Commercial lithium sulfur batteries are hindered by unstable and unreliable cycling performances due to the dissolution and shuttle of lithium polysulfides. Defect engineering with plentiful active sites and high surface binding energies to restrain polysulfides dissolution and promote the redox conversion polysulfides. Here, we present a nano carbon intercalated by W₁₈O₄₉ nanorods composite materials as functional sulfur host. With high W/O ratio of 0.367 in tungsten oxide famliy (WO_x), W₁₈O₄₉ achieves abundant oxygen vacancy in intrinsic atomic structure. These oxygen vacancies not only provide stable active sites to stabilize the Li₂S but also immobilize polysulfides by strong coulombic interactions of W-S and Li-O bondings. Accordingly, this cathode achieves stable long cycling performance with decay rate of 0.038 % per cycle at 2 C for 1200 cycles. With high sulfur loading of 6.4 mg·cm⁻², the cathode also shows stable cycling at 0.2 C for 150 cycles. This immobilizations of polysulfides by oxygen vacancy engineering in W₁₈O₄₉ is referential for developing commercial useable Li-S batteries.

由于多硫化锂的溶解和穿梭，商业锂硫电池受到不稳定和不可靠的循环性能的阻碍。具有丰富活性位点和高表面结合能的缺陷工程，可抑制多硫化物溶解并促进氧化还原转化多硫化物。在这里，我们提出了一种由 W ₁₈ O ₄₉纳米棒复合材料插入的纳米碳作为功​​能性硫主体。W ₁₈ O ₄₉在氧化钨族 (WO _x ) 中具有 0.367 的高 W/O 比，在本征原子结构中实现了丰富的氧空位。这些氧空位不仅提供了稳定的活性位点来稳定 Li ₂S 还通过 WS 和 Li-O 键的强库仑相互作用固定多硫化物。因此，该正极实现了稳定的长循环性能，在 2 C 下 1200 次循环的衰减率为每个循环 0.038%。在 6.4 mg·cm ^{-2 的}高硫负载量下，正极在 0.2 C 下也表现出稳定循环 150 次。这种通过氧空位工程在 W ₁₈ O _{49 中}固定多硫化物对于开发可商业使用的锂硫电池具有参考意义。