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

doi:10.3724/SP.J.1077.2009.00147

Abstract

Abstract: 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.

Key words: lithium-ion battery, anode；SnO₂, amorphous carbon-coated

CLC Number:

TM911

YANG Tong-Huan,GUO Yong-Lang,ZHOU Xue-Chou,LIU Yong-Mei. Preparation of Amorphous Carbon-coated Nano-scale SnO₂ and its Performance for AnodeMaterial of Lithium Ion Secondary Battery[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00147.

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

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