Density functional theory prediction for diffusion of lithium on boron-doped graphene surface |
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Authors: | Shuanghong GaoZhaoyu Ren Lijuan WanJiming Zheng Ping GuoYixuan Zhou |
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Institution: | National Key Laboratory of photoelectric technology and Functional materials (Culture Base), National photoelectric technology and Functional Materials and Application of Science and Technology International Cooperation Base, Institute of Photonics and Photon-Technology, Northwest University, Xi’an 710069, PR China |
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Abstract: | The density functional theory (DFT) investigation shows that graphene has changed from semimetal to semiconductor with the increasing number of doped boron atoms. Lithium and boron atoms acted as charge contributors and recipients, which attracted to each other. Further investigations show that, the potential barrier for lithium diffusion on boron-doped graphene is higher than that of intrinsic graphene. The potential barrier is up to 0.22 eV when six boron atoms doped (B6C26), which is the lowest potential barrier in all the doped graphene. The potential barrier is dramatically affected by the surface structure of graphene. |
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Keywords: | Graphene Boron Potential barrier |
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