Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 49, Pages 27486-27493Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b09538
Keywords
fluorine-doped tin oxide; reduced graphene oxide; anode; capacity; cycling stability
Funding
- National Natural Science Foundation of China [51472154, 21503131]
- Natural Science Foundation of Shanghai [13ZR1454400]
- International Cooperation Fund of Shanghai Science and Technology Committee [14520722200]
- Shanghai Municipal Science and Technology Commission [15dz1170100, 14520500200]
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Tin oxide (SnO2) is a kind of anode material with high theoretical capacity. However, the volume expansion and fast capability fading during cycling have prevented its practical application in lithium ion batteries. Herein, we report that the nanocomposite of fluorine-doped tin oxide (FTO) and reduced graphene oxide (RGO) is an ideal anode material with high capacity, high rate capability, and high stability. The FTO conductive nanocrystals were successfully anchored on RGO nanosheets from an FTO nanocrystals colloid and RGO suspension by hydrothermal treatment. As the anode material, the FTO/RGO composite showed high structural stability during the lithiation and delithiation processes. The conductive FTO nanocrystals favor the formation of stable and thin solid electrolyte interface films. Significantly, the FTO/RGO composite retains a discharge capacity as high as 1439 mAhg(-1) after 200 cycles at a current density of 100 mAg(-1). Moreover, its rate capacity displays 1148 mAhg(-1) at a current density of 1000 mAg(-1).
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