Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 15: Energy materials (other than photovoltaics)

HL 15.7: Vortrag

Dienstag, 2. April 2019, 11:00–11:15, H33

Sn nanoparticles@nitrogen-doped carbon nanofiber composites as high-performance anodes for sodium-ion batteries — •Mo Sha, Xuhui Sun, and Yong Lei — Am Ehrenberg 3, 98693 Ilmenau

Recently, sodium-ion batteries (SIBs) have attracted increasing attention as an important supplement and/or alternative to lithium ion batteries due to the abundance of sodium resources and its much lower cost. A critical issue in current research is the development of earth-abundant and high-performance electrode materials for the extensive applications of SIBs. Sn-based nanocomposites have been identified as one of the promising anodes for SIBs. In this study, the composites of Sn nanoparticles anchored on nitrogen-doped carbon nanofiber (Sn@NCNFs) have been synthesized by an electrostatic spinning technique and used as anodes for SIBs. Morphological and structural characterizations indicate that the Sn nanoparticles anchored uniformly on the surface of NCNFs. The corresponding specific capacity can reach over 600 mA h/g at 0.1 C after 200 cycles. Additionally, these Sn@NCNFs also show excellent high-rate cycling performance and maintain a capacity of up to 390 mA h/g even at an extremely high rate of 1 C for over 1000 cycles. The results demonstrate that this Sn@NCNFs composite is a promising anode material with good reversible capacity and cycling performance for SIBs.