Graphene‐Based Mesoporous SnO₂ with Enhanced Electrochemical Performance for Lithium‐Ion Batteries

Abstract

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 benefi ts 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 highperformance electrodes for lithium-ion batteries.

Porous Graphene Materials for Energy Storage and Conversion Applications

“…The adsorption data have indicated a high specific area of 980 m 2 /g. In another method, mesostructured graphene-based SnO 2 composite is prepared by hydrothermally treating a suspension of GO, CTAB, and SnCl 4 [31]. Two-dimensional ordered mesoporous carbon nanosheets have been prepared by low molecular weight phenolic resols on graphene sheets using a triblock copolymer called Pluronic F-127 as the structure-directing agent [32].…”

Hierarchical structured graphene/metal oxide/porous carbon composites as anode materials for lithium-ion batteries

“…Accordingly, various graphene-based metal oxides are fabricated as a new class of advanced electrode materials with enhanced cycle and rate performances [20][21][22][23]. In the present work, CeO2…”

NiO hollow microspheres interconnected by carbon nanotubes as an anode for lithium ion batteries

“…To further improve the rate performance of MOs, much effort has been made to accommodate the active materials with porous conductive scaffolds to form the nanocomposites such as carbon nanotubes [11][12][13][14][15][16][17][18][19], graphene [20][21][22][23][24] and carbon nanofibers [25][26][27][28][29] because they could provide long-range conductivity, well controlled interface between MOs and conducting carbons, and more robust network structure. In particular, CNTs is a good candidate for a support matrix in novel anode material for enhanced lithium storage due to its high electrical conductivity, rich porosity and high tensile strength [30,31].…”