期刊
APPLIED SURFACE SCIENCE
卷 484, 期 -, 页码 646-654出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2019.04.144
关键词
Li-ion batteries; Na-ion batteries; Anode; SnO2; Reaction kinetics
类别
资金
- National Key R&D Program of China [SQ2017YFGH001474]
- Open Project Program of Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education of China [2019005]
- National Natural Science Foundation of China [21521092]
- Major Scientific and Technological Developing Project of Changchun City [17SS013]
- Scientific and Technological Developing Project of Jilin Province [20180201098GX]
SnO2 is regarded to be promising for both Li-ion and Na-ion batteries. Thus, it is imperative to fabricate SnO2-based anode with improved lithiation reaction kinetics using simple but effective method. Herein, we develop a one-pot hydrothermal route to fabricate two-dimensional SnO2 nanosheets and the graphene supported SnO2 nanosheet composite with decreased SnO2 nanosheet of about 5-10 nm. The ultrathin nanosheet structure anchored on graphene supporting can effectively accelerate the conversion/alloying reaction. Electrochemical researches demonstrate that the reaction kinetics of the lithiation/delithiation reaction can be significantly enhanced by the graphene supported SnO2 nanosheets. As a result, a capacity of 817.2 mAh g(-1) after 100 cycles in the potential window of 0.01 to 3 V are achieved at 500 mA g(-1). The full cell performance and the sodium storage performance are both demonstrated to be good. These promising results suggest that such strategy to fabricate two-dimensional SnO2-based anode is of great interest for next-generation Li-ion and Na-ion batteries.
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