Densified HKUST-1 Monoliths as a Route to High Volumetric and Gravimetric Hydrogen Storage Capacity

Autor: Madden, David Gerard, Rampal, Nakul, Babu, Robin, Al Shakhs, Ali N., Zhang, Shi Yuan, Rance, Graham A., Perez, Javier, Maria Casati, Nicola Pietro, Cuadrado-Collados, Carlos, 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
Jazyk: angličtina
Rok vydání: 2022
Předmět:
ISSN: 0002-7863
1520-5126
Popis: 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.
Databáze: OpenAIRE
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