NLi4+超碱团簇的结构及储氢性能的理论研究

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采用密度泛函理论(B3LYP)方法,在6-311++G(d,p)基组水平上对NLi4超碱团簇和NLi4+超碱离子团簇的几何结构和稳定性等物理化学性质进行理论计算,进而研究NLi4团簇和NLi4+团簇的储氢性能.结果表明:NLi4团簇和NLi4+团簇结构稳定性均比较高,但是通过理论计算表明NLi4团簇不能有效吸附氢分子,而NLi4+团簇在吸附氢分子过程中不仅结构稳定,而且NLi4+团簇中的每一个锂原子均可有效吸附3个氢分子,氢分子平均吸附能为1.517~2.931 kCal/mol,储氢质量分数达36.67 wt%,合适的吸附能和较高储氢容量表明NLi4+团簇可有望成为良好的储氢材料.
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