Electrochemical Characteristics of Silicon-based Composites

Authors

Xin-xin XU, School of Chemistry of Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;
Jun YANG, School of Chemistry of Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;

Abstract

The nano-porous Si/G/C composite was obtained by two-step ball milling with SiO,A1 and graphite,along with HCl acid etching followed by carbon incorparation.This composite demonstrated the reversible capacity of 600 mAh/g with excellent cycling stability,but low initial cycle efficiency is low.A high-temperature treatment after ball-milling of SiO and A1 could promote the complete reduction of SiO.However,the crystalline structure of Al2O3 product changed from γ-phase to α-phase,which it can no longer be etched by HCl.The Si/Al2O3/G/C composite exhibited higher efficiency at the first cycle but relatively poorer cyclability.

Keywords

nano-porous Si, heat treatment, anode material, lithium ion battery

DOI Link

https://doi.org/10.61558/2993-074X.1953

Publication Date

2009-02-28

Online Available Date

2009-02-28

Revised Date

2009-02-28

Received Date

2009-02-28

Recommended Citation

Xin-xin XU, Jun YANG. Electrochemical Characteristics of Silicon-based Composites[J]. Journal of Electrochemistry, 2009 , 15(1): 47-51.
DOI: 10.61558/2993-074X.1953
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss1/12