Fabrication and Characterization of SnO2/Graphene Composites as High Capacity Anodes for Li-Ion Batteries

Authors

Abirami Dhanabalan, Department of Mechanical and Materials Engineering, Florida International UniversityFollow
Xifei Li, Department of Mechanical and Materials Engineering, Florida International University
Richa Agrawal, Department of Mechanical and Materials Engineering, Florida International UniversityFollow
Chunhui Chen, Department of Mechanical and Materials Engineering, Florida International UniversityFollow

Date of this Version

11-15-2013

Document Type

Article

Abstract

Tin-oxide and graphene (TG) composites were fabricated using the Electrostatic Spray Deposition (ESD) technique, and tested as anode materials for Li-ion batteries. The electrochemical performance of the as-deposited TG composites were compared to heat-treated TG composites along with pure tin-oxide films. The heat-treated composites exhibited superior specific capacity and energy density than both the as-deposited TG composites and tin oxide samples. At the 70th cycle, the specific capacities of the as-deposited and post heat-treated samples were 534 and 737 mA·h/g, respectively, and the corresponding energy densities of the as-deposited and heat-treated composites were 1240 and 1760 W·h/kg, respectively. This improvement in the electrochemical performance of the TG composite anodes as compared to the pure tin oxide samples is attributed to the synergy between tin oxide and graphene, which increases the electrical conductivity of tin oxide and helps alleviate volumetric changes in tin-oxide during cycling.

Comments

Originally published in Nanomaterials.

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This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Recommended Citation

Dhanabalan, A.; Li, X.; Agrawal, R.; Chen, C.; Wang, C. Fabrication and Characterization of SnO2/Graphene Composites as High Capacity Anodes for Li-Ion Batteries. Nanomaterials 2013, 3, 606-614.