Transition metal sulfides have shown to improve the performance of lithium-sulfur batteries both with liquid and solid electrolytes. In this work, the beneficial effect of copper sulfide for enabling high areal capacity lithium-sulfur all-solid-state batteries is shown. Copper sulfide-carbon (CuSC) and three different copper sulfide-sulfur-carbon (CuSS) composites are investigated as positive electrodes in all-solid-state lithium-sulfur batteries. The composites are prepared via facile and low-cost mechanochemical ball-milling. It is found that the CuS/C ratio greatly influences the redox properties of the CuSC cathode. Scanning electron microscopy, ex-situ X-ray diffraction, and galvanostatic cycling were also conducted to evaluate the CuSS composite electrodes in Li|LiI-Li₃PS₄|CuS-S-C solid-state cells. High mass loading cells made using these composite electrodes deliver capacities as high as 1600 mAh g^-1_(CuS+S) and 7 mAh cm^-2 at 20 °C. The higher density of CuS also leads to larger volumetric capacities, up to 3900 mAh cm^-3_(CuS+S), thus enabling a potential energy density gain up to 15% with respect to a conventional Carbon-Sulfur cathode.

过渡金属硫化物已显示出可同时改善液态和固态电解质的锂硫电池的性能。在这项工作中，显示了硫化铜对于实现高面积容量的锂硫全固态电池的有益作用。在全固态锂硫电池中，研究了硫化铜-碳（CuSC）和三种不同的硫化铜-硫-碳（CuSS）复合材料作为正极。该复合材料是通过简便，低成本的机械化学球磨制备的。发现CuS / C比极大地影响CuSC阴极的氧化还原性质。还进行了扫描电子显微镜，异位X射线衍射和恒电流循环，以评估Li | LiI-Li ₃ PS _4中的CuSS复合电极。| CuS-SC固态电池。使用这些复合电极制成的高质量_{称重传感器}在20°C时可提供高达1600 mAh g ^-1 _{（CuS + S）}和7 mAh cm ^-2的容量。较高的CuS密度还会导致更大的体积容量，最高3900 mAh cm ^-3 _{（CuS + S）}，因此相对于传统的碳-硫阴极，可以实现高达15％的势能密度增益。