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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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Optimization of metal dispersion in doped graphitic materials for hydrogen storage

Cited 71 times inthomson ciCited 48 times inthomson ci
Title
Optimization of metal dispersion in doped graphitic materials for hydrogen storage
Author
Kim, GyubongJhi, Seung-HoonPark, NoejungLouie, Steven G.Cohen, Marvin L.
Keywords
MOLECULAR-HYDROGEN; GRAPHENES; BINDING; ENERGY
Issue Date
2008-08
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.78, no.8, pp.085408 -
Abstract
The noncovalent hydrogen binding on transition-metal atoms dispersed on carbon clusters and graphene is studied with the use of the pseudopotential density-functional method. It is found that the presence of acceptorlike states in the absorbents is essential for enhancing the metal adsorption strength and for increasing the number of hydrogen molecules attached to the metal atoms. Particular configurations of boron substitutional doping are found to be very efficient for providing such states and thus enhancing storage capacity. Optimal doping conditions are suggested based on our calculations for the binding energy and ratio between metal and hydrogen molecules.
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DOI
10.1103/PhysRevB.78.085408
ISSN
2469-9950
Appears in Collections:
PHY_Journal Papers
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