A self-encapsulated porous Sb–C nanocomposite anode with excellent Na-ion storage performance. Issue 41 (11th October 2018)

• Record Type: Journal Article
• Authors: Pham, Xuan-Manh; Ngo, Duc Tung; Le, Hang T. T.; Didwal, Pravin N.; Verma, Rakesh; Min, Chan-Woo; Park, Choong-Nyeon; Park, Chan-Jin
• Is Part Of: Nanoscale. Volume 10:Issue 41(2018)
• Page Start: 19399
• Page End: 19408
• Publication Date: 2018-10-11
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr06182c
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : 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 N2 atmosphere. Abstract : 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 N2 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 Na3 V2 (PO4 )3 cathode exhibited good specific capacity and cyclability, making the Sb–C composite a promising anode material for high-performance SIBs.