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

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 fi...

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Bibliographic Details
Published in:MRS communications 2020-03, Vol.10 (1), p.25-31
Main Authors: Kim, Doyoung, Luo, Yongguang, Tiwari, Anand P., Hwang, Hee Min, Oh, Simgeon, Lee, Keunsik, Lee, Hyoyoung
Format: Article
Language:English
Subjects:
Anodes
Biomaterials
Carbon
Characterization and Evaluation of Materials
Electrodes
Graphene
Heat
Lithium-ion batteries
Materials Engineering
Materials Science
Multilayers
Nanoparticles
Nanotechnology
Polymer Sciences
Rechargeable batteries
Research Letter
Scanning electron microscopy
Silicon
Spectrum analysis
Thermal reduction
Thin films
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Summary: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.
ISSN:2159-6859
2159-6867
DOI:10.1557/mrc.2020.14