Elaborately converting hierarchical NiCo–LDH to rod–like LDH–decorated MOF as interlayer for high–performance lithium–sulfur battery

In Situ Encapsulation of Cobalt Selenide Nanoparticles in N-Doped Carbon Nanotubes with a Full Sulfiphilic Surface as a Catalytic Interlayer for Lithium–Sulfur Batteries

“…To solve the above problems, various designed materials such as porous carbons, − metal compounds, − or their combination − have been used as the interlayer at the cathode/separator interface, instead of the host of sulfur, and proven effective to reduce the shuttle effect of LiPSs. Such an integration of material design and configuration modification of sulfur cathodes is simple and feasible to achieve a remarkable improvement of sulfur utilization and cycle stability of LSBs. − The involved interlayers can not only effectively prevent the dissolved LiPSs from diffusing toward the Li anode side via both physical restriction and chemical confinement but also act as the second current collector for the electrochemical redox of the trapped LiPSs. − In addition, the polysulfide adsorption–catalysis ability of the designed catalytic materials plays a key role in regulating the redox reaction of LiPSs. Thus, the shuttle effect can be greatly suppressed, and sulfur utilization can be significantly improved.…”