Metal decorated monolayer BC2N for hydrogen storage

Metal decorated monolayer BC2N for hydrogen storage
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用于储氢的金属装饰单层BC2N

DOI:
10.1016/j.commatsci.2012.03.028
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发表时间:
2012-07
影响因子:
3.3
通讯作者:
Jia, Yu
Jia, Yu
中科院分区:
材料科学3区
文献类型:
--
作者:
Wang, Yu Sheng;Yuan, Peng Fei;Li, Meng;Jiang, Wei Fen;Sun, Qiang;Jia, Yu

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利用第一性原理密度泛函计算,我们表明,金属修饰的单层BC 2N可以作为一个高容量的储氢介质的重量密度为7.69-10.0wt.%。特别地,Li和Ca修饰的BC 2N被系统地研究,并且发现由于金属吸附原子之间的库仑排斥,在没有金属聚集的情况下用于储氢是可行的。极化机制和轨道杂化作用均有助于H2分子的吸附,平均吸附能分别为0.24和0.26eV/H2。
Using first-principles density functional calculations, we show that metal decorated monolayer BC2N can serve as a high-capacity hydrogen storage medium with the gravimetric density of 7.69–10.0wt.%. In particular, Li and Ca decorated BC2N are systematically investigated and found to be feasible for hydrogen storage without metal clustering owing to the Coulomb repulsion between the metal adatoms. Both the polarization mechanism and the orbital hybridizations contribute to the adsorption of H2molecules and the average adsorption energies are 0.24 and 0.26eV/H2, respectively.
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