High-Entropy Sulfide Nanoarchitectures with Triple-Shelled Hollow Design for Durable Sodium–Ion Batteries

作者：Mingyang Chen, Yan Liu, Zhenchun Fang, Yinan Wang, Shaonan Gu, Guowei Zhou · 发表于：Nanomaterials · 年份：2025 · DOI：10.3390/nano15120881 · 被引用次数：9 · 研究领域：Advancements in Battery Materials、Quantum Dots Synthesis And Properties、Advanced Battery Materials and Technologies

Metal sulfides are promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacities. However, their practical application is limited by significant volume extension and sluggish Na+ diffusion during cycling, which lead to rapid capacity degradation and poor long-term stability. In this work, we report the rational design of a hollow triple-shelled high-entropy sulfide (NaFeZnCoNiMn)9S8, synthesized through sequential templating method under hydrothermal conditions. Transmission electron microscopy confirms its well-defined three-shelled architecture. The inter-shell voids effectively buffer Na+ insertion/desertion-induced volume extension, while the tailored high-entropy matrix enhances electronic conductivity and accelerates Na+ transport. This synergistic design yields outstanding performance, including a high initial Coulombic efficiency (ICE) of 94.1% at 0.1 A g−1, low charge-transfer resistance (0.32~2.54 Ω), fast Na+ diffusion efficiency (10−8.5–10−10.5 cm2 s−1), and reversible capacity of 582.6 mAh g−1 after 1600 cycles at 1 A g−1 with 91.2% capacity retention. These results demonstrate the potential of high-entropy, multi-shelled architectures as a robust platform for next-generation durable SIB anodes.