Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 4, Issue 11, Pages 5742-5748Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am301962d
Keywords
flexible; free-standing; GSP; Li-ion battery; cycling stability; capacity
Funding
- National Natural Science Foundation of China [11079002, 51272012]
- Specialized Research Fund for the Doctoral Program of Higher Education [20091102110035, 20111102130006]
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A flexible free-standing graphene/SnO2 nanocomposites paper (GSP) was prepared by coupling a simple filtration method and a thermal reduction together for the first time. Compared with the pure SnO2 nanoparticles, the GSP exhibited a better cycling stability, because the graphene with high mechanical strength and elasticity can work as a buffer to prevent the volume expansion and contraction of SnO2 nanoparticles during the Li+ insertion/extraction process. Meanwhile, compared with single graphene paper, the GSP showed a higher capacity because of the hybridizing with higher capacity SnO2 nanoparticles. The excellent electrochemical performance of the GSP as an anode material in Li-ion battery was obtained. The as-prepared GSP shows a great potential for flexible Li-ion batteries.
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