关键词: 3D structuring extrinsic porosity metal‐organic frameworks molecular sieving

来  源:   DOI:10.1002/advs.202002368   PDF(Sci-hub)   PDF(Pubmed)

Abstract:
The structuring of the metal-organic framework material ZIF-8 as films and membranes through the vapor-phase conversion of ZnO fractal nanoparticle networks is reported. The extrinsic porosity of the resulting materials can be tuned from 4% to 66%, and the film thickness can be controlled from 80 nm to 0.23 mm, for areas >100 cm2. Freestanding and pure metal-organic frameworks (MOF) membranes prepared this way are showcased as separators that minimize capacity fading in model Li-S batteries.
摘要:
据报道,通过ZnO分形纳米颗粒网络的气相转化,将金属有机骨架材料ZIF-8构造为薄膜和膜。所得材料的外部孔隙率可以从4%调整到66%,薄膜厚度可以控制在80纳米到0.23毫米之间,面积>100cm2。以这种方式制备的独立式和纯金属有机骨架(MOF)膜被展示为隔板,可最大程度地减少Li-S模型电池中的容量衰减。
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