Significantly enhanced hydrogen storage in metal-organic frameworks via spillover
Significantly enhanced hydrogen storage in metal-organic frameworks via spillover
复制标题
DOI：
10.1021/ja056831s
复制
发表时间：
2006-01-25
影响因子：
15
通讯作者：
Yang, RT
中科院分区：
文献类型：
--
作者：
Li, YW;Yang, RT
由于缺乏安全有效的储氢系统，氢在燃料电池汽车中的应用受到了限制。目前，还没有可行的存储技术能够满足美国能源部的目标。多孔金属有机骨架（mof）是一种新型的、潜在的储氢材料。到目前为止，在环境温度下，mof仍然不可能实现任何显著的储氢能力。在这里，我们首次报道了通过氢解离和溢出的一种非常简单的技术，在室温下在MOF-5和IRMOF-8中储存了大量的氢。因此，MOF-5和IRMOF-8的氢吸收量可以分别提高3.3和3.1倍（在10 MPa和298 K时达到近2 wt %）。而且，等温线是完全可逆的。这些发现表明，我们的技术适用于多种MOF材料的储氢，因为它们的结构与MOF-5和IRMOF-8相似。
The utilization of hydrogen in fuel-cell powered vehicles is limited by the lack of a safe and effective system for hydrogen storage. At the present time, there is no viable storage technology capable of meeting the DOE targets. Porous metal−organic frameworks (MOFs) are novel and potential candidates for hydrogen storage. Until now it is still not possible to achieve any significant hydrogen storage capacity in MOFs at ambient temperature. Here, we report, for the first time, significant amounts of hydrogen storage in MOF-5 and IRMOF-8 at ambient temperature by using a very simple technique via hydrogen dissociation and spillover. Thus, hydrogen uptakes for MOF-5 and IRMOF-8 can be enhanced by a factor of 3.3 and 3.1, respectively (to nearly 2 wt % at 10 MPa and 298 K). Furthermore, the isotherms are totally reversible. These findings suggest that our technique is suitable for hydrogen storage in a variety of MOF materials because of their similar structures as MOF-5 and IRMOF-8.