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Enhancing the Lithium Storage Performance of Graphene/SnO 2 Nanorods by a Carbon-Riveting Strategy.
ChemSusChem 2018 April 26
Graphene/metal oxide (MO) nanocomposites hold great promise for application as anodes in lithium-ion batteries (LIBs). However, the restacking of graphene during subsequent processing remains a challenge to overcome for enhanced lithium storage properties. Herein, the fabrication of sandwich-architecture carbon-riveted graphene/SnO2 nanorods, in which the SnO2 nanorods are confined in the nanospaces formed by the carbon layers on graphene, by a two-step hydrothermal process followed by thermal treatment, is reported. Electrochemical tests show that the carbon-riveted nanolayers significantly improve the lithium storage performance of graphene/SnO2 . The nanocomposite displays a high reversible capacity of 815 mAh g-1 after 150 cycles at 100 mA g-1 and high cycling stability at 1000 mA g-1 . This work provides an efficient way to manipulate graphene/MO-based nanocomposites for LIBs with improved performance.
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