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Adsorption of hydrogen in scandium/titanium decorated nitrogen doped carbon nanotube
Authors
Lawrence Phoa Belo
Arnel Beltran
Michael Mananghaya
Publication date
1 September 2016
Publisher
Animo Repository
Abstract
Nitrogen doped Carbon Nanotube with divacancy (4ND-CNxNT) that is decorated with Scandium and Titanium as potential hydrogen storage medium using the pseudo potential density functional method was investigated. Highly localized states near the Fermi level, which are derived from the nitrogen defects, contribute to strong Sc and Ti bindings, which prevent metal aggregation and improve the material stability. A detailed Comparison of the Hydrogen adsorption capability with promising system-weight efficiency of Sc over Ti was elucidated when functionalized with 4ND-CNxNT. Finally, the (Sc/4ND)10-CNxCNT composite material has a thermodynamically favorable adsorption and consecutive adsorption energy for ideal reversible adsorption and desorption of hydrogen at room temperature such that it can hold at least 5.8 wt% hydrogen molecules at the LDA and GGA level. © 2016 Elsevier B.V
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Last time updated on 03/12/2021