All-solid-state (ASS) Na–S batteries are promising for large-scale energy storage because of the incombustible solid electrolyte and avoiding the dissolution of intermediates. However, the poor contact between the active material and the solid electrolyte in the positive electrode leads to poor electrochemical performance. Here, we report an aqueous solution approach to fabricate Na₃SbS₄-coated Se_xS-based active materials for a Na–S battery working at room temperature. Compared with the Na₃SbS₄ and Se_xS mixed cathode, the coated cathode achieves significantly improved Na-ion diffusion kinetics and reduced impedance resistance. Additionally, the nanoparticle coating sustains the volume expansion of the cathode during cycling. The resulting batteries deliver an intensively enhanced specific capacity at various rates. Regardless of the mass loading, the Na₃SbS₄-coated cathode maintains a decent reversible capacity for the long-term discharge/charge cycling. The best battery achieves an initial discharge capacity of 509 mAh g⁻¹ at a current density of 437.4 mA g⁻¹ and capacity retention of 98.9% for 100 cycles. To the best of our knowledge, this is one of the best room temperature ASS Na–S battery so far. This work demonstrates that Na₃SbS₄ is very promising for the cathode coating purpose for ASS Na–S batteries.

全固态（ASS）Na–S电池因其不可燃的固体电解质和避免了中间体的溶解而有望用于大规模储能。然而，正极中的活性物质与固体电解质之间的不良接触导致不良的电化学性能。在这里，我们报告了一种水溶液方法，用于制造在室温下工作的Na–S电池的Na ₃ SbS ₄涂层的Se _x S基活性材料。与Na ₃ SbS ₄和Se _x的比较在混合阴极的情况下，涂覆的阴极可显着改善Na离子扩散动力学并降低阻抗阻抗。另外，纳米颗粒涂层在循环期间维持阴极的体积膨胀。所得电池以各种速率提供了增强的比容量。不管质量负荷如何，涂覆有Na ₃ SbS ₄的阴极在长期的放电/充电循环中都保持着可逆的可充电容量。最好的电池在437.4 mA g ^-1的电流密度下可达到509 mAh g ^-1的初始放电容量100次循环的容量保持率为98.9％。据我们所知，这是迄今为止最好的室温ASS Na–S电池之一。这项工作表明，Na ₃ SbS ₄对于ASS Na–S电池的阴极涂层用途非常有前途。