure ) is measured experimentally. The logarithmic scale of ionic conductivity is found to be linearly proportional to 1000/T , following an Arrhenius behavior σ ∼ exp(-E a /RT ), where E a is an apparent activation energy, R is the universal gas constant, and T is the absolute temperature. The apparent activation energy is the slope of the fit line, which is quite similar in LiOTf and LiTFSi. We believe that the apparent activation energy is the combination of the energy barriers of (1)