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
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
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