Journal
SCIENCE
Volume 368, Issue 6488, Pages 297-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaz8881
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Funding
- U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) [DE-EE0008816]
- NSF CAREER [CBET 1846707]
- U.S. Department of Energy (DOE), Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program
- ORAU [DE-SC0014664]
- Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource [NSF ECCS-1542205]
- MRSEC program at the Materials Research Center [NSF DMR-1720139]
- International Institute for Nanotechnology (IIN)
- Keck Foundation
- State of Illinois, through the IIN
- State of Illinois
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A huge challenge facing scientists is the development of adsorbent materials that exhibit ultrahigh porosity but maintain balance between gravimetric and volumetric surface areas for the onboard storage of hydrogen and methane gas-alternatives to conventional fossil fuels. Here we report the simulation-motivated synthesis of ultraporous metal-organic frameworks (MOFs) based on metal trinuclear clusters, namely, NU-1501-M (M = Al or Fe). Relative to other ultraporous MOFs, NU-1501-Al exhibits concurrently a high gravimetric Brunauer-Emmett-Teller (BET) area of 7310 m(2) g(-1) and a volumetric BET area of 2060 m(2) cm(-3) while satisfying the four BET consistency criteria. The high porosity and surface area of this MOF yielded impressive gravimetric and volumetric storage performances for hydrogen and methane: NU-1501-Al surpasses the gravimetric methane storage U.S. Department of Energy target (0.5 g g(-1)) with an uptake of 0.66 g g(-1) [262 cm(3) (standard temperature and pressure, STP) cm(-3)] at 100 bar/270 K and a 5- to 100-bar working capacity of 0.60 g g(-1) [238 cm(3) (STP) cm(-3)] at 270 K; it also shows one of the best deliverable hydrogen capacities (14.0 weight %, 46.2 g liter(-1)) under a combined temperature and pressure swing (77 K/100 bar -> 160 K/5 bar).
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