Tin/graphene-based composites were synthesized as easy-to-prepare alternative anode materials in lithium-ion batteries (LIBs). Reduced graphene oxide (rGO) was obtained from the oxidation of pristine graphite by modified Hummers’ method followed by thermal treatment at 500 °C for 5 h under N2 atmosphere. Nitrogen-doped graphene (NrGO) sheets were prepared via thermal annealing of rGO and melamine (1:5 by weight) at 800 °C for 1 h under N2 environment. The chemical reduction method was used to synthesize the composites. The Sn content in Sn/rGO and Sn/NrGO was varied as 10 and 20 wt%. The rGO and NrGO supporting materials had large surface areas and were exfoliated graphite structure. The powder X-ray diffraction patterns showed that Sn/rGO and Sn/NrGO composites contained Sn and graphene-based supporter. The electron microscopic measurements granted the composite morphology, in which they consisted of small Sn particles anchored on rGO and NrGO surfaces. The 20Sn/rGO and 20Sn/NrGO composites delivered large reversible specific capacities of 793 and 755 mAh g− 1, respectively, at a current density of 100 mA g− 1. The prepared composites also provide high stability, indicating the promising anode performance for LIBs.
|Number of pages||9|
|Journal||Journal of Materials Science: Materials in Electronics|
|Publication status||Published - 2017 Dec 1|
Bibliographical noteFunding Information:
Acknowledgements This work was financially supported by Center of Excellence in Materials Science and Technology under the Administration of Materials Science Research Center of Chiang Mai University, Graduate School of Chiang Mai University, the Center for Innovation in Chemistry, Postgraduate Education and Research Program in Chemistry (PERCH-CIC), and the Promotion of Science and Technology Talented Project (DPST) under the Royal Thai Government.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering