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arXiv 1201.2249cond-mat.mtrl-scicond-mat.mes-hall
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石墨烯/锂离子电池

Graphene/Li-Ion battery

N. Kheirabadi, A. Shafiekhani

摘要:

采用密度泛函理论计算了锂离子在石墨烯团簇中的存储状态。计算了每个团簇的吸附能、自旋极化、电荷分布、电子能隙、表面曲率和偶极动量。单Li原子掺杂的石墨烯具有自旋极化特性,不同自旋极化的电子会有不同的能隙。计算结果表明,两个较大团簇之间的较小团簇更有利于石墨烯锂离子电池的性能提高,从而提出了最合适的石墨烯负极结构。

英文摘要:

Density function theory calculations were carried out to clarify storage states of Lithium (Li) ions in graphene clusters. The adsorption energy, spin polarization, charge distribution, electronic gap, surface curvature and dipole momentum were calculated for each cluster. Li-ion adsorbed graphene, doped by one Li atom is spin polarized, so there would be different gaps for different spin polarization in electrons. Calculation results demonstrated that a smaller cluster between each two larger clusters is preferable, because it could improve graphene Li-ion batteries; consequently, the most proper graphene anode structure has been proposed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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