Characterization of H2 Adsorption Sites: Where Are the Hydrogens Stored in the Materials?
Chapter
Overview
Research
Identity
Additional Document Info
Other
View All
Overview
abstract
Springer-Verlag GmbH Germany 2017. The most significant parameters such as pore size and binding energy need to be quantified to design advanced absorbents and improve their hydrogen uptake. The in situ and ex situ examination of hydrogen storage materials is helpful to provide the information with hydrogen favorable sites. The most common techniques to probe hydrogen molecules are: Neutron powder diffraction (NPD) Inelastic neutron scattering (INS) Variable temperature Infrared spectroscopy Solid-state nuclear magnetic resonance (SSNMR) In this chapter, several examples demonstrated how the hydrogen molecules store in the host materials. Knowing which structural characteristics contribute to hydrogen uptake became the design guidance because the effective moieties can be added by elegant synthetic methods. Scientists can introduce strong functional groups, modify the weak interacting parts, or tailor the structural geometry in the candidate materials based on the analysis results of material-H 2 interactions. Ligand elongation, interpenetration, impregnation, mixed-ligand, as well as introduction of open metal sites and charged frameworks were proposed to enhance H 2 uptake in the storage materials.
