1. Bouquet-Like Mn2SnO4 Nanocomposite Engineered with Graphene Sheets as an Advanced Lithium-Ion Battery Anode
- Author
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Youlong Xu, Xiaofei Sun, Inam Ullah, Wasif ur Rehman, Yuan Zhang, and Long Li
- Subjects
Nanocomposite ,Materials science ,Nanostructure ,Graphene ,Tin dioxide ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Tin oxide ,01 natural sciences ,Lithium-ion battery ,0104 chemical sciences ,law.invention ,Anode ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,law ,General Materials Science ,0210 nano-technology - Abstract
Volume expansion is a major challenge associated with tin oxide (SnOx), which causes poor cyclability in lithium-ion battery anode. Bare tin dioxide (SnO2), tin dioxide with graphene sheets (SnO2@GS), and bouquet-like nanocomposite structure (Mn2SnO4@GS) are prepared via hydrothermal method followed by annealing. The obtained composite material presents a bouquet structure containing manganese and tin oxide nanoparticle network with graphene sheets. Benefiting from this porous nanostructure, in which graphene sheets provide high electronic pathways to enhance the electronic conductivity, uniformly distributed particles offer accelerated kinetic reaction with lithium ion and reduced volume deviation in the tin dioxide (SnO2) particle during charge–discharge testing. As a consequence, ternary composite Mn2SnO4@GS showed a high rate performance and outstanding cyclability of anode material for lithium-ion batteries. The electrode achieved a specific capacity of about 1070 mA h g–1 at a current density of 400...
- Published
- 2018
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