Binder-free multilayered SnO2/graphene on Ni foam as a high-performance lithium ion batteries anode |
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Authors: | Liang Zhan Xiaosong Zhou Jin Luo Xiaomei Ning |
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Affiliation: | Department of Chemistry and chemical Engineering, Lingnan Normal University, Development Center for New Materials Engineering & Technology in Universities of Guangdong, Zhanjiang 524048, China |
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Abstract: | The reasonable structure construction of electrode materials with superior performance is desired for the new generation lithium ion batteries (LIBs). Herein, binder-free multilayered SnO2/graphene (GN) on Ni foam was fabricated via a dip coating method. SnO2 nanoparticles and GN were alternatively coated on Ni foam to form a sandwich-like structure. The wrapping of GN can raise the conductivity and keep the structural integrality of the binder-free material, preventing structure collapse arised from the volume expansion of SnO2. Benefiting from the porous Ni foam framework and sandwich-like structure, the SnO2/GN composite exhibited good rate performance and excellent cycle stability. High capacities of 708 and 609?mAh?g?1 were achieved at rates of 1 and 2?A?g?1. Besides, the SnO2/GN electrode delivered a high capacity of 757?mAh?g?1 after 500 cycles at 1?A?g?1. |
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Keywords: | Graphene Binder-free Ni foam Lithium ion batteries |
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