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2009 , Vol. 24 >Issue 1: 147 - 151

DOI: https://doi.org/10.3724/SP.J.1077.2009.00147

研究论文

碳包覆纳米SnO2锂离子电池负极材料合成及其性能研究

  • 杨同欢 ,
  • 郭永榔 ,
  • 周学酬 ,
  • 刘永梅
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  • 福州大学化学化工学院，福州 350108

收稿日期: 2008-03-31

  修回日期: 2008-05-17

  网络出版日期: 2009-01-20

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

  • YANG Tong-Huan ,
  • GUO Yong-Lang ,
  • ZHOU Xue-Chou ,
  • LIU Yong-Mei
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  • College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108,China

Received date: 2008-03-31

  Revised date: 2008-05-17

  Online published: 2009-01-20

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摘要

采用热解Sn(OH)4和淀粉混合物制备碳包覆纳米SnO2的方法合成了无定形碳包覆纳米SnO2.采用XRD、SEM、TEM、STEM-EDX以及充放电测试等手段对其结构、形貌和性能进行表征.结果表明，样品材料中无定形碳呈薄片状，被包覆的纳米SnO2（20~50nm）均匀分布在片状无定形碳中.产物中SnO2与碳的不同比例影响了产物的性能，样品（SnO2∶C＝1∶1）首次循环的可逆比容量达到404mAh·g-1, 20次循环内无明显衰减.

关键词： 锂离子电池; 负极; SnO2; 无定形碳包覆

本文引用格式

杨同欢 , 郭永榔 , 周学酬 , 刘永梅 . 碳包覆纳米SnO2锂离子电池负极材料合成及其性能研究[J]. 无机材料学报, 2009 , 24(1) : 147 -151 . DOI: 10.3724/SP.J.1077.2009.00147

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

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