Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are emerging next-generation energy storage technology, and exploiting applicative electrode materials to accommodate the large-sized Na⁺ and K⁺ are urgently needed. Herein, an innovative composite of BiSb@Bi₂O₃/SbO_x nanoparticles encapsulated in porous carbon (BiSb@Bi₂O₃/SbO_x@C) is fabricated through a template-assisted in-situ pyrogenic decomposition and evaluated as anodes for SIBs and PIBs. The BiSb@Bi₂O₃/SbO_x@C delivers high specific capacity, superior rate capability (205 mA h g⁻¹ and 111 mA h g⁻¹ at 2 Ah g⁻¹) and good cycling stability (248 mA h g⁻¹ and 214 mA h g⁻¹ after 500 cycles at 1 A g⁻¹) in SIBs and PIBs. The excellent performance owes to the synergistic effect of Bi and Sb, the multilayer nanostructure design as well as the interconnected porous carbon network, which effectively promotes electron transport and ion diffusion, restricts volume change and enhances the electrode structure stability simultaneously. Furthermore, the capacitive behavior contributes much to the storage of sodium and potassium ions, which guarantees a superior rate capability. This research opens up new opportunities for exploring high-performance anodes for SIBs and PIBs.

钠离子电池（SIB）和钾离子电池（PIB）是新兴的下一代能量存储技术，迫切需要开发适用的电极材料来容纳大尺寸的Na ⁺和K ⁺。在此，通过模板辅助原位热解法制备了包裹在多孔碳中的BiSb @ Bi ₂ O ₃ / SbO _x纳米粒子的创新复合材料（BiSb @ Bi ₂ O ₃ / SbO _x @C），并作为阳极进行了评估。 SIB和PIB。BiSb @ Bi ₂ O ₃ / SbO _x @C具有高比容量，优异的倍率能力（205 mA汞柱）^-1和111毫安汞柱^-1在2阿克^-1）和良好的循环稳定性（248毫安汞柱^-1和214毫安汞柱^-1 1 A G 500次循环后^-1中的SIB和的PIB）。优异的性能归因于Bi和Sb的协同作用，多层纳米结构设计以及相互连接的多孔碳网络，有效地促进了电子传输和离子扩散，限制了体积变化并同时增强了电极结构的稳定性。此外，电容行为对钠和钾离子的存储有很大贡献，从而保证了优异的倍率能力。这项研究为探索用于SIB和PIB的高性能阳极提供了新的机会。