Abstract Rational design of sulfur host materials is the key to the development of superior lithium-sulfur batteries. Here, we designed a composite conductive scaffold that is expected to establish a conductive, adsorption, and catalytic barrier layer to inhibit polysulfide shuttle and improve Lithium-sulfur battery performance. The large scaffold of the carbon nanotube framework enables long-range conductivity and effective exposure of active sites. The hollow polyhedron produced by the pyrolysis bimetallic organic framework MOFs precursor contributes to a variety of adsorption and catalytic sites, enhancing sulfur confinement and conversion, thus contributing to rapid and long-lasting sulfur electrochemistry. Due to these favorable features, Lithium-sulfur batteries achieve good electrochemical performance, exerts an initial discharge capacity of 1320.8 mA h g−1 at 0.1 C.

中文翻译：

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嵌入 CoNi N 共掺杂多孔多面体的碳纳米管对优质锂硫电池的双重作用

摘要 硫主体材料的合理设计是开发优质锂硫电池的关键。在这里，我们设计了一种复合导电支架，有望建立导电、吸附和催化屏障层，以抑制多硫化物穿梭并提高锂硫电池性能。碳纳米管框架的大支架能够实现长距离导电和活性位点的有效暴露。由热解双金属有机骨架 MOFs 前驱体产生的空心多面体有助于多种吸附和催化位点，增强硫的限制和转化，从而有助于快速和持久的硫电化学。由于这些有利的特性，锂硫电池实现了良好的电化学性能，