Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 30, Pages 13729-13739Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c04608
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Funding
- European Research Council (ERC) under the European Union [ERC-2016-COG 726380]
- Innovate UK [104384]
- EPSRC IAA [IAA/RG85685]
- Science Foundation Ireland [21/PATH-S/9648]
- European Union [801165, MF20210297]
- MINECO [PID2019-108453GB-C21, PCI2020-111968]
- Engineering and Physical Sciences Research Council, United Kingdom [EP/S002995/1]
- UKRI Future Leaders Fellowship [MR/T043024/1]
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy
- Fuel Cell Technologies Office through the Hydrogen Storage Materials Advanced Research Consortium (HyMARC)
- U.S. Department of Energy's National Nuclear Security Administration [DE-NA0003525]
- SWING beamline [20200126]
- Cambridge International Scholarship
- Trinity Henry Barlow Scholarship (Honorary)
- Marie Curie Actions (MSCA) [801165] Funding Source: Marie Curie Actions (MSCA)
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We are witnessing the dawn of hydrogen economy, where hydrogen is becoming a primary fuel for heating, transportation, and energy storage. Metal-organic frameworks (MOFs) have emerged as promising adsorbent materials for hydrogen storage, but their use has been limited by a lack of densification methods. In this study, researchers screened and analyzed a database of MOFs to find an optimal material for hydrogen storage, and successfully synthesized and evaluated a monolithic MOF with high storage performance at lower operating pressures.
We are currently witnessing the dawn of hydrogen (H-2) economy, where H-2 will soon become a primary fuel for heating, transportation, and long-distance and long-term energy storage. Among diverse possibilities, H-2 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 H-2 storage densities on both a volumetric and gravimetric basis. However, a critical bottleneck for the use of H-2 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 H-2 storage. After densification, this monoMOF stores 46 g L-1 H-2 at 50 bar and 77 K and delivers 41 and 42 g L-1 H-2 at operating pressures of 25 and 50 bar, respectively, when deployed in a combined temperature-pressure (25-50 bar/77 K & RARR; 5 bar/160 K) swing gas delivery system. This performance represents up to an 80% reduction in the operating pressure requirements for delivering H-2 gas when compared with benchmark materials and an 83% reduction compared to compressed H-2 gas. Our findings represent a substantial step forward in the application of high-density materials for volumetric H-2 storage applications.
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