With the use of a conducting ceramic-based solid-phase hybrid electrolyte, the batteries can maintain safe and stable operation during the reversible insertion/extraction of sodium ions by the suppression of sodium dendrites. Here, Sn–C nanocomposites are prepared by a simple one-pot synthesis process, and they have a unique structure in which nanosized Sn particles are embedded in an amorphous carbon host derived from sucrose. The Sn–C nanocomposite is used to fabricate a solid-phase sodium-ion battery with a Na₃Zr₂Si₂PO₁₂ ceramic-based hybrid solid electrolyte. The Sn–C-based solid-phase sodium battery shows high electrochemical performance with a high discharge capacity of 669.9 mA h g⁻¹ at 0.2 C with a Coulombic efficiency close to 100%. The electrochemical alloy mechanism of the Sn–C nanocomposite is investigated by X-ray photoelectron spectroscopy. The good electrochemical performance demonstrates the advantages of using the Na₃Zr₂Si₂PO₁₂ ceramic-based hybrid solid electrolyte and Sn–C nanocomposite in solid-phase sodium ion batteries.

通过使用导电陶瓷基固相混合电解质，电池可以通过抑制钠枝晶在钠离子可逆插入/脱出过程中保持安全稳定运行。在这里，Sn-C 纳米复合材料是通过简单的一锅法合成工艺制备的，它们具有独特的结构，其中纳米尺寸的 Sn 颗粒嵌入在源自蔗糖的无定形碳主体中。Sn-C纳米复合材料用于制造具有Na ₃ Zr ₂ Si ₂ PO ₁₂陶瓷基混合固体电解质的固相钠离子电池。Sn-C 基固相钠电池显示出高电化学性能，放电容量高达 669.9 mA h g ^-1在 0.2 C 下，库仑效率接近 100%。通过X射线光电子能谱研究了Sn-C纳米复合材料的电化学合金机理。良好的电化学性能证明了在固相钠离子电池中使用基于 Na ₃ Zr ₂ Si ₂ PO ₁₂陶瓷的混合固体电解质和 Sn-C 纳米复合材料的优势。