Li_3−2xM_xPS₄ (M = Ca or Mg) solid electrolytes were prepared by planetary ball-milling. Solid electrolytes that were amorphous in XRD were obtained with 0 ≤ x ≤ 0.115. A new crystalline phase was detected in samples with x ≥ 0.391. The addition of Ca²⁺ to the Li₃PS₄ matrix (x ≤ 0.115) resulted in reduction of the total conductivity at room temperature but conductivity enhancement was obtained at temperatures of 50 °C or higher. The sample Li_2.88Ca_0.06PS₄ exhibited conductivity of about 9 mS cm⁻¹ at 90 °C, which was much improved compared with the conductivity of intrinsic Li₃PS₄ (2 mS cm⁻¹).

中文翻译：

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Li _{3-2 x} M _x PS ₄（M = Ca或Mg）在高温下的高离子电导率

通过行星球磨制备Li _{3-2 x} M _x PS ₄（M = Ca或Mg）固体电解质。与0≤获得其是非晶态在XRD固体电解质 X  ≤0.115。与样品中检测到新结晶相X  ≥0.391。添加Ca ²⁺到李₃ PS ₄矩阵（X  ≤0.115）导致在室温下还原总电导率的，但在50℃或更高的温度，得到导电性增强。Li _2.88 Ca _0.06 PS ₄样品的电导率约为9 mS cm ^-1在90°C时，与本征Li ₃ PS ₄（2 mS cm ^-1）的电导率相比有很大改善。