Flake-like molybdenum trioxide/carbon nanotube composite as an effective sulfur host for high-performance lithium–sulfur battery cathode

Multifunctional α-MoO3 Nanobelt Interlayer with the Capacity Compensation Effect for High-Energy Lithium–Sulfur Batteries

“…In view of the bottleneck of the LiPS shuttle effect, researchers have made significant efforts to overcome it. Introducing metal oxide, carbon, and sulfides with polar nature into the cathode is promising in slowing down the sulfur loss over cycles, as such functional additives can bond or adsorb the dissociative LiPSs in the electrolyte via electrostatic interaction or Van der Waals force. − Li et al developed flake-like MoO 3 particles that served as the polar chemisorption medium toward the LiPSs for alleviating the shuttle effect, and the obtained cells showed an excellent capacity decay rate (0.075%) over 800 cycles at 0.5C rate . In addition, Yang et al proposed that the twinborn TiO 2 –TiN heterostructure combining adsorptive TiO 2 with conducting TiN can enable a smooth trapping–diffusion–conversion process in LiPSs throughout the cycles .…”

“…7−11 Li et al developed flake-like MoO 3 particles that served as the polar chemisorption medium toward the LiPSs for alleviating the shuttle effect, and the obtained cells showed an excellent capacity decay rate (0.075%) over 800 cycles at 0.5C rate. 12 In addition, Yang et al proposed that the twinborn TiO 2 −TiN heterostructure combining adsorptive TiO 2 with conducting TiN can enable a smooth trapping−diffusion−conversion process in LiPSs throughout the cycles. 13 However, in many cases, these catalysts embedded into the cathode will fall off from their original position into the electrolyte when sulfur lithiates from the solid S 8 ring to soluble LiPSs, which could cause catalyst deactivation and internal short-circuit.…”