Recently, lithium–sulfur (Li–S) batteries have been demonstrated as promising next-generation energy-storage devices. However, their practical application is hindered by poor cycling performance and rate capability. In this study, we prepared a multifunctional interlayer composed of SnO₂ nanowires (NWs) and conductive carbon paper (CP) to enhance the electrochemical performance of Li–S batteries. This SnO₂ NWs@CP interlayer could efficiently adsorb lithium polysulfides and provide electron-conductive pathways to the sulfur electrode, leading to suppression of the polysulfide shuttle effect and enhancement of the electrochemical reaction kinetics for cycling performance and rate capability. A lithium-sulfur cell fabricated with SnO₂ NWs@CP interlayer at a high sulfur loading amount (ca. 4.0 mg cm⁻²) could deliver a high specific capacity of 815 mAh g⁻¹ (based on sulfur) even after 100 cycles at 0.2 C with a high coulombic efficiency of 98.2%. These results demonstrate that the introduction of multifunctional SnO₂ NWs@CP interlayers should be a promising new strategy for the development of high-energy-density Li–S batteries.

最近，锂硫（Li–S）电池已被证明是有前途的下一代储能设备。然而，它们的实际应用受到不良的循环性能和速率能力的阻碍。在这项研究中，我们准备了由SnO ₂纳米线（NWs）和导电碳纸（CP）组成的多功能中间层，以增强Li-S电池的电化学性能。该SnO ₂ NWs @ CP中间层可以有效地吸附多硫化锂，并为硫电极提供电子传导路径，从而抑制了多硫化物的穿梭效应，并增强了电化学反应动力学，从而提高了循环性能和速率能力。用SnO ₂制成的锂硫电池即使在0.2 C下循环100次，库仑效率为98.2，NWs @ CP夹层在高硫负载量（约4.0 mg cm ^-2）下仍可提供815 mAh g ^-1（基于硫）的高比容量。％。这些结果表明，引入多功能SnO ₂ NWs @ CP中间层应该是开发高能量密度Li-S电池的有希望的新策略。