期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 802, 期 -, 页码 269-275出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.06.165
关键词
SnS2 nano sheet; Carbon nanofiber; Sodium ion batteries; Pseudocapacitance
资金
- Foundation of Graduate Innovation Center in Nanjing University of Aeronautics and Astronautics Open Fund of Key Laboratory of Materials Preparation [kfjj20180617]
- Fundamental Research Funds for the Central Universities, Protection for Harsh Environment (Nanjing University of Aeronautics and Astronautics), Ministry of Industry and Information Technology [1006-56XCA1815901r]
- Priority Academic Program Development (PAPD) of the Jiangsu Higher Education Institutions
Metal dichalcognide SnS2 have been demonstrated a potential candidate for sodium-ion batteries (SIBs) anode due to its high theoretical specific capacity and large interlayer spacing. However, the issues of sluggish kinetics and large volume change associated with the conversion and alloying reaction need to be addressed prior to the practical application. Herein, mesoporous composite of SnS2 nanosheets crosslinked by bacterial cellulose-derived carbon nanofibers (SnS2/BC-CNIFs) has been fabricated by hydrothermal method, which displayed superior rate capability and cycling stability. The nanocomposite of SnS2/BC-CNIFs-5 (Specific surface is 144.7 m(2) g(-1)) delivered a high specific capacity of 408 mAh g(-1) at 50 mA g(-1) after 100 cycles and 196.4 mAh g(-1) at a high rate of 2 A g(-1). The enhanced Na storage properties of SnS2/BC-CNIFs may due to the rational design of SnS2 nanosheets interconnected by conductive carbon nanofibers, which facilitated the ion and electron transport throughout the electrode. (C) 2019 Elsevier B.V. All rights reserved.
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