Facile preparation of SnO2/graphene nanosheet composite with excellent electrochemical performances for lithium storage. (23rd February 2017)

• Record Type: Journal Article
• Authors: Ye, Jiajia; An, Jisong; Liu, Binbin; Xu, Caixia
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 8(2017)
• Page Start: 5199
• Page End: 5206
• Publication Date: 2017-02-23
• Subjects: Lithium ion batteries -- SnO2 -- Graphene -- Anode -- Composite; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.01.081
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: SnO2 /graphene nanosheet composite is fabricated by a simple hydrothermal method, characterized by SnO2 nanoparticles as small as 4 nm anchored on the reduced graphene oxide nanosheets byl -ascorbic acid (SnO2 /L-RGO). The as-made SnO2 /L-RGO composite exhibits excellent lithium storage performance with the high initial discharge and charge capacities around 2004.9 and 1262.1 mA h g −1 at the current density of 100 mA g −1 . The SnO2 /L-RGO electrode also exhibits high reversible capacity with the 660.8 mA h g −1 remained after 300 cycles at the high current density of 500 mA g −1 . Moreover, the SnO2 /L-RGO electrode shows exceptional rate capability. The experimental results indicate that the combination of reduced graphene oxide by L-AA significantly boosts the cycling stability and rate capacity performance of SnO2 by effectively accommodating the large volume variation as well preventing the electrode from pulverization. Highlights: SnO2 /L-RGO composite is successfully fabricated by a facile hydrothermal method. SnO2 /L-RGO is characterized by SnO2 nanoparticles anchored on graphene nanosheets. SnO2 /L-RGO shows high cycling performance at the 200 and 500 mA g −1, respectively. SnO2 /L-RGO exhibits the high reversible capacity and exceptional rate capability.