Nickel Oxide Decorated Halloysite Nanotubes as Sulfur Host Materials for Lithium–Sulfur Batteries

Lithium–sulfur batteries with high energy density still confront many challenges, such as polysulfide dissolution, the large volume change of sulfur, and fast capacity fading in long-term cycling. Herein, a naturally abundant clay material, halloysite, is introduced sulfur host material cathode Li–S batteries. Nickel oxide nanoparticles are embedded into halloysite nanotubes ([email protected]site) by hydrothermal calcination treatment to improve affinity polysulfides. The [email protected] composite loaded (S/[email protected]) employed batteries, which combines physical confinements tubular particles good chemical adsorption ability NiO. S/[email electrode exhibits discharge 1205.47 mAh g−1 at 0.1 C. In addition, it demonstrates enhanced cycling stability, retaining ≈60% initial after 450 cycles 0.5 synthesized can provide promising prospect valuable insight applying natural materials