Electrospun Fe3O4-Sn@Carbon Nanofibers Composite as Efficient Anode Material for Li-Ion Batteries.

Hong Wang,Yuejin Ma,Wenming Zhang

doi:10.3390/nano11092203

Hong Wang, Yuejin Ma + Show 1 more

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https://doi.org/10.3390/nano11092203

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Journal: Nanomaterials	Publication Date: Aug 27, 2021
Citations: 2	License type: CC BY 4.0

Affiliation: Hebei Agricultural University, Hebei University

Abstract

Nanoscale Fe3O4-Sn@CNFs was prepared by loading Fe3O4 and Sn nanoparticles onto CNFs synthesized via electrostatic spinning and subsequent thermal treatment by solvothermal reaction, and were used as anode materials for lithium-ion batteries. The prepared anode delivers an excellent reversible specific capacity of 1120 mAh·g−1 at a current density of 100 mA·g−1 at the 50th cycle. The recovery rate of the specific capacity (99%) proves the better cycle stability. Fe3O4 nanoparticles are uniformly dispersed on the surface of nanofibers with high density, effectively increasing the electrochemical reaction sites, and improving the electrochemical performance of the active material. The rate and cycling performance of the fabricated electrodes were significantly improved because of Sn and Fe3O4 loading on CNFs with high electrical conductivity and elasticity.

Highlights

With the development of the social economy, the imbalance of energy supply and demand has become prominent
The novel Fe3 O4 -Sn@Carbon nanofibers (CNFs) composite nanomaterial was fabricated via a simple electrospinning and subsequent calcination process combined with a hydrothermal method
Electrospinning is a convenient and important technique to prepare continuous one-dimensional carbon nanofibers [56,57,58,59] that were used in this study to synthesize Sn loading on carbon nanofibers (Sn@CNFs), which were coated with Fe3 O4 by a solvothermal method

Summary

Introduction

With the development of the social economy, the imbalance of energy supply and demand has become prominent. Finding alternative anode materials with better electrochemical performance, such as silicon-based composites [7,8,9], metal intermetallic alloys [10,11,12,13,14], and transition metal oxides [15,16,17], has become increasingly important [18,19,20]. Among these anode materials, cobaltous oxide and tin are very promising candidates to replace graphite, and have attracted the attention of many scholars

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Results

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