Fluorine-doped SnO2 nanoparticles anchored on reduced graphene oxide as a high-performance lithium ion battery anode

• Published in: Journal of power sources Vol. 362; pp. 20 - 26
• Main Authors: Cui, Dongming, Zheng, Zhong, Peng, Xue, Li, Teng, Sun, Tingting, Yuan, Liangjie
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-09-2017
• Subjects: Anode; F doping; Lithium ion battery; Reduced graphene oxide; SnO2; Lithium ion battery; SnO2; F doping; Reduced graphene oxide; Anode
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2017.07.024

The composite of fluorine-doped SnO2 anchored on reduced graphene oxide (F-SnO2/rGO) has been synthesized through a hydrothermal method. F-SnO2 particles with average size of 8 nm were uniformly anchored on the surfaces of rGO sheets and the resulting composite had a high loading of F-SnO2 (ca. 90%). Benefiting from the remarkably improved electrical conductivity and Li-ion diffusion in the electrode by F doping and rGO incorporation, the composite material exhibited high reversible capacity, excellent long-term cycling stability and superior rate capability. The electrode delivered a large reversible capacity of 1037 mAh g−1 after 150 cycles at 100 mA g−1 and high rate capacities of 860 and 770 mAh g−1 at 1 and 2 A g−1, respectively. Moreover, the electrode could maintain a high reversible capacities of 733 mAh g−1 even after 250 cycles at 500 mA g−1. The outstanding electrochemical performance of the as-synthesized composite make it a promising anode material for high-energy lithium ion batteries.
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•F-SnO2/rGO was synthesized through a hydrothermal method.•F-SnO2 nanoparticles were uniformly anchored on the surfaces of rGO sheets.•Electrical conductivity and Li-ion diffusion were remarkably improved.•The composite material exhibited superior performance in Li-ion batteries.