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Lithium-sulfur batteries have received lots of attention due to their high energy density and cheap material. The poor electrical conductivity and slow electrochemical kinetics of sulfur hinder their application. Here, we in situ grow Ni 12 P 5  on carbon nanotube to prepare composites as sulfur host. Electrochemical tests show that Ni 12 P 5  acts as an electrocatalyst in the lithium-sulfur batteries, initiating the oxidation of Li 2 S 6  and Li 2 S 4  at higher potentials, significantly improving the reaction kinetics during charging and discharging. The CNT@Ni 12 P 5 /S composite exhibited 1352 mAh/g initial discharge capacity at 0.1 C and a retention capacity of 85% after 100 cycles at 0.2 C.

integrated ferroelectrics

Catalytic Conversion of Ni 12 P 5  in Situ on the Surface of Carbon Nanotubes to Promote Polysulfide Conversion in High-Performance Lithium-Sulfur Batteries