@article{WANG2023, 
author = {Ming WANG and Yonghao ZENG and Yue HE and Pengfei FANG and Xiaoliang WANG and Ding SHEN},
title = {Preparation and Lithium Storage Properties of Silicon/Reduced Graphene Oxide Nanocomposites},
year = {2023},
journal = {Journal of the Chinese Ceramic Society},
volume = {51},
number = {7},
pages = {1689-1696},
keywords = {silicon/reduced graphene oxide nanocomposite, three-dimensional conductive network structure, lithium storage performance, anode material},
url = {https://www.sciopen.com/article/10.14062/j.issn.0454-5648.20221016},
doi = {10.14062/j.issn.0454-5648.20221016},
abstract = {Silicon has attracted wide attention due to its high theoretical specific capacity. However, the huge volume change and poor reaction kinetics in the lithiation process lead to a serious deterioration of its structure, a continuous capacity attenuation and a poor magnification performance, thus restricting its practical application. To solve these problems, silicon/reduced graphene oxide (Si/rGO) nanocomposites with a three-dimensional cage-like conductive structure were designed by an in-situ electrostatic self-assembly and hydrothermal reduction method with commercial Si nano-particles with the size of 60 nm and natural flake graphite. The lithium ion storage performance and energy storage mechanism of Si/rGO nanocomposite were investigated. The results show that Si nano-particles are uniformly encapsulated into a three-dimensional cage-like conductive network structure of rGO, effectively limiting the volume expansion of nano-Si particles and providing the more ion transport channels in the process of lithium ion intercalation/detachment. The specific capacity of Si/rGO nanocomposites is 1246 mA·h/g at 0.1 A/g. The Coulomb efficiency is 98.2% and the capacity retention is 95.5% from fifth cycle, indicating that the nanocomposite has a fast stability behavior. The reversible capacity remains 852 mA·h/g, the Coulomb efficiency is 99.9%, and the capacity retention is 68.4% after 200 cycles.}
}