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Journal Article

Interaction between hydrogen molecules and metallofullerenes


Yoon,  Mina
Theory, Fritz Haber Institute, Max Planck Society;

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Yoon, M., Yang, S., & Zhang, Z. (2009). Interaction between hydrogen molecules and metallofullerenes. The Journal of Chemical Physics, 131(6): 064707. doi:10.1063/1.3197006.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-F85D-9
Within first-principles density functional theory, we explore the feasibility of using metallofullerenes as efficient hydrogen storage media. In particular, we systematically investigate the interaction between hydrogen molecules and La encapsulated all-carbon fullerenes, Cn (20≤n≤82), focusing on the role of transferred charges between the metal atoms and fullerenes on the affinity of hydrogen molecules to the metallofullerenes. Our calculations show that three electrons are transferred from La atom to fullerene cages, while the induced charges are mostly screened by the fullerene cages. We find the local enhancement of molecular hydrogen affinity to the fullerenes to be sensitively dependent on the local bonding properties, rather than on the global charging effects.