The effect of electric field on hydrogen storage for B/C/N sheets

The effect of electric field on hydrogen storage for B/C/N sheets
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电场对B/C/N片材储氢的影响

DOI:
10.1007/s11224-011-9795-y
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发表时间:
2011-05
期刊:
Struc Chem
影响因子:
--
通讯作者:
Hong Zhang
Hong Zhang
中科院分区:
其他
文献类型:
--
作者:
JInghu Guo;Hong Zhang

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采用第一性原理计算方法,研究了H2在B/C/N片(包括BCN、BC 2N和BC 3 N)中的吸附行为,讨论了外加电场对H2在BCN和BC 2N片上吸附的影响.对于单分子H2吸附在BCN和BC 2N片上,随着电场强度的增加,吸附能急剧增加,在电场F = 0.050 a. u时,最大吸附能可达0.55 eV。BCN和BC 2N片上均吸附有一层H2,最大储氢量为5.1wt%。计算得到的平均吸附能比无场情况下的平均吸附能大。
Using first-principles calculations, we investigate the adsorption behaviors of H2in B/C/N sheets (including BCN, BC2N, and BC3N) and discuss the effect of external electric fields on H2adsorbed for BCN and BC2N sheets. For a single H2adsorbed on BCN and BC2N sheets, the adsorption energy increases dramatically with the electric field intensity increasing, and the maximum adsorption energy can reach 0.55 eV in the electric field ofF= 0.050 a.u. and one layer H2can adsorb on BCN and BC2N sheets, corresponding to the maximum hydrogen storage capacity of 5.1 wt%. The average adsorption energy calculated larger than that of in the field-free case.
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