Thermal properties and conductivity of the lithium bis(trifluoromethane)sulfonamide (LiTSFI) were studied in a temperature range of 60–270?°C by differential scanning calorimetry (DSC) and impedance spectroscopy methods. As shown by DSC technique, at the first heating, three endothermic effects associated with dehydration, phase transition, and melting were observed On subsequent cooling and heating, only the thermal effect due to the ionic salt melting was observed. These data were confirmed by conductivity measurements. On cooling the LiTSFI sample from the molten state an abrupt decrease in the conductivity due to crystallization into the high-temperature γ-phase was observed. Thus, according to the DSC and conductivity data, the high-temperature γ-phase may be easily quenched down to room temperature. The parameters of Arrhenius dependence of conductivity for γ-phase were estimated. It was shown that this phase has rather low ionic conductivity, below 10-6 S/cm near the melting point and cannot be regarded as orientationally disordered phase.

通過差示掃描量熱法（DSC）和阻抗譜法研究了雙（三氟甲烷）磺酰胺鋰（LiTSFI）在60–270 °C溫度范圍內的熱性能和電導率。如DSC技術所示，在第一次加熱時，觀察到與脫水、相變和熔融相關的三種吸熱效應，在隨后的冷卻和加熱中，僅觀察到離子鹽熔化引起的熱效應。這些數據通過電導率測量得到證實。在將LiTSFI樣品從熔融狀態(tài)冷卻時，觀察到由于結晶到高溫γ相中，電導率突然下降。因此，根據DSC和電導率數據，高溫γ相可以很容易地淬火到室溫。估計了γ相電導率的阿倫尼烏斯依賴性參數。結果表明，該相具有相當低的離子電導率，在熔融點附近低于10-6 S/cm