The sluggish redox kinetics of polysulfides in lithiumesulfur (LieS) batteries are a significant obstacle to their widespread adoption as energy storage devices. However
recent studies have shown that tungsten oxide (WO
3
) can facilitate the conversion kinetics of polysulfides in LieS batteries. Herein
we fabricated host materials for sulfur using nitrogen-doped carbon nanotubes (N-CNTs) and WO
3
. We used low-cost components and simple procedures to overcome the poor electrical conductivity that is a disadvantage of metal oxides. The composites of WO
3
and N-CNTs (WO
3
/N-CNTs) create a stable framework structure
fast ion diffusion channels
and a 3D electron transport network during electrochemical reaction processes. As a result
the WO
3
/N-CNT-Li
2
S
6
cathode demonstrates high initial capacity (1162 mA·h·g
-1
at≥0.5 C)
excellent rate performance (618 mA·h·g
-1
at 5.5 C)
and a low capacity decay rate (0.093% up to 600 cycles at 2 C). This work presents a novel approach for preparing tungsten oxide/carbon composite catalysts that facilitate the redox kinetics of polysulfide conversion.
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