Fabrication of Li-intercalated bilayer graphene

We have succeeded in fabricating Li-intercalated bilayer graphene on silicon carbide. The low-energy electron diffraction from Li-deposited bilayer graphene shows a sharp 3×3R30° pattern in contrast to Li-deposited monolayer graphene. This indicates that Li atoms are intercalated between two adjacen...

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Main Authors: K. Sugawara, K. Kanetani, T. Sato, T. Takahashi
Format: Article
Language:English
Published: AIP Publishing LLC 2011-06-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.3582814
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author K. Sugawara
K. Kanetani
T. Sato
T. Takahashi
author_facet K. Sugawara
K. Kanetani
T. Sato
T. Takahashi
author_sort K. Sugawara
collection DOAJ
description We have succeeded in fabricating Li-intercalated bilayer graphene on silicon carbide. The low-energy electron diffraction from Li-deposited bilayer graphene shows a sharp 3×3R30° pattern in contrast to Li-deposited monolayer graphene. This indicates that Li atoms are intercalated between two adjacent graphene layers and take the same well-ordered superstructure as in bulk C6Li. The angle-resolved photoemission spectroscopy has revealed that Li atoms are fully ionized and the π bands of graphene are systematically folded by the superstructure of intercalated Li atoms, producing a snowflake-like Fermi surface centered at the Γ point. The present result suggests a high potential of Li-intercalated bilayer graphene for application to a nano-scale Li-ion battery.
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spelling doaj.art-d84dff0dde4c4a3884ef18684b8cf7932022-12-22T02:16:06ZengAIP Publishing LLCAIP Advances2158-32262011-06-0112022103022103-510.1063/1.3582814003102ADVFabrication of Li-intercalated bilayer grapheneK. Sugawara0K. Kanetani1T. Sato2T. Takahashi3WPI Research Center, Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, JapanDepartment of Physics, Tohoku University, Sendai 980-8578, JapanDepartment of Physics, Tohoku University, Sendai 980-8578, JapanWPI Research Center, Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, JapanWe have succeeded in fabricating Li-intercalated bilayer graphene on silicon carbide. The low-energy electron diffraction from Li-deposited bilayer graphene shows a sharp 3×3R30° pattern in contrast to Li-deposited monolayer graphene. This indicates that Li atoms are intercalated between two adjacent graphene layers and take the same well-ordered superstructure as in bulk C6Li. The angle-resolved photoemission spectroscopy has revealed that Li atoms are fully ionized and the π bands of graphene are systematically folded by the superstructure of intercalated Li atoms, producing a snowflake-like Fermi surface centered at the Γ point. The present result suggests a high potential of Li-intercalated bilayer graphene for application to a nano-scale Li-ion battery.http://dx.doi.org/10.1063/1.3582814
spellingShingle K. Sugawara
K. Kanetani
T. Sato
T. Takahashi
Fabrication of Li-intercalated bilayer graphene
AIP Advances
title Fabrication of Li-intercalated bilayer graphene
title_full Fabrication of Li-intercalated bilayer graphene
title_fullStr Fabrication of Li-intercalated bilayer graphene
title_full_unstemmed Fabrication of Li-intercalated bilayer graphene
title_short Fabrication of Li-intercalated bilayer graphene
title_sort fabrication of li intercalated bilayer graphene
url http://dx.doi.org/10.1063/1.3582814
work_keys_str_mv AT ksugawara fabricationofliintercalatedbilayergraphene
AT kkanetani fabricationofliintercalatedbilayergraphene
AT tsato fabricationofliintercalatedbilayergraphene
AT ttakahashi fabricationofliintercalatedbilayergraphene