“Graphene-Wrapped” Complex Hydrides as High-Capacity, Regenerable Hydrogen Storage Materials

Technical Report · Fri Nov 30 00:00:00 EST 2018

DOI:https://doi.org/10.2172/1490684· OSTI ID:1490684

Liu, Di-Jia ^[1]

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1. Argonne National Lab. (ANL), Argonne, IL (United States)

This project focused on the development of a new class of hydrogen storage material, hydride@graphene, for the next-generation H₂ powered fuel cell vehicles. The new approach was based on a recent technology breakthrough through the collaboration between Argonne National Laboratory (ANL) and Shanghai Jiao Tong University (SJTU). A “nanoencapsulated” sodium borohydride-graphene composite, NaBH₄@graphene, was successfully synthesized using a simple solvent-based method. The new composite offers regenerable high H₂ storage capacity in multiple dehydrogenation and rehydrogenation cycles. Under this short project, we successfully synthesized catalyst-doped NaBH₄@graphene composite and demonstrated five dehydrogenation (DH) and rehydrogenation (RH) cycles with measured gravimetric capacity > 7.4 wt% at 406 ºC. We also successfully demonstrated the improvement in hydrogen release kinetics by lowering DH temperature of 320 degree over bulk NaBH₄ or 138 degree over NaBH₄@G as the benchmark at the beginning of the project. We collaborated with members of the Hydrogen Materials – Advanced Research Consortium (HyMARC) team in computational modeling, structural characterization and performance measurement.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office (HFTO)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1490684
• Report Number(s): ANL-19/03; 149377
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
25 ENERGY STORAGE
H2 storage
graphene
hydride