A simple model for charge storage in a nanotube
A simple model for charge storage in a nanotube
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纳米管中电荷存储的简单模型
DOI：
10.1016/j.electacta.2015.04.177
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发表时间：
2015
影响因子：
6.6
通讯作者：
W. Schmickler
中科院分区：
文献类型：
--
作者：
W. Schmickler
我们考虑与离子液体接触的窄纳米管；离子的大小应该相差很大，以至于只有一种离子可以进入管子。对于管内给定数量的等离子，离子之间的距离由库仑斥力决定。利用之前从密度泛函理论获得的结果，我们计算了相等离子系综的能量，包括平衡位置附近的振动。对于大型管，在热力学极限下，由于熵的原因，在零电荷下产生的容量会发散。然后它迅速增加，经过最大值，并随着离子之间的距离随着电荷的增加而减小而变小。小纳米管表现出离散的充电步骤，让人想起量子点。
We consider a narrow nanotube in contact with an ionic liquid; the sizes of the ions are supposed to be so different that only one kind of ion can enter the tube. For a given number ofNequal ions in the tube, the distance between the ions is determined by Coulomb repulsion. Using results obtained previously from density functional theory, we calculate the energy of an ensemble of equal ions, including vibrations about the equilibrium positions. For large tubes, in the thermodynamic limit, the resulting capacity diverges at zero charge for entropic reasons. It then increases rapidly, passes through a maximum, and becomes smaller as the distance between the ions decreases with increasing charge. Small nanotubes exhibit discrete charging steps reminiscent of quantum dots.
影响因子：
8.6
作者：
Bazant, Martin Z.;Storey, Brian D.;Kornyshev, Alexei A.
通讯作者：
Kornyshev, Alexei A.