Ultrafine SnO{sub 2} nanocrystals anchored graphene composites as anode material for lithium-ion batteries

Journal Article · Sat Aug 15 04:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.03.041· OSTI ID:22475839

Zhang, Jun; Chang, Ling; Wang, Fengxian; Xie, Dong; Su, Qingmei; Du, Gaohui

Highlights: • Ultrafine SnO{sub 2}@graphene composite is synthesized by a simple hydrothermal method. • SnO{sub 2} nanocrystals with size of ∼5 nm are distributed on the graphene sheets uniformly. • A reversible capacity of 808 mAh g{sup −1} is retained after 100 cycles at 200 mA g{sup −1}. • The capacity recovers to 1290 mAh g{sup −1} after being cycled at various rates for 60 cycles. - Abstract: Ultrafine tin dioxide (SnO{sub 2}) nanocrystals anchored graphene composite is synthesized by a simple hydrothermal method. Well-defined SnO{sub 2} nanocrystals with size of ∼5 nm are uniformly anchored on the graphene sheets. The two-dimensional nanostructure inherits the advantages of graphene, which possesses high electrical conductivity and large surface area. Furthermore, the ultrafine SnO{sub 2} nanocrystals anchoring on graphene sheets facilitate fast ion transportation and prevent aggregation. As a result, the produced nanocomposite exhibits an excellent cycling stability and rate capability for lithium storage (808 mAh g{sup −1} after 100 cycles at 200 mA g{sup −1}, 1290 mAh g{sup −1} at the current of 50 mA g{sup −1} after being cycled at various current densities for 60 cycles)

• OSTI ID: 22475839
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 68; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AGGLOMERATION
ANCHORS
CAPACITY
CURRENT DENSITY
CURRENTS
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
ELECTROCHEMISTRY
FASTENING
GRAPHENE
HYDROTHERMAL SYNTHESIS
LITHIUM IONS
NANOSTRUCTURES
STABILITY
SURFACE AREA
TIN OXIDES
TWO-DIMENSIONAL CALCULATIONS