Combining transition metal oxides with polarity and 3D porous carbon materials to leverage their synergistic effects is an effective strategy for addressing the challenges in lithium–sulfur batteries. In this work, in order to accelerate catalytic conversion of polysulfides, the co‐growth strategy is proposed, in which transition metal spinel oxide NiCo 2 O 4 (NCO) is anchored on the surface of the reduced graphene oxide aerogel (rGA) to form hierarchical structure NCO@rGA‐13. The results show that the specific surface area of NCO@rGA‐13 is 226 m 2 g −1 , which is higher than rGA (133 m 2 g −1 ), indicating that the addition of NCO can increase the reactive sites and adsorption sites. Besides, it has been found that NCO@rGA‐13/S cathode delivers an initial discharge specific capacity of 1112 mAh g −1 at 1 C, keeping a capacity of 722 mAh g −1 after 500 cycles and a low capacity fading rate of 0.07% per cycle. In situ ultraviolet‐visible spectroscopy confirms that the concentration of for NCO@rGA‐13 is higher than rGA, indicating that NCO@rGA‐13 can accelerate the conversion of polysulfides. Therefore, this work presents an efficient strategy to simultaneously achieve dual adsorption and catalytic conversion of polysulfides, which is conducive to facilitating the industrialization of LSBs.
Lu et al. (Thu,) studied this question.