期刊
NANOSCALE
卷 10, 期 41, 页码 19399-19408出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr06182c
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资金
- National Research Foundation of Korea (NRF) [2017H1D5A1044874, 2018R1A5A1025224]
- EES Technology Development Program through KETEP, Korea [20172420108730]
In this study, a self-encapsulated Sb-C nanocomposite as an anode material for sodium-ion batteries (SIBs) was successfully synthesised using an SbCl3-citrate complex precursor, followed by a drying and calcination process under an inert N-2 atmosphere. When the molar ratio of SbCl3 to citric acid was varied from 1:1 to 1:4, the Sb-C nanocomposite with a molar ratio of 1:3 (Sb-C3) exhibited the highest specific surface area (265.97 m(2) g(-1)) and pore volume (0.158 cm(3) g(-1)). Furthermore, the Sb-C3 electrode showed a high reversible capacity of 559 mA h g(-1) at a rate of C/10 and maintained a high reversible capacity of 430 mA h g(-1) even after 195 cycles at a rate of 1C. The Sb-C3 electrode exhibited an excellent rate capability of 603, 445, and 357 mA h g(-1) at the rates of C/20, 5C, and 10C, respectively. Furthermore, a full cell composed of an Sb-C3 anode and a Na3V2(PO4)(3) cathode exhibited good specific capacity and cyclability, making the Sb-C composite a promising anode material for high-performance SIBs.
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