Lithium-sulfur　batteries　possess　the　merits　of　low　cost　and　high　theoretical　energy　density　but　suffer　from　the　shuttle　effect　of　lithium　polysulfides　and　slow　redox　kinetics　of　sulfur.　Herein,　novel　Co0.85Se　nanoparticles　embedded　in　nitrogen-doped　carbon　nanosheet　arrays　(Co0.85Se/NC)　were　constructed　on　carbon　cloth　as　the　self-supported　host　for　a　sulfur　cathode　using　a　facile　fabrication　strategy.　The　interconnected　porous　carbon-based　structure　of　the　Co0.85Se/NC　could　facilitate　the　rapid　electron　and　ion　transfer　kinetics.　The　embedded　Co0.85Se　nanoparticles　can　effectively　capture　and　catalyze　lithium　polysulfides,　thus　accelerating　the　redox　kinetics　and　stabilizing　sulfur　cathodes.　Therefore,　the　Co0.85Se/NC-S　cathode　could　maintain　a　stable　cycle　performance　for　400　cycles　at　1C　and　deliver　a　high　discharge　specific　capacity　of　1361,　1001,　and　810　mAh　g-1　at　current　densities　of　0.1,　1,　and　3C,　respectively.　This　work　provides　an　efficient　design　strategy　for　high-performance　lithium-sulfur　batteries　with　high　energy　densities.　©　2021　American　Chemical　Society.