Densified HKUST-1 Monoliths as a Route to High Volumetric and Gravimetric Hydrogen Storage Capacity.
Densified HKUST-1 Monoliths as a Route to High Volumetric and Gravimetric Hydrogen Storage Capacity.
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高密度HKUST-1单体作为高体积和重量储氢容量的途径。
DOI：
10.1021/jacs.2c04608
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发表时间：
2022-08-03
影响因子：
15
通讯作者：
Fairen-Jimenez, David
中科院分区：
文献类型：
--
作者：
Madden, David Gerard;O'Nolan, Daniel;Rampal, Nakul;Babu, Robin;Camur, Ceren;Al Shakhs, Ali N.;Zhang, Shi-Yuan;Rance, Graham A.;Perez, Javier;Casati, Nicola Pietro Maria;Cuadrado-Collados, Carlos;O'Sullivan, Denis;Rice, Nicholas P.;Gennett, Thomas;Parilla, Philip;Shulda, Sarah;Hurst, Katherine E.;Stavila, Vitalie;Allendorf, Mark D.;Silvestre-Albero, Joaquin;Forse, Alexander C.;Champness, Neil R.;Chapman, Karena W.;Fairen-Jimenez, David
我们目前正在见证氢(H2)经济的曙光，H2将很快成为供暖、运输以及长距离和长期储能的主要燃料。在各种可能性中，氢可以作为加压气体、低温液体或通过吸附到多孔材料上的固体燃料来储存。金属有机骨架(MOF)作为一种吸氢材料，在体积和重量两个方面都具有最高的理论储氢密度。然而，将氢气用作运输燃料的一个关键瓶颈是缺乏能够在保持其吸附性能的同时将MOF塑造成实际配方的致密化方法。在这里，我们报告了对MOF数据库的高通量筛选和深入分析，以找到最佳的材料，然后合成、表征和性能评估用于储氢的最佳单块MOF(MOF)。经过致密化后，这种单MOF在50bar和77K下储存了46g L-1氢，在25和50bar的工作压力下分别释放了41g和42g L-1氢，部署在一个温度-压力组合(25-50bar/77K→5bar/160K)摆动输气系统中。这一性能表明，与基准材料相比，输送氢气所需的操作压力降低了高达80%，与压缩氢气相比，降低了83%。我们的发现代表着高密度材料在体积氢存储应用中的应用向前迈出了实质性的一步。
We are currently witnessing the dawn of hydrogen (H2) economy, where H2 will soon become a primary fuel for heating, transportation, and long-distance and long-term energy storage. Among diverse possibilities, H2 can be stored as a pressurized gas, a cryogenic liquid, or a solid fuel via adsorption onto porous materials. Metal–organic frameworks (MOFs) have emerged as adsorbent materials with the highest theoretical H2 storage densities on both a volumetric and gravimetric basis. However, a critical bottleneck for the use of H2 as a transportation fuel has been the lack of densification methods capable of shaping MOFs into practical formulations while maintaining their adsorptive performance. Here, we report a high-throughput screening and deep analysis of a database of MOFs to find optimal materials, followed by the synthesis, characterization, and performance evaluation of an optimal monolithic MOF (monoMOF) for H2 storage. After densification, this monoMOF stores 46 g L–1 H2 at 50 bar and 77 K and delivers 41 and 42 g L–1 H2 at operating pressures of 25 and 50 bar, respectively, when deployed in a combined temperature–pressure (25–50 bar/77 K → 5 bar/160 K) swing gas delivery system. This performance represents up to an 80% reduction in the operating pressure requirements for delivering H2 gas when compared with benchmark materials and an 83% reduction compared to compressed H2 gas. Our findings represent a substantial step forward in the application of high-density materials for volumetric H2 storage applications.
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