The　development　of　sulfur　host　materials　with　high　catalytic　activity　to　tackle　the　shuttling　effect　of　polysulfides　and　their　slow　conversion　kinetics　is　a　prospective　strategy　for　improving　the　performance　of　lithium-sulfur　batteries.　However,　it　may　result　in　excessively　thick　Li2S　films　that　cover　the　entire　electrode　structure,　consequently　weakening　the　functionalization　effect　of　the　sulfur　host.　Herein,　we　developed　a　hierarchical　structured　sulfur　host　material　composed　of　a　three-dimensional　composite　conductive　network　of　carbon　nanotubes　and　Ni　nanoparticles,　along　with　Ni0.85Se　nanosheets　grown　on　its　surface.　The　synergistic　effects　of　hierarchical　structure　and　conductive　network　accelerate　the　electron　and　ion　transport,　mitigate　the　volume　expansion　during　lithiation,　enhance　the　conversion　kinetics　of　polysulfides,　and　importantly　prevent　the　agglomeration　of　thick　Li2S　films,　which　results　in　a　significant　improvement　in　the　electrochemical　performance　of　the　sulfur　cathode.　The　developed　CC@CNT/Ni-Ni0.85Se-S　exhibits　excellent　rate　performance　and　long-term　stability,　achieving　a　discharge-specific　capacity　of　965　mA　h　g−1　at　3　C　and　maintaining　a　discharge-specific　capacity　of　789　mA　h　g−1　even　after　300　cycles　at　1　C.　Notably,　the　capacity　retention　rate　is　as　high　as　92.9%　for　100　cycles　at　0.1　C,　even　with　a　high　sulfur　loading　of　4.0　mg　mg−2.　This　work　not　only　effectively　mitigates　the　agglomeration　of　Li2S　film　but　also　offers　a　novel　design　approach　for　the　practical　application　of　high-energy-density　lithium-sulfur　batteries.　(Figure　presented.)　©　Science　China　Press　2025.