We have designed and synthesized novel hollow Ni/Fe layered double hydroxide (LDH) polyhedrons as an advanced sulfur host for enhancing the performance of lithium–sulfur (Li–S) batteries. The Ni/Fe LDH host shows multiple advantages. First, the Ni/Fe LDH shells can provide sufficient sulfiphilic sites for chemically bonding with polysulfides. Second, the hollow architecture can provide sufficient inner space for both loading a large amount of sulfur and accommodating its large volumetric expansion. Moreover, once the active material is confined within the host, the shells could easily restrict the outward diffusion of polysulfides, guaranteeing prolonged cycle life even with high sulfur loading. As a result, the S@Ni/Fe LDH cathode has successfully solved the main issues related to sulfur electrodes, and it exhibits significantly improved electrochemical performances with prolonged life over 1000 cycles and excellent rate properties.

中文翻译：

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镍铁分层双氢氧化物空心多面体是锂硫电池的优质硫基质

我们设计并合成了新型空心Ni / Fe层状双氢氧化物（LDH）多面体，作为增强硫-锂（Li-S）电池性能的高级硫基质。Ni / Fe LDH基质具有多种优势。首先，Ni / Fe LDH壳层可提供足够的亚磺酰基位点，以与多硫化物进行化学键合。第二，中空结构可以提供足够的内部空间，以用于装载大量的硫并适应其大的体积膨胀。而且，一旦活性物质被限制在主体内，壳就可以轻易地限制多硫化物的向外扩散，即使在高硫负荷下也可以保证延长的循环寿命。结果，S @ Ni / Fe LDH阴极成功解决了与硫电极有关的主要问题，