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- Title
Scalable Fabrication of Si-Graphene Composite as Anode for Li-ion Batteries.
- Authors
Lou, Ding; Chen, Shuyi; Langrud, Strauss; Razzaq, Amir Abdul; Mao, Mingyang; Younes, Hammad; Xing, Weibing; Lin, Tim; Hong, Haiping
- Abstract
A facile and scalable method is reported to fabricate Si-graphene nanocomposite as anode material for Li-ion batteries (LIBs) with high capacity and capacity retention performance. The Si-graphene electrode showed an initial discharge capacity of 1307 mAh g−1 at a current rate of 0.1C. At the 25th cycle, the electrode retained a discharge capacity of 1270 mAh g−1, with an excellent capacity retention of 97%. At the 50th cycle, the electrode still retained high capacity retention of 89%. The improved capacity retention of Si-graphene anode compared with Si anode is attributed to the mechanical flexibility of graphene that compromises the volume expansion of Si during the lithiation/delithiation process. The electrochemical impedance measurement further confirms the enhanced electrical conductivity and the denser solid-electrolyte-interface of the Si-graphene electrode. This fabrication approach is cost-effective and easy to scale up compared to known techniques, making it a promising candidate for commercializing Si-based anode for LIBs.
- Subjects
LITHIUM-ion batteries; ELECTRIC conductivity; NANOCOMPOSITE materials; ANODES; SUPERIONIC conductors; ELECTRODES; LITHIATION
- Publication
Applied Sciences (2076-3417), 2022, Vol 12, Issue 21, p10926
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app122110926