Synergistic electron highways and mechanical buffering in a dual-carbon confined MoS2 anode for superior sodium-ion storage
Li J. Suo G. Lin C. Li J. Luo X. Yang G. Habib L. Kalkozova Z.K. Naseem K.
1 February 2026Elsevier B.V.
Chemical Engineering Journal
2026#529
Molybdenum disulfide (MoS2) is a promising high-capacity anode for sodium-ion batteries (SIBs), yet its practical viability is hindered by sluggish kinetics and catastrophic structural pulverization during cycling. Herein, we introduce a synergistic dual‑carbon confinement strategy to resolve these critical issues, realized within a hierarchical CNTs/MoS2@NC composite. This architecture uniquely integrates an internal three-dimensional network of carbon nanotubes (CNTs) as uninterrupted electron highways with an external nitrogen-doped carbon (NC) shell that acts as a robust, ion-permeable armor against mechanical strain. This multi-scale engineering approach not only guarantees rapid charge transfer throughout the electrode but also effectively buffers the immense volume changes inherent to the sodiation process. Consequently, the CNTs/MoS2@NC anode demonstrates an exceptional rate capability (388.1 mAh g−1 at 2.5 A g−1) and, critically, outstanding long-term durability, retaining 357.5 mAh g−1 after 1000 cycles at a high current density of 2.0 A g−1. Furthermore, a full cell constructed with a Na3V2(PO4)3 cathode delivers a stable capacity of 193.0 mAh g−1 (based on the anode/cathode mass) over 200 cycles, underscoring its practical relevance. This work demonstrates that engineering synergistic electronic and mechanical confinement is a powerful strategy to unlock the full potential of conversion-type anodes, offering a scalable blueprint for next-generation SIBs.
Dual‑carbon confinement , Fast sodiation kinetics , Hierarchical architecture , MoS2 anode , Sodium-ion batteries
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Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xian, 710021, China
Faculty of Physics and Technology, Al Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty, 050040, Kazakhstan
School of Materials and Environmental Engineering, Hunan University of Humanities Science and Technology, Loudi, 417000, China
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials
Faculty of Physics and Technology
School of Materials and Environmental Engineering
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Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026