Li₇P₃S₁₁ (LPS) solid electrolytes have great advantages, such as high lithium-ion conductivity, and can easily fabricate to make bulk-type all-solid-state lithium batteries. However, LPS has a disadvantage because of large interfacial resistance with lithium, which give a limitation for all-solid-state battery. In this study, (100-x)Li₇P₃S₁₁-x Li₃SI (x = 0. 2 and 5) solid electrolyte composites are prepared by mechanical ball milling process. Various physiochemical analysis was carried out to confirm the proper mixing of Li₇P₃S₁ and Li₃SI solid electrolytes. The addition of Li₃SI solid electrolyte, effectively influence the ionic conductivity and electrochemical properties of the Li₇P₃S₁ solid electrolyte. The prepared Li₇P₃S₁₁/Li₃SI solid electrolyte composites are stable against the lithium metal anode even after 100 h charge-discharging process and has stable potential window up to 10 V. In particular, 98Li₇P₃S₁₁-2Li₃SI solid electrolyte based ASSLBs shows the highest capacity, of 110 mA/g at the current density of 7.5 mA g⁻¹ (0.05 C). The charge – discharge cycle stability test also proved the Li₃SI mixing to Li₇P₃S₁₁ helped to maintain the capacity retention value of ∼100 % after 10 cycles. Therefore, the Li₃SI into the Li₇P₃S₁₁ electrolyte helps improve the electrochemical performance.

Li ₇ P ₃ S ₁₁（LPS）固体电解质具有很大的优势，例如高锂离子传导性，并且可以容易地制造以制造块状全固态锂电池。然而，由于与锂的大的界面电阻，LPS具有缺点，这限制了全固态电池。在这项研究中，通过机械球磨工艺制备了（100-x）Li ₇ P ₃ S ₁₁ -x Li ₃ SI（x  =  0. 2和5）固体电解质复合材料。进行了各种理化分析，以确定Li ₇ P ₃ S ₁和Li ₃的正确混合SI固体电解质。Li ₃ SI固体电解质的加入有效地影响了Li ₇ P ₃ S ₁固体电解质的离子电导率和电化学性能。所制备的锂₇ P ₃小号₁₁ /栗₃ SI固体电解质复合物是对即使经过100负极的金属锂稳定 ħ充放电过程，并且具有稳定的电位窗长达10  V.特别地，98Li ₇ P ₃小号₁₁ -基于2Li ₃ SI固体电解质的ASSLBs 在7.5的电流密度下显示出110 mA / g的最高容量 mA g ^-1（0.05 C）。充放电循环稳定性测试还证明，将Li ₃ SI与Li ₇ P ₃ S ₁₁混合可以使10个循环后的容量保持率保持在约100％。因此，将Li ₃ SI注入Li ₇ P ₃ S ₁₁电解质中有助于改善电化学性能。