Encapsulating tin disulfide nanoparticles in carbon nanofibers for durable sodium storage

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-02-21 DOI:10.1016/j.jssc.2025.125279

Ying Zhu , Zhao Li , Jingjing Wang , Zhaozhao Zhu , Rui Wu , Xiaobin Niu , Jinxia Jiang , Hanchao Li , Jun Song Chen

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Abstract

Due to its unique layered structure and high theoretical capacity, tin disulfide (SnS₂) is regarded as a promising anode material for sodium-ion batteries. However, its practical application has been hindered by relatively poor conductivity and severe volumetric changes during cycling. Herein, carbon nanofiber encapsulated SnS₂ nanoparticles, SnS₂@CNF, has been synthesized via a gaseous sulfidation process from a Sn-based metal-organic compound (Sn-MOC)@PAN electrospun precursor. Benefiting from precise control of the SnS₂ particle size, sodium-ion transport has been facilitated with superior sodium storage performance. The SnS₂@CNF anode exhibits long-term cycling stability (457 mAh g⁻¹ after 1500 cycles at 5 A g⁻¹) and high reversible capacity (661 mAh g⁻¹ after 100 cycles at 0.5 A g⁻¹). When paired with the Na₃V₂(PO₄)₃ cathode, the SnS₂@CNF//NVP presented an energy density of 161 Wh kg⁻¹, indicating its significant potential for practical applications.

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.