The poor interface between the active materials, solid electrolytes, and conductive additives in composite cathode materials is the key factor restricting the performance of the all-solid-state lithium-sulfur battery. Here, the composite cathode material was prepared through the method of one-step ball milling. The sulfide electrolyte Li₃PS₄ (LPS) was formed on the surface of the active material Li₂S while the conductive additives were incorporated, and the conductive ions and electronic network were constructed simultaneously. After adding an appropriate amount of carbon nanotubes (cnt), the composite cathode exhibited high specific capacity of 1145.2 mAh g⁻¹ after 30 times of cycling at a current density of 0.2 mA cm⁻², and the battery with ultrahigh areal Li₂S loading also displays high capacity of 962.6 mA g⁻¹. The composite cathode with high Li₂S content (56.3%) was prepared, with excellent performance exhibited: the capacity is 741 mAh g⁻¹ after 30 times of cycling at a current density of 0.2 mA cm⁻².

Without additional sulfide electrolyte, the composite cathode materials were prepared by one-step ball milling with lithium sulfide, phosphorus pentasulfide, acetylene black, and carbon nanotubes as raw materials.

中文翻译：

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全固态锂硫电池混合导电Li 2 S复合材料的合成

复合正极材料中活性材料，固体电解质和导电添加剂之间的不良界面是限制全固态锂硫电池性能的关键因素。在此，通过一步球磨的方法制备复合正极材料。在掺入导电添加剂的同时，在活性材料Li ₂ S的表面上形成硫化物电解质Li ₃ PS ₄（LPS），并同时构建了导电离子和电子网络。添加适量的碳纳米管（cnt）后，复合阴极在0.2 mA cm ^-2的电流密度下循环30次后显示出1145.2 mAh g ^-1的高比容量，并且具有超高面积Li ₂ S负载的电池也显示962.6 mA g ^-1的高容量。制备具有高Li ₂ S含量（56.3％）的复合阴极，其表现出优异的性能：在0.2mA cm ^-2的电流循环30次后，容量为741mAh g ^-1。

在不使用其他硫化物电解质的情况下，以硫化锂，五硫化二磷，乙炔黑和碳纳米管为原料，通过一步球磨制备复合正极材料。