Amorphous SnO2/graphene aerogel nanocomposites harvesting superior anode performance for lithium energy storage

Linlin Fan, Xifei Li, Bo Yan, Xiaojia Li, Dongbin Xiong, Dejun Li, Hui Xu, Xianfa Zhang and Xueliang Sun

Applied Energy, 2016, vol. 175, issue C, 529-535

Abstract: The Sn-based materialshave been hindered from practical use for lithium ion batteries due to the inherent volume change leading to poor cycling performance. To mitigate this challenge, in this study, amorphous SnO2/graphene aerogel nanocomposites are fabricated via asimple hydrothermal approach.The amorphous nature of SnO2 is clearly determined in detail by transmission electron microscopy, aberration-corrected scanning transmission electron microscopy, and X-ray diffraction measurement. The as-prepared material shows satisfying reversible capacity and significant cyclic stability. For instance,it delivers an excellent discharge capacity of 700.1mAhg−1 in 80th cycle at a current density of 100mAg−1, in accordance with a high retention capacity of 97.6% compared to that of the sixth cycles, which is much better than crystalline SnO2/graphene aerogel. The enhanced electrochemical performance can be ascribed to the intrinsic isotropic nature, smaller size, and high electrochemical reaction kinetics of amorphous SnO2, together with the graphene aerogels matrix. Therefore, this study may provide an effortless, economic, and environmental friendly strategy to fabricate high volume change electrode materials for lithium ion batteries.

Keywords: Lithium ion batteries; SnO2; Amorphous; Crystalline; Cycling performance (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2016.02.094

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