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Acta Physico-Chimica Sinica  2006, Vol. 22 Issue (11): 1336-1341    DOI: 10.3866/PKU.WHXB20061107
Article     
Electrochemical Properties Study of Sb2O3 doped Li4Ti5O12
XU Yu-Hong;ZHANG Bao-Hong;GONG GUI-Ying;MA Ping
Chemical Engineering School of Harbin Engineering University, Harbin 150001, P. R. China
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Abstract  Li4Ti5O12 was modified by doped Sb2O3. The samples were characterized by galvanostatic charge-discharge,cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS). The results indicated that the initial capacity was as high as 595.84mAhog-1 and the colombic efficiency was 45.7%when Ti:Sb=4:1. The capacity was still 249.57mAhog-1 after 20 charge-discharge cycles. The possible reaction mechanism was proposed and used to explained the losses of capacity. EIS results showed that Sb-doping could suppressed the electrochemical reaction resistant.

Key wordsLithium ion battery      Li4Ti5O12      Doping      anode material     
Received: 15 March 2006      Published: 06 November 2006
Corresponding Authors: ZHANG Bao-Hong     E-mail: x8y1h73@163.com
Cite this article:

XU Yu-Hong;ZHANG Bao-Hong;GONG GUI-Ying;MA Ping . Electrochemical Properties Study of Sb2O3 doped Li4Ti5O12. Acta Physico-Chimica Sinica, 2006, 22(11): 1336-1341.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20061107     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2006/V22/I11/1336

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