Abstract
Long-duration storage of hydrogen is necessary for coupling renewable H2 with stationary fuel cell power applications. In this work, aluminum formate (ALF), which adopts the ReO3-type structure, is shown to have remarkable H2 storage performance at non-cryogenic (>120 K) temperatures and low pressures. The most promising performance of ALF is found between 120 K and 160 K and at 10 bar to 20 bar. The study illustrates H2 adsorption performance of ALF over the 77 K to 296 K temperature range using gas isotherms, in situ neutron powder diffraction, and DFT calculations, as well as technoeconomic analysis (TEA), illustrating ALF’s competitive performance for long-duration storage versus compressed hydrogen and leading metal-organic frameworks. In the TEA, it is shown that ALF’s storage capacity, when combined with a temperature/pressure swing process, has advantages versus compressed H2 at a fraction of the pressure (15 bar versus 350 bar). Given ALF’s performance in the 10 bar to 20 bar regime under moderate cooling, it is particularly promising for use in safe storage systems serving fuel cells.
| Original language | English |
|---|---|
| Pages (from-to) | 22150-22157 |
| Number of pages | 8 |
| Journal | Journal of the American Chemical Society |
| Volume | 145 |
| Issue number | 40 |
| DOIs | |
| State | Published - Oct 11 2023 |
Funding
We acknowledge NIST for partial funding for this work. The authors gratefully acknowledge partial support from the Hydrogen Materials─Advanced Research Consortium (HyMARC) established as part of the Energy Materials Network under the U.S. DOE Office of Energy Efficiency and Renewable Energy (EERE), Hydrogen and Fuel Cell Technologies Office, under contract number DE-AC02-05CH11231 with Lawrence Berkeley National Laboratory (H.M.B., P.P.). A portion of this research used resources at the Spallation Neutron Source [POWGEN], a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. Y.C. and Q.Z. thank Mark Loguillo and Matt Rucker for their assistance with sample environment setup. We thank the Singapore MOE-Academic Research Fund (R-284-000-193-114) (D.M., A.K.C.), the National University of Singapore Green Energy Programme for partial funding under the project code R-284-000-185-731 (A.K.C., D.Z., P.C.), the Agency for Science, Technology and Research (U2102d2004) (D.Z.), and the Ras al Khaimah Centre for Advanced Materials (A.K.C.). Z.D. acknowledges support from a Lee Kuan Yew Postdoctoral Fellowship (22-5930-A0001). We thank Ryan Klein (NREL) for fruitful discussion.
| Funders | Funder number |
|---|---|
| Khaimah Centre for Advanced Materials | 22-5930-A0001 |
| National University of Singapore Green Energy Programme | |
| National Institute of Standards and Technology | |
| Office of Science | |
| Office of Energy Efficiency and Renewable Energy | |
| Oak Ridge National Laboratory | |
| Lawrence Berkeley National Laboratory | R-284-000-193-114 |
| Hydrogen and Fuel Cell Technologies Office | DE-AC02-05CH11231 |
| Agency for Science, Technology and Research | U2102d2004 |
