Preparation of Amorphous Carbon-coated Nano-scale SnO2 and its Performance for Anode Material of Lithium Ion Secondary Battery

Preparation of Amorphous Carbon-coated Nano-scale SnO2 and its Performance for Anode Material of Lithium Ion Secondary Battery

Amorphous carbon-coated nano-scale SnO2 powders were prepared by pyrolyzing the mixtures of starch and Sn (OH)4. The structure, morphology and properties of the sample were investigated by XRD, SEM, TEM, STEM-EDX and discharge-charge cycle. The results of XRD, SEM, TEM and STEM-EDX show that amorpho...

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Veröffentlicht in:Wu ji cai liao xue bao 2009-01, Vol.24 (1), p.147-151
Hauptverfasser: Yang, Tong-Huan, Guo, Yong-Lang, Zhou, Xue-Chou, Liu, Yong-Mei
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container_start_page 147
container_title Wu ji cai liao xue bao
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creator Yang, Tong-Huan
Guo, Yong-Lang
Zhou, Xue-Chou
Liu, Yong-Mei
description Amorphous carbon-coated nano-scale SnO2 powders were prepared by pyrolyzing the mixtures of starch and Sn (OH)4. The structure, morphology and properties of the sample were investigated by XRD, SEM, TEM, STEM-EDX and discharge-charge cycle. The results of XRD, SEM, TEM and STEM-EDX show that amorphous carbon of the sample is flaky and amorphous Carbon-coated SnO2 particles (20-50nm) are distributed in amorphous carbon uniformly. The results of discharge-charge cycle show that the different proportions between SnO2 and amorphous carbon lead to different discharge-charge performances. The specific capacity of the sample (SnO2: C =1: 1) reaches 404mAh/g which is even stable in twentieth cycle.
doi_str_mv 10.3724/SP.J.1077.2009.00147
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