氢气储存
化学
Crystal(编程语言)
巴(单位)
球形填料
晶体工程
晶体结构
氢
化学工程
材料科学
结晶学
金属有机骨架
纳米技术
复合材料
有机化学
气象学
吸附
工程类
物理
程序设计语言
超分子化学
计算机科学
作者
Kuthuru Suresh,Darpandeep Aulakh,Justin Purewal,Donald S. Siegel,Mike Veenstra,Adam J. Matzger
摘要
Metal–organic frameworks (MOFs) are promising materials for hydrogen storage that fail to achieve expected theoretical values of volumetric storage density due to poor powder packing. A strategy that improves packing efficiency and volumetric hydrogen gas storage density dramatically through engineered morphologies and controlled-crystal size distributions is presented that holds promise for maximizing storage capacity for a given MOF. The packing density improvement, demonstrated for the benchmark sorbent MOF-5, leads to a significant enhancement of volumetric hydrogen storage performance relative to commercial MOF-5. System model projections demonstrate that engineering of crystal morphology/size or use of a bimodal distribution of cubic crystal sizes in tandem with system optimization can surpass the 25 g/L volumetric capacity of a typical 700 bar compressed storage system and exceed the DOE targets 2020 volumetric capacity (30 g/L). Finally, a critical link between improved powder packing density and reduced damage upon compaction is revealed leading to sorbents with both high surface area and high density.
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