In this paper, bimetallic sulfide Co₉S₈/N−C@MoS₂ dodecahedral heterogeneous nanocages (DHNCs) are designed and synthesized via pyrolysis and sulfidation. The Co₉S₈/N−C@MoS₂ DHNCs with unique structure and composition display superior lithium storage performance (a reversible capacity of approximate 557 mA h g⁻¹ at 5 A g⁻¹ after 400 cycles) and potassium storage performance (a reversible capacity of about 100 mA h g⁻¹ at 1 A g⁻¹ after 100 cycles). The remarkable electrochemical properties are attributed to the synergistic effect of bimetallic sulfides and the special polyhedral hollow structure with the conductive N‐doped mesoporous carbon. This method could be used to develop new types of electrode materials with a heterogeneous hollow nanocages structure, which could enhance structural stability and mass transport kinetics for lithium‐ion batteries and potassium‐ion batteries.

中文翻译：

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双金属硫化物Co9S8 / N-C @ MoS2十二面体异质纳米笼，用于增强Li / K储存

本文设计并通过热解和硫化合成了双金属硫化物Co ₉ S ₈ / NC @ MoS ₂十二面体异质纳米笼（DHNCs）。具有独特结构和成分的Co ₉ S ₈ / N-C @ MoS ₂ DHNC显示出卓越的锂存储性能（400个循环后在5 A g ^-1下可逆容量约为557 mA h g ^-1）。1 A g ^-1时约100 mA hg ^-1的可逆容量100个周期后）。出色的电化学性能归因于双金属硫化物的协同作用以及具有导电性N掺杂介孔碳的特殊多面体空心结构。该方法可用于开发具有异质空心纳米笼结构的新型电极材料，从而可增强锂离子电池和钾离子电池的结构稳定性和质量传输动力学。