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Sulfur particles coated with inorganic-organic hybrid membranes as cathode active material and batteries containing the particles
Sulfur particles coated with inorganic-organic hybrid membranes as cathode active material and batteries containing the particles
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机译:涂有无机有机杂化膜作为正极活性物质的硫颗粒以及包含该颗粒的电池
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摘要
A core-shell composite sulfur particle containing a core of elemental sulfur having homogeneously dispersed particles of a conductive carbon and a polyelectrolyte polymer; and a shell containing a hybrid membrane coating of branched polyethyleneimine (bPEI) on the core and at least one sequential set of a negatively charged clay nanosheet and a further coating of bPEI encapsulating the core is provided. In the sulfur particle the dispersed particles of conductive carbon are associated with the polyelectrolyte polymer. A cathode having an active material containing the core-shell composite sulfur particle and a sulfur loading of 1.0 mg S/cm2 to 10 mg/cm2 and a battery containing the cathode are also provided.
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机译:一种核-壳复合硫颗粒,其包含元素硫的核,所述元素硫具有均匀分散的导电碳和聚电解质聚合物颗粒;提供了一种壳,其包含在核上的分支聚乙烯亚胺(bPEI)的杂化膜涂层和至少一个顺序的一组带负电的粘土纳米片和另一种包裹核的bPEI涂层。在硫颗粒中,分散的导电碳颗粒与聚电解质聚合物缔合。阴极,其具有包含核-壳复合硫颗粒和1.0 mg S / cm 2 Sup>至10 mg / cm 2 Sup>的硫含量的活性材料,以及一种包含所述还提供阴极。
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