Synthesis and electrochemical properties of SnO2-CuO nanocomposite powders
SnO2-CuO nanocomposite powders were prepared by chemical coprecipitation method using SnCl4·5H2O, NH3·H2O and Cu(NO3)2·3H2O as raw materials. The powders were characterized by thermogravimertric(TG) analysis and differential thermal analysis(DTA), X-ray diffraction(XRD), and scanning electron micros...
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Published in | Transactions of Nonferrous Metals Society of China Vol. 16; no. 4; pp. 791 - 794 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China%College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
01.08.2006
School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China%School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China |
Subjects | |
Online Access | Get full text |
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Summary: | SnO2-CuO nanocomposite powders were prepared by chemical coprecipitation method using SnCl4·5H2O, NH3·H2O and Cu(NO3)2·3H2O as raw materials. The powders were characterized by thermogravimertric(TG) analysis and differential thermal analysis(DTA), X-ray diffraction(XRD), and scanning electron microscope(SEM). The electrochemical properties of SnOE-CuO and undoped SnO2 powders as anode materials of lithium ion batteries were investigated comparatively by galvanostatic charge-discharge experiments and AC impedance. The results show that SnOE-CUO nanocomposite powders with the average particle size of 87 nm can be obtained by this method. The structure of SnO2 does not change with the introduction of CuO, but the average particle size of nano-SnO2 decreases. SnOE-CuO nanocomposite powders show a reversible capacity of 752 mA.h/g and better cycleability compared with nano-SnO2. The capacity retention rates after 60 cycles of nano-SnOE-CuO and SnO2 are 93.6% and 92.0% at the charge- discharge rate of 0.1 C, respectively, which suggests that the introduction of CuO into SnO2 can improve the cycleability of nano- SnO2. |
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Bibliography: | lithium ion batteries TM912 43-1239/TG chemical coprecipitation method electrochemical properties SnO2 SnO2; CuO; chemical coprecipitation method; lithium ion batteries; electrochemical properties CuO ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1003-6326 |
DOI: | 10.1016/S1003-6326(06)60327-0 |