MoS ₂ ‐Modified Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes Encapsulating Ni Nanoparticles Enabling Synergistic Adsorption–Catalysis for High‐Performance Lithium–Sulfur Batteries

ABSTRACT

The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects. Specifically, high‐yield bamboo‐like nitrogen‐doped carbon nanotubes (BNCNTs) were embedded with Ni nanoparticles via vapor–liquid–solid growth, with the resulting material used as a substrate for the uniform deposition of ultrathin MoS ₂ nanosheets containing sulfur vacancies (Ni‐MoS ₂ /BNCNTs). Ni nanoparticles were found to optimize the charge distribution, promote the conversion of LiPSs, and effectively reduce the reaction energy barrier through synergistic effects with BNCNTs. The hollow conductive BNCNTs network effectively confines the LiPSs shuttle, accelerates ion/electron transport, and mitigates volume changes. The outer layer of MoS ₂ nanosheets provides a large surface area with abundant catalytic sites, effectively anchoring LiPSs and accelerating their conversion. Benefiting from these multiple synergistic mechanisms, the Ni‐MoS ₂ /BNCNTs‐based Li–S battery exhibited outstanding cycling stability, with a capacity decay rate of only 0.06% per cycle over 500 cycles at 1.0 A g ⁻¹ . Therefore, this study provides an efficient strategy for the design of sulfur host materials and a new pathway for the development of high‐performance Li–S batteries.