Lithium–sulfur (Li–S) batteries are regarded as one of the most promising next-generation high-energy storage systems owing to their ultrahigh theoretical specific capacity (1675 mAh g_-1) and energy density (2600 Wh kg_-1). However, their practical application remains hindered by severe volume expansion, the polysulfide shuttle effect, and sluggish sulfur redox kinetics. To address these challenges, we designed an efficient electrocatalytic cathode material (Co₃O₄/ZnO@RGO) composed of Co₃O₄/ZnO bimetallic oxide heterojunctions integrated with a porous and conductive reduced graphene oxide aerogel (RGO). The introduction of the three-dimensional RGO network provides a stable host matrix and highly conductive electron pathways for sulfur species, effectively mitigating structural deformation and enhancing charge-transfer kinetics. Meanwhile, the v heterojunctions grown on the RGO surface serve as active adsorption–catalysis centers, facilitating the chemical anchoring and catalytic conversion of lithium polysulfides (LiPSs), thereby accelerating redox reaction kinetics and suppressing the shuttle effect. Benefiting from the synergistic effect between the heterojunction interfaces and the conductive aerogel framework, the Co₃O₄/ZnO @RGO cathode delivers a high initial discharge capacity of 1608 mAh g_-1 at 0.1 C and retains 1160 mAh g_-1 even at 1 C, with an ultralow average capacity decay rate of only 0.16% per cycle over 400 cycles, demonstrating excellent long-term cycling stability. Furthermore, under a high sulfur loading of 3 mg cm_-2, the cell still exhibits outstanding electrochemical performance after 100 cycles. This work highlights a dual-functional strategy that combines heterojunction interface synergy with a conductive aerogel framework, offering a promising pathway for constructing advanced Li–S battery systems with enhanced redox activity and structural stability.

Lithium-sulfur Batteries, Bimetallic Oxides, Reduced Graphene Oxide Aerogel, Shuttle Effect