In this work, we synthesized a Li_6-xPS_5-xCl_1.0Br_0.5 solid electrolytes by solution technique process to facilitate mass production. First, the precursor was dissolved in acetonitrile for 8 h, and then solvent was removed by vacuum evaporator. The product was then obtained after sintering at 480 °C for 15 h. X-ray diffraction (XRD) measurement and Raman spectral analysis were conducted to determine the structural characteristic of the solid electrolytes. The ionic conductivity of the resulting Li_5.5PS_4.5Cl_1.0Br_0.5 was highest at 7.0 mS cm⁻¹ at 25 °C. The critical current density was also higher than that of Li₆PS₅Cl. When Li_5.5PS_4.5Cl_1.0Br_0.5 was used in ASSLBs (All-solid-state lithium batteries) with LiNi_0.8Mn_0.1Co_0.1O₂ as cathode material and Li-In alloy as an anode material, the initial discharge capacity was 183.6 mAh g^-1 at a rate of 0.1 C and the capacity retention was 78% after 50 cycles.

在这项工作中，我们通过溶液技术合成了Li _6-x PS _5-x Cl _1.0 Br _0.5固体电解质，以利于大规模生产。首先，将前体溶解在乙腈中8小时，然后通过真空蒸发器除去溶剂。经480℃烧结15h后得到产品。进行X射线衍射（XRD）测量和拉曼光谱分析以确定固体电解质的结构特征。所得Li _5.5 PS _4.5 Cl _1.0 Br _0.5的离子电导率最高为7.0 mS cm ^-1在25°C。临界电流密度也高于Li ₆ PS ₅ Cl。当Li _5.5 PS _4.5 Cl _1.0 Br _{0.5用于以LiNi 0.8} Mn _0.1 Co _0.1 O ₂为正极材料、Li-In合金为负极材料的ASSLB（全固态锂电池）时，首次放电容量为183.6 0.1C倍率下的mAh g ^{-1 ，50次循环后容量保持率为78%。}