Easy preparation of SnO₂@carbon composite nanofibers with improved lithium ion storage properties

Abstract

SnO2@carbon nanofibers were synthesized by a combination of electrospinning and subsequent thermal treatments in air and then in argon to demonstrate their potential use as an anode material in lithium ion battery applications. The as-prepared SnO2@carbon nanofibers consist of SnO2 anoparticles/nanocrystals encapsulated in a carbon matrix and contain many mesopores. Because of the charge pathways, both for the electrons and the lithium ions, and the buffering function provided by both the carbon encapsulating the SnO2 nanoparticles and the mesopores, which tends to alleviate the volumetric effects during the charge/ discharge cycles, the nanofibers display a greatly improved reversible capacity of 420 mAh/g after 100 cycles at a constant current of 100 mA/g, and a sharply enhanced reversible capacity at higher rates (0.5, 1, and 2 C) compared with pure SnO2 nanofibers, which makes it a promising anode material for lithium ion batteries. KeywordsEasy, preparation, SnO2, carbon, composite, nanofibers, improved, lithium, ion, storage, properties Disciplines Arts and Humanities | Life Sciences | Medicine and Health Sciences | Social and Behavioral Sciences Publication DetailsYang, Z., Du, G., Guo, Z., Yu, X., Chen, Z., Zhang, P., Chen, G. & Liu, H. K. (2010) SnO 2 @carbon nanofibers were synthesized by a combination of electrospinning and subsequent thermal treatments in air and then in argon to demonstrate their potential use as an anode material in lithium ion battery applications. The as-prepared SnO 2 @carbon nanofibers consist of SnO 2 nanoparticles/nanocrystals encapsulated in a carbon matrix and contain many mesopores. Because of the charge pathways, both for the electrons and the lithium ions, and the buffering function provided by both the carbon encapsulating the SnO 2 nanoparticles and the mesopores, which tends to alleviate the volumetric effects during the charge/discharge cycles, the nanofibers display a greatly improved reversible capacity of 420 mAh/g after 100 cycles at a constant current of 100 mA/g, and a sharply enhanced reversible capacity at higher rates (0.5, 1, and 2 C) compared with pure SnO 2 nanofibers, which makes it a promising anode material for lithium ion batteries.

Synthesis of uniform TiO2@carbon composite nanofibers as anode for lithium ion batteries with enhanced electrochemical performance

“…For spinning, the set-up was similar to that described previously. 6,27,[29][30][31][32][33] Typically, the collector was placed 9.5 cm from the spinneret to collect the nanofibers. A high voltage of 13.3 kV was applied between the spinneret and the collector by a directcurrent power supply (DW-P303-5ACCD, Tianjin Dongwen High Voltage Power Supply Co., China.).…”

A biocomposite of collagen nanofibers and nanohydroxyapatite for bone regeneration

“…Another way to overcome this problem is the use of organic toxic reagents, mainly highly volatile fluoroalcohols such as 1,1,1,3,3,3-hexafluoro-2-propanol (HFP) and 2,2,2-trifluoroethanol (TFE). However, these solvents are highly toxic and partially denature the native structure of collagen through the disruption of its characteristic triple-helical structure, decrease its denaturation temperature and result in a significant amount of collagen lost during electrospinning [25,26]. Increasing efforts towards applying non-toxic aqueous systems, such as PBS/ethanol or acetic acid, for medical applications have started to emerge [27][28][29][30].…”

High rate capability and cyclic stability of hierarchically porous Tin oxide (IV)–carbon nanofibers as anode in lithium ion batteries

“…Pure SnO 2 nanofibers show capacity of *780 mAh/g at fiftieth cycle, however, only at a low discharge rate of 0.2C (Hwang et al 2014). A list of literature reports on the synthesis of SnO 2 and SnO 2 -carbon nanofibers employing the electrospinning technique and their electrochemical performance are provided in Table 1 and compared with the present study (Bonino et al 2011;Fu et al 2014;Hwang et al 2014;Jung and Lee 2011;Kim et al 2014;Kong et al 2012;Xia et al 2012;Yang et al 2015;Yang and Lu 2014;Yang et al 2010;Zhou et al 2014). In the present investigation, a facile (Wang et al 2016), inexpensive route for the Synthesis of porous SnO 2 -carbon composite nanofibers with small amount of carbon using electrospinning technique has been developed.…”

“…In this direction, Yang et al have reported that size of SnO 2 nanoparticles play vital role in controlling the electrochemical performance (Yang et al 2010). Park et al demonstrated that morphology also play significant role (Park et al 2008) in electrochemical performance of the electrode.…”