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;Follow

Corresponding Author

Jun YANG(yangj723@sjtu.edu.cn)

Abstract

The nano-porous Si/G/C composite was obtained by two-step ball milling with SiO, Al 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

2008-11-20

Received Date

2008-10-20

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