@article{ZHANG2022, 
author = {Meng ZHANG and Jin LI and Shaopeng SU and Dianping ZHANG},
title = {Preparation and Electrochemical Performance of Anode for High-Performance Silicon-Based Composite Lithium-Ion Battery},
year = {2022},
journal = {Journal of the Chinese Ceramic Society},
volume = {50},
number = {10},
pages = {2591-2598},
keywords = {silicon-based, composite anode, electrospinning, lithium-ion battery},
url = {https://www.sciopen.com/article/10.14062/j.issn.0454-5648.20220201},
doi = {10.14062/j.issn.0454-5648.20220201},
abstract = {Silicon has become the most promising anode material for lithium-ion batteries since its theoretical lithium intercalation capacity is as high as 4200 mA·h/g. However, its commercial application as a negative electrode for Li-ion batteries is limited due to the huge volume expansion (≥300%) during intercalation and delithiation. In this paper, a C@Si/C silicon-based composite anode was prepared by an electrospinning technique with carbon source precursor coating. The phase structure and microstructure of the material were characterized by X-ray diffraction and scanning electron microscopy. The change of the quality of the obtained material after polyvinypyrrolidone coating with temperature was investigated by thermo-gravimetric analysis. Graphite transformation degree of the silicon-based negative electrode material obtained after carbonization was determined by Raman spectroscopy. The prepared silicon-based anode materials were analyzed by galvanostatic charge–discharge, cyclic voltammetry and alternating current impedance spectroscopy. The results show that the electrochemical performance of the carbon-coated electrospun Si/C fibers is improved compared to the uncoated fibers. At a current density of 0.1 A/g, the first discharge capacity can reach 1401.4 mA·h/g, the first coulombic efficiency is as high as 70.22%, and the capacity remains at 582.6 mA·h/g after 100 cycles. The results of rate test show that after a large current density test of 1.0 A/g, C@Si/C silicon-based composite anode still has a reversible capacity of 622.2 mA·h/g at a current density of 0.1 A/g.}
}