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Highly stable multi-layered silicon-intercalated graphene anodes for lithium-ion batteries

Published online by Cambridge University Press:  26 February 2020

Doyoung Kim
Affiliation:
Centre for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon16419, Republic of KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon16419, Republic of Korea
Yongguang Luo
Affiliation:
Department of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
Anand P. Tiwari
Affiliation:
Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon34141, Republic of Korea
Hee Min Hwang
Affiliation:
Centre for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon16419, Republic of KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon16419, Republic of Korea
Simgeon Oh
Affiliation:
Centre for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon16419, Republic of KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon16419, Republic of Korea
Keunsik Lee
Affiliation:
Department of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
Hyoyoung Lee*
Affiliation:
Centre for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon16419, Republic of KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon16419, Republic of KoreaDepartment of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
*
Address all correspondence to Hyoyoung Lee at hyoyoung@skku.edu
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Abstract

To avoid degradation of silicon anodes in lithium-ion batteries (LIBs), the authors report a new two-dimensional multi-layered Si-intercalated rGO (rGO/Si) anode prepared by direct growth of Si into a porous multi-layered reduced graphene oxide (rGO) film. Direct Si deposition onto the porous rGO film allows the Si layers to be intercalated into the film via in situ replacement of the oxygen groups of the multi-layered graphene oxide (GO) with Si through thermal reduction of the GO film. The porous rGO acts as a cushion against the expansion of the Si layer during lithiation, preventing the Si from being pulverized and producing highly stable LIBs.

Information

Type
Research Letters
Copyright
Copyright © Materials Research Society 2020

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