Akademik Veri Yönetim Sistemi
Sustainable Materials and Technologies, cilt.48, 2026 (SCI-Expanded, Scopus)
Room-temperature sodium–sulfur (RT Na-S) batteries are emerged as a highly promising candidate due to sulfur's remarkably high theoretical capacity, advantageous gravimetric energy density, the natural availability and low cost of both sodium and sulfur. This study reports the synthesis of Zn@NPC-9, Bi-Zn@NPC-7, and Bi-Zn@NPC-9 composites using a temperature-controlled heterostructure design strategy to develop advanced sulfur cathodes. These materials synergistically combine strong chemical anchoring from polar oxides, catalytic enhancement from Bi/Bi2O3 heterointerfaces, and efficient electron and ion transport through a nitrogen-doped porous carbon matrix for RT Na-S batteries. The discharge specific capacities of S/Bi-Zn@NPC-9 attain values of 893.4, 874.7, 868.7, 855.6, 725.6, and 607.4 mAh g−1 at rates of 0.3, 0.5, 1.0, 5.0, and 10.0C (1C = 1675 mAh g−1). Upon restoring the current density to 5.0C, the reversible capacity achieve is 760.2 mAh g−1, exhibiting excellent capacity preservation after 5000 cycles. The double-membrane Na-S battery confuguration of S/Bi-Zn@NPC-9 exhibits a lower initial and stabilized capacity (443.6 mAh g−1 at 5C) but remarkably smooth and long-term cycling stability over 12,000 cycles. The double-membrane configuration effectively suppresses polysulfide migration and shuttle effects, minimizing active material loss and side reactions at the Na anode.