Hollow heterostructured hosts play a pivotal role in enhancing the efficiency of lithium-selenium sulfide batteries by addressing volume fluctuations, shuttle effects, and reaction kinetics of active sulfur/selenium-based species. However, constructing hollow hosts with multiphase interfaces and a unique design for optimizing the utilization and conversion of aggregated SeS within their cavities remains a formidable challenge. In this context, we introduce a novel concept−triphasic ZnS/SnS/CuS heterostructured ultrathin nanoflakes filled in N-doped carbon nanoboxes (ZnS/SnS/CuS@NC)−as an innovative host for Li-SeS batteries. The ZnS/SnS/CuS@NC host facilitates dense contact between polar conductive sulfides and aggregated SeS in the cores, thereby enhancing the actual capacity of SeS. Experimental and theoretical analyses reveal that the ZnS/SnS/CuS@NC host possesses high binding energies and catalytic activity for polysulfides/polyselenides, attributed to increased adsorption interfaces, imbalanced charge distribution among interfaces, and high electrical conductivity. The sophisticated structure and composition of the ZnS/SnS/CuS@NC-SeS cathode yield impressive performance, achieving a high capacity of 565.9 mAh g after 500 cycles at 1.5 C, and a notable area capacity of 4.16 mAh cm at 0.5 C (5.3 mg cm). This study unveils, for the first time, the functional role of the triphasic metal sulfide host and provides in-depth insights into its atomic-level accelarating conversion mechanism towards SeS. The research findings pave the way for designing and optimizing hollow hosts, offering a promising direction for realizing high-performance Li-SeS batteries and beyond.

中文翻译：

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填充氮掺杂碳纳米盒的超薄异质结构 ZnS/SnS2/CuS 纳米片作为 Li-SeS2 电池的新型阴极主体

中空异质结构主体通过解决活性硫/硒基物质的体积波动、穿梭效应和反应动力学，在提高锂硒硫化物电池的效率方面发挥着关键作用。然而，构建具有多相界面和独特设计的空心主体以优化其空腔内聚集的 SeS 的利用和转化仍然是一个艰巨的挑战。在此背景下，我们引入了一个新概念——填充氮掺杂碳纳米盒的三相 ZnS/SnS/CuS 异质结构超薄纳米片 (ZnS/SnS/CuS@NC)——作为 Li-SeS 电池的创新主体。 ZnS/SnS/CuS@NC 主体促进极性导电硫化物与核中聚集的 SeS 之间的致密接触，从而提高 SeS 的实际容量。实验和理论分析表明，ZnS/SnS/CuS@NC 主体对多硫化物/多硒化物具有高结合能和催化活性，这归因于吸附界面的增加、界面间不平衡的电荷分布和高电导率。 ZnS/SnS/CuS@NC-SeS 正极的复杂结构和成分产生了令人印象深刻的性能，在 1.5 C 下循环 500 次后实现了 565.9 mAh g 的高容量，在 0.5 C 下的面积容量为 4.16 mAh cm（5.3毫克厘米）。这项研究首次揭示了三相金属硫化物主体的功能作用，并深入了解其向 SeS 的原子级加速转化机制。研究结果为设计和优化空心主体铺平了道路，为实现高性能Li-SeS电池及其他电池提供了有前景的方向。