Cobalt sulfide/ carbon cloth composites with conversion reactions mechanism as anodes for sodium-ion storage have attracted tremendous attention due to high theoretical capacity and binder-free. However, the severe volume change and exfoliation of cobalt sulfide makes composite materials cycle stability and rate capability unsatisfactory. In this work, we report dual carbon materials composited with Co₉S₈ through C-S bonds to further stabilize the structure of the composite (Co₉S₈/CC@C). Dual C-S bonds can provide ultrafast charge transport paths between Co₉S₈ and carbon materials, further ensure the stable reversible conversion reaction process. Furthermore, dual C-S bonds effectively prevent exfoliation of Co₉S₈ from carbon cloth, significantly improved structural stability of the composite. Benefiting from dual C-S bonds, the Co₉S₈/CC@C composite electrode delivers high reversible capacity of 785.6 mAh g⁻¹ at 0.1 A g⁻¹ after 100 cycles with capacity retention of 74.81 %. Notably, it preserves a considerable capacity of 417.2 mAh g⁻¹ after 1000 cycles at 5 A g⁻¹. This work provides a good reference for improving cycle stability and rate performance of Co₉S₈-based electrodes to designing advanced anodes for sodium-ion batteries.

具有转化反应机理的硫化钴/碳布复合材料作为钠离子存储负极，由于具有高理论容量和无粘合剂等优点，引起了人们的极大关注。然而，硫化钴剧烈的体积变化和剥落使复合材料的循环稳定性和倍率性能不能令人满意。_{在这项工作中，我们报道了通过 CS 键与 Co 9} S ₈复合的双碳材料，以进一步稳定复合材料的结构（Co ₉ S ₈ /CC@C）。_{双 CS 键可以在 Co 9} S ₈之间提供超快的电荷传输路径和碳材料，进一步保证了稳定的可逆转化反应过程。此外，双CS键有效地防止了Co ₉ S ₈从碳布上剥离，显着提高了复合材料的结构稳定性。得益于双 CS 键，Co ₉ S ₈ /CC@C 复合电极在 0.1 A g ^-1循环 100 次后可提供 785.6 mAh g ^-1的高可逆容量，容量保持率为 74.81 %。^{值得注意的是，它在 5 A g -1}下循环 1000 次后仍保持相当大的 417.2 mAh g ^-1容量。该工作为提高Co ₉ S的循环稳定性和倍率性能提供了很好的参考。₈基电极为钠离子电池设计先进的阳极。