High hydrogen-adsorption-rate material based on graphane decorated with alkali metals
2012; American Physical Society; Volume: 86; Issue: 8 Linguagem: Inglês
10.1103/physrevb.86.085435
ISSN1550-235X
AutoresLiubov Yu. Antipina, Павел В. Аврамов, Seiji Sakai, H. Naramoto, Manabu Ohtomo, Shiro Entani, Yoshihiro Matsumoto, Павел Б. Сорокин,
Tópico(s)Graphite, nuclear technology, radiation studies
ResumoThe graphane with chemically bonded alkali metals (Li, Na, K) was considered as potential material for hydrogen storage. The ab initio calculations show that such material can adsorb as many as four hydrogen molecules per Li, Na, and K metal atom. These values correspond to 12.20, 10.33, and 8.56 wt$%$ of hydrogen, respectively, and exceed the DOE requirements. The thermodynamic analysis shows that Li-graphane complex is the most promising for hydrogen storage with ability to adsorb three hydrogen molecules per metal atom at 300 K and pressure in the range of 5--250 atm.
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