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Graphene‐Based Mesoporous SnO 2 with Enhanced Electrochemical Performance for Lithium‐Ion Batteries
Author(s) -
Yang Sheng,
Yue Wenbo,
Zhu Jia,
Ren Yu,
Yang Xiaojing
Publication year - 2013
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201203286
Subject(s) - graphene , materials science , mesoporous material , oxide , lithium (medication) , electrochemistry , nanotechnology , composite number , graphene foam , graphene oxide paper , electrode , nanoparticle , chemical engineering , mesoporous organosilica , composite material , mesoporous silica , catalysis , organic chemistry , medicine , chemistry , endocrinology , engineering , metallurgy
Graphene‐based metal oxides generally show outstanding electrochemical performance due to the superior properties of graphene. However, the aggregation of active metal oxide nanoparticles on the graphene surface may result in a capacity fading and poor cycle performance. Here, a mesostructured graphene‐based SnO 2 composite is prepared through in situ growth of SnO 2 particles on the graphene surface using cetyltrimethylammonium bromide as the structure‐directing agent. This novel mesoporous composite inherits the advantages of graphene nanosheets and mesoporous materials and exhibits higher reversible capacity, better cycle performance, and better rate capability compared to pure mesoporous SnO 2 and graphene‐based nonporous SnO 2 . It is concluded that the synergetic effect between graphene and mesostructure benefits the improvement of the electrochemical properties of the hybrid composites. This facile method may offer an attractive alternative approach for preparation of the graphene‐based mesoporous composites as high‐ performance electrodes for lithium‐ion batteries.