Engineering Zinc Molybdate-Anchored Nitrogen and Sulfur Doped Carbon Hybrid Electrodes for High-Performance Supercapacitors Publisher



Narimisa S ; Mouradzadegun A ; Ganjali MR
Source: Journal of Power Sources Published:2026

Abstract

In this study, a polymeric precursor, NCNT-calix[4]resorcinarene, is synthesized via covalent attachment of tetraformylcalix[4]resorcinarene to functionalized carbon nanotubes (CNTs). High-temperature carbonization of this precursor yields a nitrogen and sulfur-doped carbon material (NS-CCNT-800) with a large specific surface area, abundant electrochemically active sites, and efficient electron-transport pathways, achieving a specific capacitance of 469 F/g and 78.4% cycling stability. To further improve performance, zinc molybdate (ZnMoO4) is integrated into NS-CCNT-800, forming the ZnMoO4@NS-CCNT-800 hybrid composite, where the conductive heteroatom-doped carbon network and redox-active ZnMoO4 synergistically enhance ion/electron transport, resulting in a high specific capacitance of 1605 F/g at 1 A/g and 85.9% retention after 5000 cycles. An asymmetric supercapacitor is assembled using NS-CCNT-800 as the negative electrode and ZnMoO4@NS-CCNT-800 as the positive electrode. It delivers an energy density of 50 Wh/kg at 750 W/kg. These results highlight the synergistic effect of heteroatom-doped carbon and zinc molybdate, establishing ZnMoO4@NS-CCNT-800 as a promising high-performance electrode for next-generation energy storage systems. © 2026 Published by Elsevier B.V.